X8 Instruction Set Reference Manual
8-2
Timer and Counter Instructions
Timers and counters are output instructions that let you control operations
based on time. The following Timer and Counter Instructions are described in
this chapter:
Timer Instructions
Overview
To use timer, the TM instruction for timer data table must be used and is used
to configure and monitoring.
Timer data table has three sub-elements for timer controlling. These
sub-elements are:
• Timer Control and Status
• Preset
This is the value that the timer must reach before the timer times out. When the
accumulator reaches this value, the DONE status bit is set.
• Accumulator
This is the timer value that currently accumulated. It represents elapsed time.
The accumulator data range is from 0 to 32767.
Timers can be set to any one of three time bases.
The TimeBase 0 and TimeBase1 value in the table above is automatically set in
the ladder program. If the BASE value in the figure below is set to 0.001, the
TimeBase 0 and TimeBase1value in the TM data table related with the BASE
value is set automatically.
Instruction
Description
TON Timer
ON
TOF Timer
OFF
TONR
Retentive Timer
CTU
Count up
CTD
Count down
RSTA
Accumulator Initialization (Reset)
Timer Base Settings
Time Base
Timing Range
Data Table Settings
TimeBase1
TimeBase0
0.001 seconds
0 ~ 32.767 seconds
0
1
0.01 seconds
0 ~ 327.67 seconds
0
0
1.00 seconds
0 ~ 32,767 seconds
1
0
Содержание X8 Series
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Страница 64: ...X8 Instruction Set Reference Manual 2 12 X8 Series PLC Memory and Data Table ...
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Страница 236: ...X8 Instruction Set Reference Manual 15 8 Shift and FIFO LIFO Instructions ...
Страница 242: ...X8 Instruction Set Reference Manual 16 6 Sequencing Instructions ...
Страница 252: ...X8 Instruction Set Reference Manual 18 4 Input and Output Instructions ...
Страница 280: ...X8 Instruction Set Reference Manual 20 12 PID Control ...
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Страница 312: ...Appendix A 4 System Error Code ...
Страница 313: ...Appendix B MSG Instruction Error Code MSG Instruction Error Code ...
Страница 322: ...Appendix B 10 MSG Instruction Error Code ...
Страница 325: ...ASCII Character Set Appendix C 3 ...
Страница 326: ...Publication number X8 RM001A EN September 2012 ...
Страница 327: ...Copyright 2012 RS Automation Co Ltd All rights reserved ...