Hardware description
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Pinning RS-232
RS-232
Pin
Signal
Description
1
DCD
Data Carrier Detect
2
RXD
Receive signal
3
TXD
Send signal
4
DTR
Data Terminal Ready
5
ISO_GND
Ground (reference potential)
6
DSR
Data Set Ready
7
RTS
Request to Send
8
CTS
Clear to Send
9
RI
Ring Indicator
Table 6: RS-232 D-Sub
Pinning RS-422
RS-422
Pin
Signal
Description
1
Tx‑
Send signal negative
2
Tx+
Send signal positive
3
Rx‑
Receive signal negative
4
Rx+
Receive signal positive
5
ISO_GND
Ground (reference potential)
6
n.c.
-
7
n.c.
-
8
n.c.
-
9
n.c.
-
Table 7: RS-422 D-Sub
Pinning RS-485
RS-485
Pin
Signal
Description
1
Rx/Tx‑
Send/receive signal negative
2
Rx/Tx+
Send/receive signal positive
3
n.c.
-
4
n.c.
-
5
ISO_GND
Ground (reference potential)
6
n.c.
-
7
n.c.
-
8
n.c.
-
9
n.c.
-
Table 8: RS-485 D-Sub
netFIELD OnPremise | User manual
DOC200901UM02EN | Revision 2 | English | 2021-06 | Released | Public
© Hilscher 2021