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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