Omron FQM1-MMP21, FQM1-CM001 Clearing Constant Cycle Time Exceeded Errors, Normal Operation

Cycle Time Settings Section 5-6

5-6-4 Clearing Constant Cycle Time Exceeded Errors

When using the constant cycle time function, normally the cycle time will no longer stay constant (i.e., will vary depending on the real cycle time) if the constant cycle time is exceeded once. To return to a constant cycle time even if the cycle time has been exceeded once, turn ON the Constant Cycle Time Exceeded Error Clear Bit (A509.15) (i.e., set to 1).

This function allows a constant cycle time to be restored and variations in I/O processing time to be kept to a minimum even if the cycle time is temporarily long as a result of special processing, e.g., initialization at the start of user programs in each Module.

Normal Operation

The constant cycle time function is cleared if the cycle time exceeds the set constant cycle time.

Cycle time
Constant cycle	Constant cycle time cleared
time value

Constant cycle time

Real cycle time

Time

Constant Cycle Time Exceeded Error Clear Function

The constant cycle time function can be enabled again by turning ON the

Constant Cycle Time Exceeded Clear Bit.

Cycle time	Constant cycle time cleared
Constant cycle		Constant cycle time
time
		enabled again
Constant cycle
time
Real cycle time
			Time
Constant Cycle Time
Exceeded Flag
(A404.05)
Constant Cycle Time
Exceeded Error Clear Bit		ON for 1 scan
(A509.15)
Auxiliary Area Bits
Bit	Function		Controlled by
Constant Cycle Time A509.15	OFF to ON:		User
Exceeded Error	Constant cycle time exceeded
Clear Bit	error cleared.

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