NT31C-ST143-EV3 Omron, NT31C-ST143-EV3 Datasheet - Page 138
NT31C-ST143-EV3
Manufacturer Part Number
NT31C-ST143-EV3
Description
5.7 8-Color Dsp,STN,Ivory,Eng
Manufacturer
Omron
Datasheet
1.NT31-ST123B-EV3.pdf
(313 pages)
Specifications of NT31C-ST143-EV3
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
- Current page: 138 of 313
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5-2-4
Connecting to the Host’s RS-422A/485 Port
1:N Connection among RS-422A Ports
Reference:
13
1
For details on handling shield wires, refer to 5-2-8 Handling the Shield on RS-
422A/485 Cables on page 128.
The connection method in which the RS-422A ports of multiple NT31/NT31Cs
and one host are connected in a 1:N connection is described here.
24V
DC PRINTERPORT B
• Communications using the RS-422A standard NT link (1:N) method is
25
14
possible only when a Serial Communications Board (CS Series only) or
Serial Communications Unit is installed in a CS/CJ-series PLC, a Com-
munications Board is installed in a C200HX/HG/HE(-Z)E, or a CQM1H-
SCB41 Serial Communications Board is installed in a CQM1H.
RS-232C/
422A/485
connector
NT31/NT31C side
(25-pin type)
NT31/NT31C
Abbreviation
−
RDB (+)
SDB (+)
RSB (+)
Max. 2 m
SDA (-)
RDA (-)
RSA (-)
TRM
FG
SD
RD
RS
CS
SG
−
−
−
−
−
−
−
−
−
RS-422A cables
(max. total length 500 m)
Pin number
Connector
hood
10
11
12
13
14
15
16
23
24
25
1
2
3
4
5
6
7
8
9
−
Relay terminal block
Serial port B
(RS-422A, 25-pin
type)
25-pin connector
Shielding wire
Connector
hood
Pin number
1
2
3
4
5
6
7
8
9
PLC (CPU Unit) side
(9-pin type)
Abbreviation
SDB (+)
RDB (+)
SDA (-)
RDA (-)
FG
−
−
−
−
−
RS-422A
connector
CPU Unit
9-pin connector
CS/CJ-series,
C200HX/HG/HE(-Z)E,
CQM1H PLC
Section 5-2
1
5
121
6
9
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