Omron FQM1-MMP21, FQM1-CM001, FQM1-MMA21 Appendix C, Fixed Peripheral Servicing Time

System Setup, Auxiliary Area Allocations, and Built-in I/O Allocations Appendix C

Note The watch cycle time setting cannot be changed while the Module is in RUN or MONITOR mode.

	Watch Cycle	Watch Cycle	Watch Cycle
	Time
		Time
			Time
Watch
Time	Actual Cycle	Actual Cycle	Actual Cycle
	Time	Time	Time
			↓
			OVER
Cycle Time			ON
Too Long Flag
				↓
A401.08
			Module operation
			is stopped.

Note The default value for the watch cycle time is 50 ms.

Fixed Peripheral Servicing Time

This setting determines whether the peripheral servicing for the following processes is performed with the default settings (6.25% of the cycle time) or all together in a fixed servicing time.

Exchange data with Modules when necessary

Exchange data with peripheral port

Exchange data with serial communications ports

Power ON

	Initialization
	Common processes
	Program execution
Cycle	(Tasks executed)
time
	I/O refreshing
	Cyclic refreshing
	Peripheral servicing

The following table shows a breakdown of the peripheral servicing time.

Peripheral servicing time	Default value	Setting range
Event service time for	6.25% of the previous	Uniform servicing time in ms:
Motion Control Modules	cycle’s cycle time	0.0 to 25.5 ms (unit: 0.1 ms)
Event service time for	Same as above.
peripheral port
Event service time for	Same as above.
RS-232C port
Event service time for	Same as above.
RS-422A port

Note A default value of 100 ∝s is allocated in Motion Control Modules for event servicing with the Coordinator Module

327