Omron Programmable Terminals NT31 NT31C Manual de usuario Pagina 138

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5-2SectionConnecting to the Host’s RS-422A/485 Port
127
CS1H-CPU65-E(V1) CS1H-CPU66-E(V1)
CS1H-CPU67-E(V1)
C200HE-CPU32-(Z)E C200HE-CPU42-(Z)E
C200HG-CPU33-(Z)E C200HG-CPU43-(Z)E
C200HG-CPU53-(Z)E C200HG-CPU63-(Z)E
C200HX-CPU34-(Z)E C200HX-CPU44-(Z)E
C200HX-CPU54-(Z)E C200HX-CPU64-(Z)E
C200HX-CPU65-ZE C200HX-CPU85-ZE
CQM1H-CPU51 CQM1H-CPU61
1
14
13 25
NT31/NT31C side
Shielding wire
(25-pin type)
Abbreviation
FG
SD
RD
RS
CS
SG
TRM
RDB (+)
SDB (+)
SDA ()
RDA ()
RSB (+)
RSA ()
Pin number
Connector
hood
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
23
24
25
RS-232C/
422A/485
connector
6
5
9
1
RS-422A
connector
Pin number
Connector
hood
1
2
3
4
5
6
7
8
9
Abbreviation
FG
SDA ()
SDB (+)
RDA ()
RDB (+)
(9-pin type)
Next PT
PC (CPU) side
In order to avoid an FG ground loop, do not connect the functional ground of the
NT31/NT31C to the shielding of the RS-485A cable.
5-2-6 Recommended Connectors, Cables and Crimp Terminals
Connectors and Cables Recommended for RS-422A/485
When making an RS-422A/485 connecting cable, as far as possible use the rec-
ommended parts indicated in the table below. When using the memory link
method, however, use a connector that matches with the RS-422A port at the
CPU (CP) side. Some units come supplied with one connector and connector
hood.
Check the required parts and prepare them in advance.
Name Model Maker Remarks
XM2A-2501
25-pin type
Made by OMRON
Delivered with the following
units:
C500-LK203
Connector
DB-25P F-N
25-pin type
Made by JAE
Delivered with the following
units:
3G2A6-LK201-EV1
3G2A5-LK201-EV1
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