TDK Lambda | Z+Low Voltage User Manual

7.3 Rear Panel RS232/485 Connector The RS232/485 interface is accessible through the Rear panel RS232/485 IN and RS485 OUT connectors. The connectors are 8 contact RJ-45. The IN and OUT connectors are used to connect power supplies in a RS232 or RS485 chain to a controller. Refer to Fig.7-1 for IN/OUT connectors.

Shield (Connector enclosure)

NC 8 NC 7

1 SG 2 NC

TXD- 6 RXD- 5 RXD+ 4 TXD+ 3

3 RXD+ 4 TXD+ 5 TXD 6 RXD

OUT

IN

NC 2 SG 1

7 TX 8 RX

Fig.7-1: J4 rear panel IN/OUT connectors pinout

NOTE: Tx and Rx are used for RS232 communication. Txd +/- and Rxd +/- are used for RS485 communication. Refer to RS232 and RS485 cable descriptions for connection details.

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