Omron FQM1-MMA21, FQM1-CM001, FQM1-MMP21 operation manual Pulse Inputs, Section

Pulse Inputs		Section 7-5
	Item	Specification
Counter values		Linear Counter: 8000 0000 to 7FFF FFFF hex
		Circular Counter: 0000 0000 to Circular maximum count (hex)
		(The circular maximum count is set in the System Setup between 0000
		0001 and FFFF FFFF hex.)
High-speed counter PV storage locations		High-speed counter 1: A601 (upper bytes) and A600 (lower bytes)
		High-speed counter 2: A603 (upper bytes) and A602 (lower bytes)
		These values can be used for target-value comparison interrupts or
		range-comparison bit pattern outputs.
		Note The PVs are refreshed during the Motion Control Module’s I/O
		refresh. The PVs can also be read with the PRV(881) instruction.
		Data storage format: 8-digit hexadecimal
		• Linear Counter: 8000 0000 to 7FFF FFFF hex
		• Circular Counter: 0000 0000 to Circular maximum count
Latch inputs		There are two latch inputs. One latch input can be for each high-speed
		counter or both latch inputs can be used for one high-speed counter. It is
		also possible for both high-speed counters to share one latch input.
		The latched PV can be read with the PRV(881) instruction.
Control	Target value comparison	Register up to 48 target values and interrupt tasks.
method
	Range comparison	Register up to 16 upper limits, lower limits, and output bit patterns.
Counter reset		Phase Z Signal + Software Reset
		The counter is reset on the phase-Z signal if the Reset Bit is ON.
		Software Reset
		The counter is reset when the Reset Bit is turned ON.
		Note The counter reset method is set in System Setup.
		Reset Bits
		A610.01 is the Reset Bit for high-speed counter 1 and A611.01 is the Reset
		Bit for high-speed counter 2.
Mea-	Counter movements	Measures the change in the high-speed counter’s PV for the set sampling
sure-	(mode 1)	time or each cycle.
ment		Sampling time: 1 to 9,999 ms
mode
		Movement (absolute value): 0000 0000 to FFFF FFFF hex
	Counter frequency	The frequency is calculated from the PV between 0 and 500,000 Hz.
	(mode 2)
	Measurement storage location	High-speed counter 1: A605 (upper bytes) and A604 (lower bytes)
	for above measurements	High-speed counter 2: A607 (upper bytes) and A606 (lower bytes)
		Note The high-speed counter value can also be read with the PRV(881)
		instruction.
		Stored Data
		Movement: 8-digit hexadecimal
		Frequency: 8-digit hexadecimal
		Note The data is refreshed during the Motion Control Module’s I/O refresh
		period.
	• Select mode 1 or mode 2 in the System Setup.
	• Measurement starts when the Measurement Start Bit (A610.02 for high-speed counter 1 or A611.02 for
	high-speed counter 2) is turned ON.
	• The Measuring Flag (A608.06 for high-speed counter 1 or A609.06 for high-speed counter 2) will be ON dur-
	ing the measurement.

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