Micro/Junior/Pro PL7 Micro PLC Functions Upcounting. TLX DS 37 PL7 40E engv4

Transcription

1 Micro/Junior/Pro PL7 Micro PLC Functions Upcounting TLX DS 37 PL7 40E engv

2 2

3 Related Documentation Related Documentation Introduction This manual is in 2 volumes: l Volume 1 l Common application specific functions l Discrete function l Setting up AS-i l Operator Dialogue function l Analog mod. l Process Control l Volume 2 l Counting function TLX DS 37 PL7 40E

4 Related Documentation 4 TLX DS 37 PL7 40E

5 Table of Contents About the book Chapter 1 Introducing the Counting application specific function General introduction to the counting function Chapter 2 Introducing the Micro TSX counting solutions operation...13 Introduction General points on TSX counting solutions Introduction to counting solutions for the Micro TSX Main functions of discrete and integral counting on the Micro TSX Introduction Introducing discrete and integral counting on the Micro TSX Introducing a counting or down counting channel Counting or down counting operations Introducing a counting/down counting channel Counting/down counting operation Main functions of the TSX CTZ 1A, TSX CTZ 2A and TSX CTZ 2AA modules. 26 Introduction Introduction of TSX CTZ 1A, 2A and 2AA data modules Introducing a counting or down counting channel Counting or down counting operations Introducing a counting/down counting channel (TSX CTZ1A, 2A and 2AA) Counting/down counting operation Chapter 3 Description of the Micro TSX counting functions Introduction Introducing the counting functions Introducing input configurations and functions associated with counting Description of counting input interfaces on the Micro TSX Description of counting input interfaces Description of the counting capture function on the Micro TSX Capture function for data module counters Description of the preset and reset to zero counting functions on the Micro TSX 45 Introduction Introduction to the preset or reset to zero function

6 Pre-setting on down counting (TSX CTZ 1A, 2A and 2AA) Resetting to zero in counting Presetting in up/down counting Description of the counting comparison function on the Micro TSX Introduction Introducing the comparison function Comparison in up or down counting Comparison in up/down counting mode Description of counter outputs associated to Micro TSX counting solutions Introduction Introducing counter outputs for storing (TSX CTZ1A, 2A and 2AA) Counter outputs in down counting mode (TSX CTZ1A, 2A and 2AA) Counter outputs in counting mode (TSX CTZ1A, 2A and 2AA) Counter outputs in up/down counting mode (TSX CTZ1A, 2A and 2AA) How to deal with counting solution faults in the Micro TSX Introduction Introducing channel and rollover fault processes How to deal with an invalid reading Chapter 4 Configuring counting solutions on the Micro TSX Introduction Description of screen configuration for a counting module How to access configuration screens for TSX Micro counting solutions How to configure counting inputs How to configure preset or reset to zero in a counting function How to configure the capture of a counting register How to configure the operations setting to zero or crossing the set point How to configure event processing Chapter 5 Adjusting counting solutions on the Micro TSX Introduction Description of the adjustment screen for a Micro TSX counting solution How to adjust the preset value How to adjust threshold and set point values How to adjust counter output change of status conditions Chapter 6 Debugging counting solutions on the Micro TSX Introduction Introducing debugging screens Description of the extended debugging screen Description of the reduced debugging screen How to use value or parameter windows How to use the lights and buttons Chapter 7 Diagnosing counting solutions on the Micro TSX Introduction

7 Viewing fault diagnostics Lists of fault diagnostics Chapter 8 Software implementation Introduction Operating modes for Micro TSX counting solutions How TSX Micro counting solutions behave in different operating modes Setting up an event process Introduction Introducing the event process How to program an event process Chapter 9 Counting function language objects Introduction Introducing language objects for application specific counting Default exchange language objects linked to the application specific counting function Details of default exchange objects Language objects for explicit exchange associated with the application specific counting function Details of explicit exchange objects Explicit object exchange and report management Chapter 10 Counting application example Introduction Introduction to grouping in lots (example) Configuring the PLC Program: preliminary processing Program: sequential processing Program: step 0 of sequential processing Program: step 2 of sequential processing Program: subsequent processing Program: event processing Index

8 8

9 About the book At a Glance Document Scope Validity Note This manual deals with implementing Micro TSX counting function software using PL7 software. The updating of this publication takes into account the functions of PL7V4. Nevertheless it can be used to set up earlier PL7 versions. Revision History Rev. No. Changes 1 Version 1 Related Documents Title of Documentation Hardware installation manual Reference Number TSX DM 37 33E Product Related Warnings User Comments We welcome your comments about this document. You can reach us by at TECHCOMM@modicon.com TLX DS 37 PL7 40E

10 About the book 10 TLX DS 37 PL7 40E

11 Introducing the Counting application specific function 1 General introduction to the counting function Introduction The counting function of the Micro TSX is used to carry out fast counting using the CPU, data modules, PL7 screens and specialized language objects. The general operation is described in the section Introducing the Micro TSX counting solutions operation, p. 13 and details of their functions are described in the section Description of the Micro TSX counting functions, p. 35. To set up counting the physical context in which it will be carried out must be defined (rack, power supply, processor, modules or devices,...) then its software must be installed. This second aspect is carried out by the different PL7 editors: l either offline, l or on-line. TLX DS 37 PL7 40E

12 General introduction Set up principle The table below shows the different set up phases for the application specific Counting function. Mode Stage Description Offline Declaring a module or a function Choice: l of geographical position: module slot, l module type. Configuring the module or processor channels (See Configuring counting solutions on the Micro TSX, p. 77) Entering the configuration parameters. Confirming the configuration parameters Global application confirmation Confirmation at module level (or CPU for channels 11 and 12). Confirmation at application level. Offline or on-line Symbolization Symbolizing the variables associated with the application specific function. Programming (See Software implementation, p. 111) Programming the functions that the specific function must carry out using: word and bit objects associated with the module and event processing, On-line Transfer Transferring the application to the PLC. Debugging (See Debugging counting solutions on the Micro TSX, p. 95) and Diagnostics (See Diagnosing counting solutions on the Micro TSX, p. 105) Debugging the application using: l debugging help screens to control inputs and outputs, to modify the thresholds and set point values, to trigger events and carry out initializations, l diagnostic screens are used to identify faults. Offline or on-line Documentation Printing different information relating to the application. Note: The order defined above is given as an indication. The PL7 software can use editors interactively in any order you wish (however you cannot use the data or program editors without configuring the counting channels first). 12 TLX DS 37 PL7 40E

13 Introducing the Micro TSX counting solutions operation 2 Introduction Aim of this chapter What s in this Chapter? This chapter describes the operating principles for the various Micro TSX counting solutions: l 500 Hz counting on discrete inputs, l 10 KHz integrated counting, l counting on TSX CTZ 1A, 2A and 2AA modules. This Chapter contains the following Sections: Section Topic Page 2.1 General points on TSX counting solutions Main functions of discrete and integral counting on the Micro TSX Main functions of the TSX CTZ 1A, TSX CTZ 2A and TSX CTZ 2AA modules 26 TLX DS 37 PL7 40E

14 Micro TSX counting operation 14 TLX DS 37 PL7 40E

15 Micro TSX counting operation 2.1 General points on TSX counting solutions Introduction to counting solutions for the Micro TSX At a Glance Main characteristics Micro TSXs support three distinct counting solutions: l counting by discrete inputs of the discrete module in the first slot, l integral counting, l specialized counting by modules TSX CTZ1A, TSX CTZ2A and TSX CTZ2AA. These modules are made up of a range of varied characteristics adapted for the different situations met in industrial checks. The main characteristics of these modules are as follows: Type Functions Number of channels Discrete modules Integral counting TSX CTZ 1A TSX CTZ 2A TSX CTZ 2AA Counting, down counting, counting/down counting. Counting, down counting, counting/down counting. Counting, down counting, counting/down counting. Counting, down counting, counting/down counting. Counting, down counting, counting/down counting. 2, channels 0 and 1 2, channels 11 and 12 Number of physical outputs per channel , channel 0 1 or 2 (according to function) 2, channels 0 and 1 2, channels 0 and 1 1 or 2 (according to function) 1 or 2 (according to function) Maximum frequency (khz) Modules TSX CTZ 1A and 2A are identical in their functions. They only differ in their number of channels. The discrete modules that can be configured as counting solutions are as follows: l TSX DMZ 28AR l TSX DMZ 28DR l TSX DMZ 28DT l TSX DMZ 28DTK l TSX DMZ 64DTK TLX DS 37 PL7 40E

16 Micro TSX counting operation Main functional differences This table shows the subsidiary functions which differentiate the various counting solutions on the Micro TSX. Common elements (See Description of the Micro TSX counting functions, p. 35) do not appear in this table. Counting on discrete inputs no IA RS422/RS485 physical input No hardware enabling Integral counting on the TSX 3722 Physical input IA RS422/RS485 24V hardware enabling TSX CTZ1A/2A modules Physical input IA RS422/RS485 24V hardware enabling No counter outputs No counter outputs 1 counter output when counting down and 2 counter outputs for counting and counting/counting down No enabling event or counter output No physical input marker on the IZ revolution No enabling event 1 physical input marker on the IZ revolution (channel 11 only) Enabling and counter output event 1 physical input marker on the IZ revolution TSX CTZ2AA modules Physical input IA RS422/RS485 24V hardware enabling 1 counter output when counting down and 2 counter outputs for counting and counting/down counting Enabling and counter output event 1 physical input marker on the IZ revolution No rollover No rollover No rollover Rollover mode Preset: 2 configuration modes Preset: 3 configuration modes channel 11 and 2 modes channel 12 Preset: 7 configuration modes No capture No capture Hardware and software capture, 2 configuration modes No current value comparison on rollover No current value comparison on rollover No current value comparison on rollover Preset: 7 configuration modes Hardware and software capture, 2 configuration modes Current value comparison on rollover 16 TLX DS 37 PL7 40E

17 Micro TSX counting operation Main time performances This table shows the main time performances of the different counting solutions. Immunity from counting inputs for mechanical contacts Response time for capture and preset inputs Response time for event processing: l taking into account an event input. l setting an output. Response time for processing in MAST task: (cycle time at 5 ms) l taking into account an input, l setting an output. Counting on discrete inputs Integral counting on the TSX 3722 TSX CTZ 1A/2A modules 0.1 to 7.5 ms 4 ms 3 ms 3 ms this function does not exist 2 ms on: l crossing thresholds or set points, l presetting. this function does not exist 1.5 ms on: l crossing thresholds or set points, l presetting. TSX CTZ 2AA modules 0.1 ms Rising edge: ms Falling edge: ms 1.5 ms on: l crossing thresholds or set points, l enabling, l presetting, l capture, l state of switches. 8 ms 8 ms 8 ms 8 ms 2 ms on: l crossing thresholds or set points or rollover, l enabling, l presetting, l capture, l state of switches. TLX DS 37 PL7 40E

18 Micro TSX counting operation Minimum gap between two thresholds This table gives the minimum gaps in pulse numbers between two thresholds. Frequency of the signal on counting input in KHz Counting on discrete inputs Integral counting on the TSX 3722 TSX CTZ 1A/2A modules 0, incompatible incompatible incompatible incompatible incompatible incompatible incompatible incompatible incompatible incompatible incompatible incompatible incompatible 600 TSX CTZ 2AA modules 18 TLX DS 37 PL7 40E

19 Micro TSX counting operation 2.2 Main functions of discrete and integral counting on the Micro TSX Introduction Aim of this section What s in this Section? This section describes the main functions of discrete and integral counting solutions on the Micro TSX. This Section contains the following Maps: Topic Page Introducing discrete and integral counting on the Micro TSX 20 Introducing a counting or down counting channel 22 Counting or down counting operations 23 Introducing a counting/down counting channel 24 Counting/down counting operation 25 TLX DS 37 PL7 40E

20 Micro TSX counting operation Introducing discrete and integral counting on the Micro TSX Description Micro TSXs are used to count, down count and count/down count pulses using the discrete module in slot 1 or using an integral counter for the TSX The following functions are available: l enabling (See Introducing a counting or down counting channel, p. 22), l preset or reset to zero (See Description of the preset and reset to zero counting functions on the Micro TSX, p. 45), l comparisons (See Description of the counting comparison function on the Micro TSX., p. 58), l event processing (See Software implementation, p. 111). Counting using a discrete module is done on inputs %11.0 -%11.3 and integral counting on channels 11 and 12 of the Micro TSX CPU. The reading value is encoded in 24 bits plus the sign ( to ) for discrete counting and 11 bits plus the sign for integral counting. 20 TLX DS 37 PL7 40E

21 Micro TSX counting operation Illustration The figure below shows the global structure of a channel. According to the function selected (counting, down counting or counting/down counting), certain functions may not be active. Physical input IPres or IReset Physical input marker on the IZ revolution Enable Configuration & >1 Preset value Preset register or reset EVT processing EVT & Preset event or reset Preset or reset direct Reset SET Q RESET Reset or preset done Enable direct Physical IA input Changing direction, physical input IB Counter or Down counter EVT processing Measurement overrun Current value Measurement invalid Threshold values and set point values Comparison EVT & Event Processed Comparison current value TLX DS 37 PL7 40E

22 Micro TSX counting operation Introducing a counting or down counting channel Introduction Illustration This section shows the functional kernel of a channel, for integral and discrete counting, enabling must be direct (no enabling input). The counting and down counting function kernel of discrete modules or integral counting is shown below. Direct enabling Measurement overrun Physical input IA Counting inputs Current value Current value Invalid measurement Note The associated language objects are described in the section implicit objects (See Default exchange language objects linked to the application specific counting function, p. 121). 22 TLX DS 37 PL7 40E

23 Micro TSX counting operation Counting or down counting operations Introduction Basic principles Operation The basic operation of discrete modules or Micro TSX integral counting in counting or down counting on its own is described below. Counting or down counting are developments of the same module register; only the direction of the stages is different. This is defined by the software configuration (counting or down counting only functions). The counting values are between: l 0 and in counting (24 unsigned bits), l and in down counting (24 bits + sign). This trend diagram illustrates the counting procedure. Down counting is similar; only the direction of the current reading is reversed. The associated language objects are described in the section implicit objects (See Default exchange language objects linked to the application specific counting function, p. 121). Physical input IA Direct enabling Current value TLX DS 37 PL7 40E

24 Micro TSX counting operation Introducing a counting/down counting channel Introduction Illustration This section shows the functional kernel of a channel for integral and discrete counting; enabling must be direct (no enabling input). The counting and down counting function kernel of discrete modules or integral counting is shown below. Direct enabling Measurement overrun Physical inputia Physical input 1B Changing direction Counting inputs Current value Current value Invalid measurement Note Input characteristics The associated language objects are described in the section implicit objects (See Default exchange language objects linked to the application specific counting function, p. 121). This table summarizes the input characteristics of the counting/down counting function (for each channel). Modules involved discrete module Integral counting Special Features l No input marker on the IZ revolution. l Physical inputs IPres and IB are exclusive. l The marker input on the IZ revolution is only present on channel 11; it is not on channel 12. l Input IB is only on channel 11; it is not on channel TLX DS 37 PL7 40E

25 Micro TSX counting operation Counting/down counting operation Introduction The basic operation of discrete modules or Micro TSX integral counting in counting/ down counting on its own is described below. Basic principles This function is used to post pulses (on 24 bits plus the sign) of the value to It is possible to select reverse direction mode according to the input configuration: l IA count and IB down counting, l IA count/down counting and IB shows the direction, l IA count/down count and the direction is given by the automatic system application, l Incremental encoder. Operation This trend diagram illustrates the counting/down counting procedure. In this case, 1A counts/down counts and 1B shows the direction. The associated language objects are described in the section implicit objects (See Default exchange language objects linked to the application specific counting function, p. 121). Physical inputia Physical inputib Direct enabling Current value TLX DS 37 PL7 40E

26 Micro TSX counting operation 2.3 Main functions of the TSX CTZ 1A, TSX CTZ 2A and TSX CTZ 2AA modules Introduction Aim of this section What s in this Section? This section describes the main functions of the modules This Section contains the following Maps: Topic Page Introduction of TSX CTZ 1A, 2A and 2AA data modules 27 Introducing a counting or down counting channel 29 Counting or down counting operations 30 Introducing a counting/down counting channel (TSX CTZ1A, 2A and 2AA) 31 Counting/down counting operation TLX DS 37 PL7 40E

27 Micro TSX counting operation Introduction of TSX CTZ 1A, 2A and 2AA data modules Description Modules TSX CTZ 1A, 2A and 2AA are used for counting, down counting or counting/down counting pulses. They have the following functions: l enabling (See Counting or down counting operations, p. 30), l capture (See Description of the counting capture function on the Micro TSX., p. 43) (in counting/down counting), l presetting or resetting to zero (See Description of the preset and reset to zero counting functions on the Micro TSX, p. 45), l comparisons (See Description of the counting comparison function on the Micro TSX., p. 58), l storing transitory events with two counter outputs (See Description of counter outputs associated to Micro TSX counting solutions, p. 63), l event processing (See Software implementation, p. 111). Modules TSX CTZ 1A and TSX CTZ 2A are identical, apart from the number of channels. Module TSX CTZ 2AA also has a rollover function. TLX DS 37 PL7 40E

28 Micro TSX counting operation Illustration The figure below shows the global structure of a channel. According to the function selected (counting, down counting or counting/down counting), certain functions may not be active. Physical input ICapt Configuration EVT processing EVT & Capture event Enabling Direct capture & >1 Register for capture SET Q Reset RESET Value captured Capture done IPres Physical input or IReset Physical input marker on the IZ revolution Configuration EVT processing EVT & Preset event or reset Enabling Preset or direct reset & >1 Preset register or reset SET Q Reset RESET EVT processing EVT & Reset or preset done Event enabling Physical input IVal Enabling Direct enabling Physical inputia Changing direction, physical input IB Threshold and set point values & >1 Configuration Counter or Down counter Comparison EVT processing EVT SET Q RESET Measurement overrun Current value Invalid measurement & Direction Event Processed Comparison with current value and with captured value Counter output 0 SET RESET Q Counter output 1 28 TLX DS 37 PL7 40E

29 Micro TSX counting operation Introducing a counting or down counting channel Introduction Illustration This section shows the function kernel of a channel, i.e. blocks for: l counting or down counting, l enabling. The counting and down counting function kernel of modules TSX CTZ1A, 2A or 2AA is shown below. EVT processing & Event enabling EVT Physical input IVal Enabling & >1 Counter enable active Direct enabling Physical inputia Configuration Counter or Down counter Measurement overrun Current value Invalid measurement Direction Note Physical input Input characteristics The associated language objects are described in the section implicit objects (See Default exchange language objects linked to the application specific counting function, p. 121). Counting or down counting functions on their own only allow one physical counting input, shown above (signal applied on input IA). This table summarizes the input characteristics of the counting or down counting functions (for each channel). Modules involved Main physical input Enabling counting or down counting TSX CTZ1A, 2A and 2AA IA l hardware: input IVal, conditioned by the software command Enabling, l directly by the software (command Direct enabling). TLX DS 37 PL7 40E

30 Micro TSX counting operation Counting or down counting operations Introduction Basic principles Operation The basic operation of modules TSX CTZ 1A, 2A and 2AA in counting or down counting alone is described below. Counting or down counting are developments of the same module register; only the direction of the stages is different. This is defined by the software configuration (counting or down counting only functions). Advancing the counting register is only possible when the function is enabled: l either by a physical input (IVal) with a software presetting (command Enabling), l or directly by the software: command Direct enabling. The counting values are between: l 0 and in counting (24 unsigned bits), l and in down counting (24 bits + sign). This trend diagram illustrates the counting procedure. Down counting is similar, only the direction of the current reading is reversed. The associated language objects are described in the section implicit objects (See Default exchange language objects linked to the application specific counting function, p. 121). IA physical input IVal physical input Enabling Direct enabling Current value 30 TLX DS 37 PL7 40E

31 Micro TSX counting operation Introducing a counting/down counting channel (TSX CTZ1A, 2A and 2AA) Introduction Illustration This section shows the function kernel of a channel, i.e. blocks for: l counting/down counting, l enabling. The counting/down counting function kernel of modules TSX CTZ1A, 2A or 2AA is shown below. EVT processing & Enabling event EVT Physical input IVal Enabling & >1 Counter enable active Direct enabling Physical IAinput Changing direction, IB physical input Configuration Counter or Down counter Measurement overrun Current value Invalid measurement Direction Note: this illustration is very similar to that of the counting or down counting only function. The main differences are on the physical input level. The associated language objects are described in the section implicit objects (See Default exchange language objects linked to the application specific counting function, p. 121). Important note Physical inputs Enabling (hardware or software) is a special function, intrinsically linked with the main counting/down counting function. In fact, without enabling, there can be no counting or down counting. For this reason, unlike other functions, enabling is shown here. The counting/down counting function allows four physical counting input configurations, as described in the table below. TLX DS 37 PL7 40E

32 Micro TSX counting operation Input characteristics This table summarizes the input characteristics of the counting/down counting function (for each channel). Modules involved Input configurations Enabling TSX CTZ1A, 2A and 2AA l One physical input IA and a software input (counting direction). l Two physical inputs: IA (main) and IB (counting direction). l Two physical inputs: IA (counting) and IB (down counting). l Three physical inputs: IA and IB on an incremental encoder and, IZ on the marker on the encoder revolution. l hardware: physical input IVal, l software. 32 TLX DS 37 PL7 40E

33 Micro TSX counting operation Counting/down counting operation Introduction Basic principles Operation The operation of modules TSX CTZ1A, 2A and 2AA in combined counting/down counting is shown below. Counting or down counting are developments of the same module register, only the advancement direction is different. This is defined by a software configuration, by a physical input or by the application of a counting signal on a particular input. Advancing the counting register is only possible when the function is enabled: l either by a physical input (IVal) with a software presetting (command enabling), l or directly by the software: command Direct enabling. The counting values are between: l and (24 bits + sign). The trend diagram below shows the counting/down counting procedure when the counting signal is applied to the input IA, the input IB determining the counting direction. There are several other possibilities for determining the counting direction (See Description of counting input interfaces on the Micro TSX, p. 39), but the counting/down counting principle remains the same. The associated language objects are described in the section implicit objects (See Details of default exchange objects, p. 123). IA physical input IB physical input IVal physical input Enabling Direct enabling Current value TLX DS 37 PL7 40E

34 Micro TSX counting operation 34 TLX DS 37 PL7 40E

35 Description of the Micro TSX counting functions 3 Introduction Aim of this chapter What s in this Chapter? This chapter gives an exhaustive description of all the Micro TSX counting solution functions: l 500 Hz counting on discrete inputs, l 10 KHz integrated counting, l counting on TSX CTZ 1A, 2A and 2AA modules. This Chapter contains the following Sections: Section Topic Page 3.1 Introducing the counting functions Description of counting input interfaces on the Micro TSX Description of the counting capture function on the Micro TSX Description of the preset and reset to zero counting functions on the Micro TSX Description of the counting comparison function on the Micro TSX. 3.6 Description of counter outputs associated to Micro TSX counting solutions 3.7 How to deal with counting solution faults in the Micro TSX TLX DS 37 PL7 40E

36 Micro TSX counting functions 36 TLX DS 37 PL7 40E

37 3.1 Introducing the counting functions Micro TSX counting functions Introducing input configurations and functions associated with counting Introduction Input configurations Counting solutions on the Micro TSX offer many possibilities for offline processing of rough counting results, according to the type of module, the type of sensor and the mode (counting function) chosen. This chapter describes input configurations and associated functions available for all solutions: l discrete counting, l integral counting, l counting with modules CTZ1A, 2A and 2AA. As this chapter describes operating principles, it is necessary to refer back to the section Introduction (See Main functional differences, p. 16) to find out about the specific features of each counting solution. The following table shows counting inputs available for each counting solution. Discrete counting Integral counting channel 11 Integral counting channel 12 Input IA Input IA Input IA Input IA No physical input marker on the IZ revolution. Input IB (exclusive with IPres) Input marker on the IZ revolution. No physical input marker on the IZ revolution. CTZ modules Input IB No input IB Input IB Input marker on the IZ revolution. These counting inputs cannot be switched round. Associated function characteristics The associated functions are used to adapt counting solutions to the application and to select the most appropriate solution. TLX DS 37 PL7 40E

38 Micro TSX counting functions Functions The table below summarizes the main characteristics of existing functions and their availability according to the operating mode. Function Description Availability Invalid measurement Detecting a loss of pulse caused by defective operating conditions or when capacity has been exceeded. All modes. Presetting or resetting to zero Capture Comparison Pre-setting a counting register to a defined value (zero for resetting to zero). Storing an immediate counting/down counting register value. Comparing a current value with a preset value (zero in down counting only). Comparing the captured value with a preset value. Resetting to zero in counting, presetting in down counting or combined counting/down counting. Only in combined counting/down counting. All modes. Only in counting/down counting. Counter outputs Storing a preset fleeting event. All modes. Number of counter outputs (one or two) depending on the module and the mode. Event processing Several events can trigger a process and a reflex action: l enabling counting or down counting, l presetting or resetting to zero, l crossing the threshold or set point, l capture (in counting/down counting). All modes 38 TLX DS 37 PL7 40E

39 3.2 Description of counting input interfaces on the Micro TSX Micro TSX counting functions Description of counting input interfaces Introduction Configuration: IA up/down counts, direction according to application This section describes the operation of input interfaces in up counting/down counting mode. The solutions involved are described in the introduction (See Input configurations, p. 37) table. The figure below represents the counting signal applied to IA input. IA Changing direction counting down counting In this configuration, the change of direction bit managed by the application determines the up counting or down counting direction on the rising edges of the signal. Configuration: IA up/down counts, direction according to IB The following figure represents the counting signal applied to IA and IB inputs which determine the counting direction. IA IB counting down counting Minimum time Minimum time Up/down counting is done on the rising edges of pulses received on IA input. The Minimum time is 20 microseconds for discrete or integral counting. It is 3 microseconds for TSX CTZ modules. TLX DS 37 PL7 40E

40 Micro TSX counting functions Configuration: IA upcounts, IB downcounts The figure below represents the counting signal applied to IA input (in up counting) or to IB input (in down counting) IA IB counting down counting Pulses are taken into account by the up/down counter on the rising edges of the physical input in progress. IA input increments the up/down counter (upcounting) and IB input decrements it (downcounting). If pulses on the two inputs are simultaneous, the up/down counter does not change. Note: up counting IA with down counting IB involves discrete counting, channel 11 of integral counting, and TSX CTZ modules. 40 TLX DS 37 PL7 40E

41 Micro TSX counting functions Configuration: incremental encoder In this operating mode, physical inputs IA and IB are connected to an incremental encoder which supplies two out-of-phase signals of 90. The extent that inputs IA and IB are out of phase determines the direction of up/down counting. The figure below represents counting (IA ahead of IB). IA IB 90 IZ Increments +1 phase shift The incremental encoder also supplies marker information on a revolution to be connected to the IZ input, which is used to preset the up/down counter. The figure below represents down counting (IA behind IB). IA IB phase shift Decrements TLX DS 37 PL7 40E

42 Micro TSX counting functions Incremental encoder interface options Two options are available on the configuration screen when an incremental encoder is connected: If the line check is configured (encoder with RS 422 / 485 output), multiplying by 1 is configured, Then the PLC indicates a fault when it detects that there is a break in the encoder cable on one of the physical inputs IA, IB or IZ. It is then possible to start the application procedure which corresponds to the fault. up/down counting is done on rising edges of physical IB input (case shown : counting). IA IB multiplying by 4 is configured, up/down counting is done on all the rising and falling edges of physical inputs IA and IB (case shown : down counting). IA IB Hysteresis function Rollover function The hysteresis function is used to remove vibration phenomena. It is automatically selected with discrete counting/down counting in incremental encoders. The rollover function is used to count/down count in between [0, rollover], the minimum value of the rollover is 1 and the maximum value is (coding on 25 bits). When the rollover function is selected, the thresholds and the setpoints can take values between 0 and Changing the value of the rollover in counting makes the current value change to 0 and changing to 0 in counting down makes the current value change to the rollover value. 42 TLX DS 37 PL7 40E

43 Micro TSX counting functions 3.3 Description of the counting capture function on the Micro TSX. Capture function for data module counters Description Triggering a capture Capture is used to copy the current value of the up/down counting register to a capture register. It therefore fixes the immediate value at the precise moment the operation started. Capture is only possible in combined up/down counting mode for TSX CTZ modules (there is no capture function in integral or discrete counting). Captured information is an event which can undergo an event processing operation. The operation is triggered: l either directly by the software: Direct capture command, l or by the hardware: when the ICapt physical input status is changed with the software being pre-enabled (Capture enabling command). This signal can be: l the rising edge of ICapt input, l the falling edge of ICapt input, l the rising and falling edges of ICapt input, this mode is used to measure the length of a part. Note: time performances are at a maximum when ICapt input is configured on the rising or falling edge. TLX DS 37 PL7 40E

44 Micro TSX counting functions Function hardware structure The figure below shows the hardware structure of the capture function. The associated language objects are described in the section implicit objects (See Default exchange language objects linked to the application specific counting function, p. 121). ICapt physical input Capture Configuration & >1 Event process capture Current value & Capture event Capture enabling Direct capture Capture register SET Q RESET Capture done Captured value Capture reset done Operation The time diagram below shows the capture mode on the rising edge of ICapt. The other modes (capture on falling edge, on rising and falling edges) are similar. IA physical input ICapt physical input Capture enabling Direct capture Direct enabling Current value Captured values 44 TLX DS 37 PL7 40E

45 Micro TSX counting functions 3.4 Description of the preset and reset to zero counting functions on the Micro TSX Introduction Aim of this section What s in this Section? This section describes the preset and reset to zero counting function on the Micro TSX. This Section contains the following Maps: Topic Page Introduction to the preset or reset to zero function 46 Pre-setting on down counting (TSX CTZ 1A, 2A and 2AA) 47 Resetting to zero in counting 49 Presetting in up/down counting 52 TLX DS 37 PL7 40E

46 Micro TSX counting functions Introduction to the preset or reset to zero function General Observations Pre-selection initializes the up/down counting register to a preset value (ie. preset by the software). Resetting to zero is similar and initializes the same register to zero. Pre-selection involves the down counting mode and the combined up/down counting mode. Resetting to zero only involves the counting mode. The operation can be triggered or automatic. The following sections specify the implementation conditions for pre-selection/ resetting to zero, according to the counting method and module used. l Pre-selection (or resetting to zero) acts on the object (see How to deal with an invalid reading, p. 75). l Pre-selection (or resetting to zero) constitutes an event which can undergo an event processing operation. 46 TLX DS 37 PL7 40E

47 Micro TSX counting functions Pre-setting on down counting (TSX CTZ 1A, 2A and 2AA) Introduction Pre-setting initializes the up/down counting register to a value preset by the software. Pre-set is: l triggered l by the hardware: on the rising or falling edge of the IPres physical input with pre-enabled software, command Enable preset, l directly by the software: Direct preset command. l automatic, it will be done when the zero value is crossed. Note: the two types of preset (triggered and automatic) are independent and can co-exist. Illustration The figure below represents the preset function triggered by the hardware. The associated language objects are described in the section implicit objects (See Default exchange language objects linked to the application specific counting function, p. 121). IPres physical input Configuring preset & Preset event processing Value of preset & Preset event Enabling preset SET Q RESET Preset done Direct reset >1 Preset reset Up/Down counting TLX DS 37 PL7 40E

48 Micro TSX counting functions Timing diagrams The following timing diagrams show the different cases for preset with or without automatic reloading when crossing the zero value threshold: The timing diagram below shows a triggered preset, then a direct preset (software). Zero value is crossed without automatic preset IA physical input IPres physical input Enabling preset Direct preset Direct enabling Preset value Current value The timing diagram below shows triggered preset, direct preset and an automatic preset when crossing the zero value. IA physical input IPres physical input Enabling preset Direct preset Direct enabling Preset value Current value 48 TLX DS 37 PL7 40E

49 Micro TSX counting functions Resetting to zero in counting Introduction Resetting to zero initializes the counting register to zero value. Resetting to zero is: l triggered l by the hardware: on the rising or falling edge of the IReset physical input with the software being pre-enabled, command Enable reset to zero, l directly by the software: Direct resetting to zero command. l automatic, it will be done when the zero value is crossed. Note: The IReset input is physically the same as the IPres input used for presetting in down counting mode. The diagram block of the Resetting to zero function is the same as that of the Preset (See Pre-setting on down counting (TSX CTZ 1A, 2A and 2AA), p. 47) function. TLX DS 37 PL7 40E

50 Micro TSX counting functions Timing diagrams The following figures show examples of triggered and automatic resetting to zero: The timing diagram below shows both a triggered reset to zero on the rising edge of IReset input, and a direct reset to zero (via software). The high set point is crossed without automatic reset to zero. The associated language objects are described in the section implicit objects (See Default exchange language objects linked to the application specific counting function, p. 121). IAinput IReset input Enabling reset Direct reset IVal input Enabling Direct enabling Current value High setpoint Current value > high setpoint 50 TLX DS 37 PL7 40E

51 Micro TSX counting functions The timing diagram below shows a triggered reset to zero on the rising edge of IReset input, a direct reset to zero (by software) and an automatic reset to zero when crossing the high set point. Input IA Input IReset Enabling reset to zero Direct reset to zero Input IVal Enabling Direct enabling High set point Current reading Current value > threshold 0 Current value > threshold 1 0 Threshold 0 Threshold 1 TLX DS 37 PL7 40E

52 Micro TSX counting functions Presetting in up/down counting Pre-setting modes Observations In the combined counting/counting down modes there are 7 hardware preset modes which are combinations relating to states and/or edges of physical inputs IPres and IZ : l IPres rising edge, l IPres falling edge, l rising edge of IPres + direction / falling edge of IPres - direction, l rising edge of IPres - direction / falling edge of IPres + direction, l status of IPres, l reference point short cam (with incremental encoder), l reference point long cam (with incremental encoder). Direct preset (by software) exists alongside the hardware preseting modes mentioned above. l There is no automatic pre-selection in combined up/down counting (on crossing a value as there is for up or down counting alone). l There is no presetting in conjunction with absolute encoders. 52 TLX DS 37 PL7 40E

53 Micro TSX counting functions Presetting on IPres edge The first two presetting modes (on IPres rising or falling edge) are the same as those described for down counting only. The figure below shows an example of preset on the IPres rising edge, as well as direct preset (by software). Preset on the IPres falling edge is similar. The associated language objects are described in the section implicit objects (See Default exchange language objects linked to the application specific counting function, p. 121). Physical input IB Physical input IA Physical input IPres down counting counting Enabling preset Direct preset Direct enabling Preset value Current reading TLX DS 37 PL7 40E

54 Micro TSX counting functions Preset on IPres edge combined with counting direction The figure below shows an example of preset on the rising edge of IPres in up counting (+ direction), and on the falling edge of IPres in down counting (- direction). The reverse case is similar. Physical input IB Physical input IA Physical input IPres down counting counting Enabling preset Direct enabling Preset value Current reading 54 TLX DS 37 PL7 40E

55 Micro TSX counting functions Preset on IPres state The figure below shows an example of preset on IPres state (high level). The counting value is fixed at the preset value for the duration of the active state of IPres. Physical input IB counting Physical input IA Physical input IPres Enabling preset Direct enabling Current reading Preset value TLX DS 37 PL7 40E

56 Micro TSX counting functions Preset on reference point short cam This mode and the one that follows (reference point long cam) are to be used with an incremental encoder. The timing diagrams below show preset mode on a reference point short cam. Physical input IPres (short cam) Direction + counting Physical input IZ(zero marker) (1) Physical input IPres (short cam) Direction - down counting Physical input IZ(zero marker) (1) Note: (1) preset is taken into account : l in + direction (up counting): IPres input at state 1, rising edge of marker input at revolution IZ and software enabling. l in direction - (down): input IPres at state 1, falling edge of marker input at revolution IZ and software enabling. Note: In principle, as the short cam is less than an incremental encoder revolution, the revolution marker is only produced once in the cam. If, however, there are several incremental revolutions in the cam, the last active edge of the revolution marker signal triggers preset. 56 TLX DS 37 PL7 40E

57 Micro TSX counting functions Preset on long cam reference point The timing diagrams below show preset mode on a reference point long cam. Counting direction Physical input IPres (long cam) Physical input IZ (zero marker) Preset Down counting direction Physical input IPres (long cam) Physical input IZ(zero marker) Preset Note: preset is taken into account on the first rising edge of the revolution marker input IZ which follows the changeover of the input IPresto status 0, both in the counting and the down counting directions and software enabling. TLX DS 37 PL7 40E

58 Micro TSX counting functions 3.5 Description of the counting comparison function on the Micro TSX. Introduction Aim of this section What s in this Section? This section describes the counting comparison function on the Micro TSX. This Section contains the following Maps: Topic Page Introducing the comparison function 59 Comparison in up or down counting 60 Comparison in up/down counting mode TLX DS 37 PL7 40E