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4. Modular Jack (MJ1/MJ2) 2-11
Specifications
Modular Jack 2 (MJ2: Exclusive to the UG230)
This is a modular jack connector used for connection with the PLC.
Unlike the MJ1, the connector is available as an RS-422 (4-wire) port.
The pins of modular jack 2 correspond to signals as given below.
*1 Switch between RS-232C and RS-422 for pin Nos. 1, 2, 7, and 8 with the slide switch on the POD.
*2 The maximum current for the output power supply (+5 V) is 150 mA when MJ1 or MJ2 is used.
Without the Option Unit UG230A-DCL
The MJ2 is usable as a port for PLC connection.
Slide switch
• Use the switch to set the signal level for the MJ2.
Wiring
For more information, refer to page 2-14.
CAUTION
Before using the MJ2, select whether it is used as an RS-232C or RS-422 port using the
slide switch.
The switch is factory-set to RS-422.
Bottom View
MJ2 Pin No. Signal Name Contents
1
Not used Not used
+SD RS-422 + send data
2
Not used Not used
−SD RS-422 −send data
3
+5V
Externally supplied +5 V
Max. 150 mA
*2
4
5
SG Signal ground
6
7
RD RS-232C receive data
+RD RS-422 + receive data
8
SD RS-232C send data
−RD RS-422 − receive data
12345678
*1
*1
*1
*1
Side View
Slide switch
Lower position: RS-422 (4-wire)
Upper position: RS-232C