Omron Programmable Terminals NT631C - Manual (Page 106)

89
Connecting to the Host’s RS-232C Port Section 5-1
Connection between
NT631/NT631C Units (RS-
485) The relay terminal board is not included in the figure below. Insert a relay ter-
minal board so as to achieve the wiring configuration indicated below.
* Short TRM and RDA terminals of the NT631/NT631C at the end of the RS-
485 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 NT-AL001 and Host
Wiring when connecting a CS-series Serial Communications Board, CS/
CJ-series Serial Communications Unit, CQM1H Serial Communications
Board, or C-series C200HX/HG/HE(-Z)E Communications Board
Applicable Units:
:
RS-485
NT631/NT631C
Host
:
NT631/NT631C side
RDA
TRM
RDB
SDA
SDB
RSA
RSB
24V
+DC
RDA
TRM
RDB
SDA
SDB
RSA
RSB
24V
+DC
Shielding wire
Short-circuit tool
NT631/NT631C side
NT-AL001
Abbreviation
RDA (-)
TRM
RDB (+)
SDA (-)
SDB (+)
RSA (-)
RSB (+)
Abbreviation
RDA (-)
TRM
RDB (+)
SDA (-)
SDB (+)
RSA (-)
RSB (+)
RS-422A/
485
terminal
block
Functional
ground Functional
ground
RS-422A/
485
terminal
block
CS1W-SCU21(-V1)
CJ1W-SCU21(-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-CPU65H/67H (See note.)
RS-232C
NT631/NT631C Host
NT-AL001