Xinje OP325-A - Emerson EC20 Series PLC Connection

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3. CPU RS485 expansion card:
(1) RS422 connection
VIGOR VB series
OP RS485
expansion card
9-pin D-type female port 5-wire terminal
（Diagram 3— fit for OP320, OP320-A, OP325, OP330）
(2) RS485 connection
VIGOR VB series
OP RS485 expansion card RS485
9-pin D-type female port 5-wire terminal
（Diagram 4 — fit for OP320-S, OP320-A-S, OP325-S, OP33-S）
3-14．Emerson EC20 series PLC
3-14-1．Connected unit
Series CPU
Connected
module
Port Cable Choose PLC type in OP20
EC20 EC20
COM0
RS232
Diagram1
Emerson EC20 series PLC
COM1
RS485
Diagram2
RS232
Diagram3