Cpm1/Cpm1A Cycle Time And I/O Response Time; The Cpm1/Cpm1A Cycle - Omron CPM1 - PROGRAMING MANUAL 02-2001 Programming Manual

CPM1/CPM1A Cycle Time and I/O Response Time

8-1

CPM1/CPM1A Cycle Time and I/O Response Time

8-1-1 The CPM1/CPM1A Cycle

Set error flags and
activate indicators.
ERROR or ALARM?
ERROR
(lit)
512
The overall flow of CPM1/CPM1A operation is as shown in the following flow-
chart.
Power application
Initialization processes
Check hardware and
Program Memory.
No
Check OK?
Preset cycle time
monitoring time.
ALARM
(flashing)
Execute user program.
End of program?
Yes
Check cycle time setting.
Minimum
cycle time set?
Yes
Wait until minimum cycle
time expires.
Compute cycle time.
Refresh input bits and
output terminals.
Service peripheral port.
Note Initialization processes include clearing the IR, SR, and AR areas, presetting
system timers, and checking I/O Units.
Yes
No
No
Section
Initialization
Overseeing
processes
Program
execution
Cycle
time
Cycle time
processing
I/O refreshing
Service
peripheral
port.
8-1