Cqm1 Cycle Time And I/O Response Time - Omron CPM1 Programming Manual

CQM1 Cycle Time and I/O Response Time

7-1 CQM1 Cycle Time and I/O Response Time
7-1-1 The CQM1 Cycle
CQM1 Operation
Flowchart
Set error flags
and activate
indicators.
ERROR or ALARM?
ERROR
(lit)
392
The overall flow of CQM1 operation is as shown in the following flowchart.
Power application
Is DIP switch
pin 2 set to
ON?
ON
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.
No
Check OK?
Yes
Preset cycle time
monitoring time.
ALARM
(flashing) Execute user's program.
End of program?
Yes
Check cycle time set-
ting.
Minimum
cycle
time?
Yes
Wait until minimum cycle
time expires.
Compute cycle time.
Refresh input bits and
output terminals.
Service RS-232C port.
Service peripheral port.
OFF
Initialization
Overseeing
processes
Program
No
execution
No
Cycle time
processing
I/O refreshing
Service
RS-232C
interface.
Service
peripheral
port.
Section 7-1
Cycle
time