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Connecting to the Host’s RS-422A/485 Port Section 5-2
Reference: When RS-485 is used at the PT side, only the NT link (1:N) method (standard
or high-speed) can be used.
Connecting an NT31/NT31C and Host
Wiring When Connecting a CS-series Serial Communications Board, CS/
CJ-series Serial Communications Unit, C-series C200HX/HG/HE(-Z)E
Communications Board, or CQM1H Serial Communications Board
Applicable Units:
Note A Serial Communications Board cannot be used.
NT31/NT31C
CPU Unit
25-pin connector
9-pin connector
RS-485 cable with connectors
Serial port B
(RS-485, 25-pin type)
CS/CJ-series,
C200HX/HG/HE(-Z)E,
CQM1H PLC
CS1W-SCU31-V1
CJ1W-SCU31-V1/CJ1W-SCU41(-V1)
CS1G-CPU42/43/44/45-E(V1)
CS1H-CPU63/64/65/66/67-E(V1)
CS1G-CPU42H/43H/44H/45H-E(V1)
CS1H-CPU63H/64H/65H/66H/67H-E(V1)
CS1D-CPU65H/67H (See note.)
C200HE-CPU32/42-(Z)E
C200HG-CPU33/43/53/63-(Z)E
C200HX-CPU34/44/54/64-(Z)E
C200HX-CPU65-ZE/85-ZE
CQM1H-CPU51/61
C200HX-CPU65-ZE/85-ZE
CQM1H-CPU51/61
NT31/NT31C
RS-485
Host