Omron NT31 Setup Manual

90
Connecting to the Host’s RS-232C Port Section 5-1
Connection between
NT31/NT31C 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.
*2
Make the connection pin numbers 9 and 10 at the terminal NT31/NT31C
(marked * in the figure above).
For details on handling shield wires, refer to 5-2-8 Handling the Shield on RS-
422A/485 Cables on page 128.
∗
RS-485
NT31/NT31C
Host
1
14
13 25
1
1
4
13 25
∗
Shielding wire
(25-pin type) (25-pin type)
NT31/NT31C side
FG
−
SD
RD
RS
CS
−
SG
−
TRM
RDB (+)
RDB (+)
−
−
−
SDA (-)
RDA (-)
−
−
RSB (+)
RSA (-)
−
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
−
23
24
25
Abbreviation
Pin number
RS-232C/
422A/485
connector
Connector
hood
NT31/NT31C side
FG
−
SD
RD
RS
CS
−
SG
−
TRM
RDB (+)
RDB (+)
−
−
−
SDA (-)
RDA (-)
−
−
RSB (+)
RSA (-)
−
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
−
23
24
25
Abbreviation
Pin number
RS-232C/
422A/485
connector
Connector
hood

Omron NT31 Specifications

General

Brand	Omron
Model	NT31
Category	Touch terminals
Language	English