Omron Programmable Terminals NT31 NT31C - Manual (Page 95)

4-1 Section Connecting to the RS-232C Port at the Host
84
Serial Port B
Prepare the adapter cable while referring to the following diagram.
1 14
13 25
NT31/NT31C
FG
CS
RS
RD
SD
TRM
–
–
SG
–
–
SDA (–)
RDA (–)
–
RDB (+)
SDB (+)
–
–
–
RSB (+)
RSA (–)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
–
23
24
25
–
(25-pin type)
RS-232C
/422A/485
connector
Abbreviation Pin number
Connector
hood
Shielding wire
RS-232C
connector
Abbreviation
Connector
hood
SD
RD
RS
CS
SG
PC (Host link unit)