Omron FQM1-MMP21, FQM1-CM001 Pulse Outputs, Section, Procedure, Electronic Cam Control Functions

Pulse Outputs Section 7-6

• Use PRV(881) to read the pulse output PV of the specified port.

Single-phase

pulse output

Start output

CW

Pulse output

Mode settings for ports 1 and 2

System Setup

Pulse output mode

(fixed duty ratio)

Ladder program				Ladder program
PULS	SET PULSE		ACC	Mode settings (CW/CCW, accel-
	Set the number			eration/deceleration, independ-
		ACCELERTION		ent/continuous)
	of output pulses.
		CONTROL		Target frequency: 0 Hz to 1 MHz
				Acceleration/deceleration rate
INI	MODE CONTROL			(common) (1 or 2 ms cycle,
				1 Hz to 9,999 Hz)
	Stop pulse output.
				Start pulse output.

CCW

CW

CCW

port 1

Pulse output port 2

Refresh status (once each cycle		Refresh PV (once each cycle)			Refresh PV (immediate refresh)
just after instruction execution)							HIGH-SPEED
Pulse output status			Pulse output PV			PRV
Port 1							COUNTER
	A624	Port 1	A621	A620
Port 2	A625	Port 2	A623	A622			PV READ

Pulse Outputs without Acceleration/Deceleration (PULS(886): Electronic Cam Control)

This procedure shows how to use the PULS(886) instruction’s electronic cam control function to generate a single-phase pulse output without acceleration or deceleration. The number of output pulses can be changed during position- ing.

Procedure

1,2,3... 1. Determine pulse output port.

•Select pulse output 1 or 2.

2.Wire the output.

•Output: CW and CCW

•Output power supply: 5 V DC

Electronic Cam Control Functions

3.Make the necessary System Setup settings (Pulse Output Tab Page − Op- eration Mode).

•Set the pulse output operation mode (in the Pulse Output Tab Page − Operation Mode) to absolute linear pulse output (electronic cam control) or absolute circular pulse output (electronic cam control).

•Set the clock speed for pulse outputs 1 and 2.

4.Create the necessary ladder programming.

•Use PULS(886) to set the absolute position, output frequency, and pulse output (automatic determination of pulse output direction) for the specified port.

•Use INI(880) to stop pulse output from the specified port.

•Use PRV(881) to read the pulse output PV of the specified port.

The electronic cam control supports the following functions.

•The pulse output direction is determined automatically by comparing the present position (pulse output PV) and target position.

•The PULS(886) instruction can be executed during pulse output to change the absolute position setting and pulse frequency.

•Applications of Electronic Cam Operation:

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