Moxa CP-118EL-A User Manual Page 85

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PCI Express Boards Pin Assignments
5-13
Device Side Pin Assignments
Male DB9 (CBL-M44M9x4-50)
Pin RS-232
RS-422 & 4-wire
RS-485
2-wire RS-485
1
DCD
TxD-(A)
---
2
RxD
TxD+(B)
---
3
TxD
RxD+(B)
Data+(B)
4
DTR
RxD-(A)
Data-(A)
5
GND
GND
GND
6
DSR
---
---
7
RTS
---
---
8
CTS
---
---
9
---
---
---
Male DB25 (CBL-M44M25x4-50)
Pin RS-232
RS-422 & 4-wire
RS-485
2-wire RS-485
2
TxD
RxD+(B)
Data+(B)
3
RxD
TxD+(B)
---
4
RTS
---
---
5
CTS
---
---
6
DSR
---
---
7
GND
GND
GND
8
DCD
TxD-(A)
---
20
DTR
RxD-(A)
Data-(A)
22
---
---
---
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