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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 CA-108/CB-108, CA-114/CB114, and CA-104. Note that there are two
40-pin box header connectors on the CA-108/CB108, each of which connects to 4 serial ports.
Pin
1
2
3
4
5
6
7
8
9
10
RS-422, 4-wire RS-485
These pin assignments apply to the CA-132, CA-132I , CA-114/CB-114, and CA-134I/CB1341. With regard to
the CA Series, pins 21 to 40 apply to the CA-114 and CA-134I only.
Pin
1
TxD0-(A)
3
TxD0+(B)
5
RxD0+(B)
7
RxD0-(A)
9
Signal
Pin
DCD0
11
DSR0
12
RxD0
13
RTS0
14
TxD0
15
CTS0
16
DTR0
17
---
18
GND0
19
---
20
Signal
Pin
11
13
15
17
GND0
19
6.
Signal
Pin
DCD1
21
DSR1
22
RxD1
23
RTS1
24
TxD1
25
CTS1
26
DTR1
27
---
28
GND1
29
---
30
Signal
Pin*
TxD1-(A)
21
TxD1+(B)
23
RxD1+(B)
25
RxD1-(A)
27
GND1
29
Pin Assignments
Signal
Pin
DCD2
31
DSR2
32
RxD2
33
RTS2
34
TxD2
35
CTS2
36
DTR2
37
---
38
GND2
39
---
40
Signal*
Pin*
TxD2-(A)
31
TxD2+(B)
33
RxD2+(B)
35
RxD2-(A)
37
GND2
39
6
Signal
DCD3
DSR3
RxD3
RTS3
TxD3
CTS3
DTR3
---
GND3
---
Signal*
TxD3-(A)
TxD3+(B)
RxD3+(B)
RxD3-(A)
GND3
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