Mitsubishi Electronics MR-J2S- A Communication, Refer to for the communication function

3. SIGNALS AND WIRING

		Connec-		I/O	Control
Signal	Symbol	tor pin	Functions/Applications		mode
				division
		No.			P	S	T
Encoder Z-phase	OP	CN1A	Outputs the zero-point signal of the encoder. One pulse is output	DO-2
pulse		14	per servo motor revolution. OP and LG are connected when the
(Open collector)			zero-point position is reached. (Negative logic)
			The minimum pulse width is about 400 s. For home position
			return using this pulse, set the creep speed to 100r/min. or less.
Encoder A-phase	LA	CN1A	Outputs pulses per servo motor revolution set in parameter No.	DO-2
pulse		6	27 in the differential line driver system. In CCW rotation of the
(Differential line	LAR	CN1A	servo motor, the encoder B-phase pulse lags the encoder A-phase
driver)		16	pulse by a phase angle of /2.
Encoder B-phase	LB	CN1A	The relationships between rotation direction and phase difference
pulse		7	of the A- and B-phase pulses can be changed using parameter No.
(Differential line	LBR	CN1A	54.
driver)		17
Encoder Z-phase	LZ	CN1A	The same signal as OP is output in the differential line driver	DO-2
pulse		5	system.
(Differential line	LZR	CN1A
driver)		15
Analog monitor 1	MO1	CN3	Used to output the data set in parameter No.17 to across MO1-LG	Analog
		4	in terms of voltage. Resolution 10 bits	output
Analog monitor 2	MO2	CN3	Used to output the data set in parameter No.17 to across MO2-LG	Analog
		14	in terms of voltage. Resolution 10 bits	output

(3) Communication

POINT

Refer to Chapter 14 for the communication function.

		Connec-		I/O	Control
Signal	Symbol	tor pin	Functions/Applications			mode
				division
		No.			P		S	T
RS-422 I/F	SDP	CN3	RS-485 and RS-232C functions cannot be used together.
		9	Choose either one in parameter No. 16.
	SDN	CN3	Short “15” and “10” at the last axis.
		19
	RDP	CN3
		5
	RDN	CN3
		15
RS-422	TRE	CN3	Termination resistor connection terminal of RS-422 interface.
termination		10	When the servo amplifier is the termination axis, connect this
			terminal to RDN (CN3-15).
RS-232C I/F	RXD	CN3	RS-485 and RS-232C functions cannot be used together.
		2	Choose either one in parameter No. 16.
	TXD	CN3
		12

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