Cycle Time - Omron C200H Operation Manual

Cycle Time

6-1-1 CPU01-E, 03-E Cycle Time
Sets error flags and turns
ON or flashes indicator
ALARM/ERROR
ALARM
(Flashing)
ERROR
(Solid ON)
Power application
Clears IR area and
resets all timers
Checks I/O Unit
connections
Resets watchdog
timer
Checks hardware and
Program Memory
NO
Check OK?
YES
Services Link Units
Services Peripheral devices
Resets watchdog timer and
program address counter
Executes program
End of program?
YES
Resets watchdog timer
Refreshes input bits
and output signals
The first three operations immediately after power application are performed
only once each time the PC is turned on. The rest of the operations are per-
NO
Section 6-1
Initialization
on power-up
Overseeing
processes
Link Unit
servicing
PC
Peripheral
cycle
device
time
servicing
Program
execution
I/O
refreshing
221