Omron CPM1

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CQM1 Cycle Time and I/O Response Time Section 7-1
7-1 CQM1 Cycle Time and I/O Response Time
7-1-1 The CQM1 Cycle
CQM1 Operation
Flowchart
The overall flow of CQM1 operation is as shown in the following flowchart.
Power application
Transfer contents of
Memory Cassette to
CQM1.
Clear IR, SR, AR areas;
preset system timers;
and check I/O Units.
Check hardware and
Program Memory.
Check OK?
Preset cycle time
monitoring time.
Execute user's program.
End of program?
Check cycle time set-
ting.
Minimum
cycle
time?
Wait until minimum cycle
time expires.
Compute cycle time.
Refresh input bits and
output terminals.
Service RS-232C port.
Service peripheral port.
Set error flags
and activate
indicators.
ERROR or ALARM?
No
ERROR
(lit)
ALARM
(flashing)
Initialization
Overseeing
processes
Program
execution
Cycle time
processing
I/O refreshing
Service
RS-232C
interface.
Service
peripheral
port.
Cycle
time
Is DIP switch
pin 2 set to
ON?
OFF
ON
No
Ye s
No
Ye s
Ye s