5
5
Chapter 5
Pin Assignments
The box header connector(s) on the module is used to connect to serial devices. Optional cables
are available that provide DB9 or DB25 connectors. The pin assignments of the box header
connectors and available cables are provided below.
Box Header Pin Assignments
RS-232
These pin assignments apply to the CB-108 and CB-114. Note that there are two 40-pin box
header connectors on the CB-108, each of which connects to 4 serial ports.
Pin Signal Pin Signal Pin Signal Pin Signal
1 DCD0
11 DCD1 21
DCD2
31
DCD3
2 DSR0
12 DSR1 22
DSR2
32
DSR3
3 RxD0
13 RxD1 23
RxD2
33
RxD3
4 RTS0
14 RTS1 24
RTS2
34
RTS3
5 TxD0
15 TxD1 25
TxD2
35
TxD3
6 CTS0
16 CTS1 26
CTS2
36
CTS3
7 DTR0
17 DTR1 27
DTR2
37
DTR3
8 --- 18 --- 28
--- 38
---
9 GND0
19 GND1 29
GND2
39
GND3
10 --- 20 --- 30
--- 40
---
RS-422, 4-wire RS-485
These pin assignments apply to the CB-114 and CB134I.
Pin
Signal
Pin
Signal
Pin
Signal
Pin
Signal
1 TxD0-(A) 11 TxD1-(A)
21
TxD2-(A)
31
TxD3-(A)
3 TxD0+(B) 13 TxD1+(B)
23
TxD2+(B)
33
TxD3+(B)
5 RxD0+(B) 15 RxD1+(B) 25 RxD2+(B) 35 RxD3+(B)
7 RxD0-(A) 17 RxD1-(A)
27
RxD2-(A)
37
RxD3-(A)
9 GND0 19 GND1 29
GND2 39
GND3
