Connecting to the Host’s RS-422A/485 Port

Section 5-2

Connecting between NT631/NT631C Units

NT631/NT631C

 

 

Host

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RS-422A

:

RDA

NT631/NT631C side

 

 

Short-circuit tool

 

 

Abbreviation

TRM

 

:

 

 

RDA (-)

 

 

 

 

 

RDB

RS-422A/

TRM

 

 

 

RDB (+)

 

 

SDA

485

 

 

interface

SDA (-)

 

 

 

 

 

 

SDB

 

SDB (+)

 

 

RSA

 

RSA (-)

 

 

 

RSB (+)

 

 

 

 

 

 

RSB

 

Functional

 

 

 

ground

 

 

Shielding wire

24V

+DC

NT631/NT631C side

Abbreviation

 

 

 

RDA (-)

 

 

 

TRM

 

 

RS-422A/

RDB (+)

485

 

SDA (-)

interface

 

 

 

SDB (+)

 

 

 

RSA (-)

 

 

 

RSB (+)

 

 

 

Functional

 

ground

 

RDA

TRM

RDB

SDA

SDB

RSA

RSB

24V

+DC

*Short TRM and RDA terminals of the NT631/NT631C at the end of the RS- 422A cable (* marked in the above figure) using the short-circuit tool sup- plied with the NT631/NT631C.

For details on handling shield wires, refer to 5-2-8 Handling the Shield on RS- 422A/485 Cables on page 125.

Connecting an NT631/NT631C and a Host

NT631/NT631C

Host

RS-422A

Wiring When Connecting a CS-series Serial Communications Board, CS/

C-series Serial Communications Unit, C-series C200HX/HG/HE(-Z)E

Communications Board, or CQM1H Serial Communications Board

Applicable Units:

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

CS1H-CPU63H/64H/65H/66H/67H

CS1D-CPU66H/67H (See note.)

C200HE-CPU32/42-(Z)E

C200HG-CPU33/43/53/63-(Z)E

C200HX-CPU34/44/54/64-(Z)E

120

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Omron manual Connecting between NT631/NT631C Units, Connecting an NT631/NT631C and a Host