High-Speed Counter/Pulse Output Instructions; Mode Control: Ini(880) (Cj1M-Cpu21/22/23 Only) - Omron SYSMAC CJ - REFERENCE MANUAL 01-2008 Reference Manual

High-speed Counter/Pulse Output Instructions

3-21 High-speed Counter/Pulse Output Instructions

3-21-1 MODE CONTROL: INI(880) (CJ1M-CPU21/22/23 Only)

Purpose
long time are being used; it can also cause errors in timers (TIM and TIMH)
and data tracing. Be particularly careful when the scheduled time interval
units are set to 0.5 ms or 1 ms in the PLC Setup.
Interrupts are accepted even while one instruction is being executed. There-
fore, if an interrupt is accepted while an instruction requiring a long processing
time is being executed, correct processing results may not be obtained
because both the interrupt task and the instruction may access the same
data. In such a case, use DI(693) and EI(694) to disable and enable the inter-
rupt.
This section describes instructions used to control the high-speed counters
and pulse outputs.
Instruction
MODE CONTROL
HIGH-SPEED COUNTER PV READ
COUNTER FREQUENCY CONVERT
REGISTER COMPARISON TABLE
SPEED OUTPUT
SET PULSES
PULSE OUTPUT
ACCELERATION CONTROL
ORIGIN SEARCH
PULSE WITH VARIABLE DUTY FACTOR
INI(880) can be used to execute the following operations for built-in I/O of
CJ1M CPU Units:
• To start comparison with the high-speed counter comparison table
• To stop comparison with the high-speed counter comparison table
• To change the PV of the high-speed counter.
• To change the PV of interrupt inputs in counter mode.
Interrupt task
Interrupt
during
execution
Interrupts
disabled
Mnemonic Function
INI 880
PRV 881
PRV2 881
CTBL 882
SPED 885
PULS 886
PLS2 887
ACC 888
ORG 889
PWM 891
Section 3-21
Page
code
865
869
875
879
883
888
891
897
904
907
865