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6. Pinbelegung und Verdrahtung
RS-232/422/485 (DB9-Stecker) Pinbelegungen
PIN
RS-232
RS-485 (4-Leiter)
1
DCD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
---
Pinbelegung des Klemmenblocks (RS-422 / RS-485)
PIN
1
2
! "
#
3
4
5
DB9-Buchse auf DB9-Stecker
Male DB9
Female DB9
SE-
NPort IA
Converter
9 pins
Cable Wiring
DCD
1
RxD
2
TxD
3
DTR
4
GND
5
DSR
6
RTS
7
CTS
8
RS-422/
RS-485
(2-Leiter)
TxD-(A)
---
TxD+(B)
---
RxD+(B)
Data+(B)
RxD-(A)
Data-(A)
GND
GND
---
---
---
---
---
---
---
---
RS-485
RS-422/RS-485
2-Leiter
4-Leiter
---
TxD+(B)
---
TxD-(A)
Data+(B)
RxD+(B)
Data-(A)
RxD-(A)
GND
GND
Male DB9
Female DB9
RS-232
Device
9 pins
1
DCD
2
TxD
3
RxD
4
DSR
5
GND
6
DTR
7
CTS
8
RTS
- 6 -
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