Connector pin-outs
6.2.5 Port C - RS422
These are standard DE9F (TIA-574)
sub-miniature (D-sub) sockets, conforming
to DIN 41652 and MIL-DTL-24308. They are
very widely available, as are suitable mating
connectors.
Pin
Function
1
RS422 TxD - (inverting)
2
RS422 TxD + (non-inverting)
3
Not connected
4
Not connected
5
Not connected
6
RS422 RxD - (inverting)
7
RS422 RxD + (non-inverting)
8
Not connected
9
Not connected
Wiring details for the compatible
plug, DE9M, as seen from the cable
end (i.e. during assembly).
Notes:
•
The idle voltage between pins 2 and 1 is greater than 0.2 V.
•
Maximum common-mode voltage is -7 V to +7 V
20
Issue C - March, 2018
