Technical data

Assignment of Plugs and Sockets
CP 486 ⋅ 00/14 VIPA GmbH 41
3.4.2 Operation as RS485 Interface:
-
6
O
O
1
-
DTR
7
O
O
2
-
RxD-/TxD-
8
O
O
3
SEL
RTS
9
O
O
4
RxD+/TxD+
O
5
-
For RS485 operation only a two-wire line is terminated. The SEL-signal is used to switch over
among send and receive. A logic 1 (5V) switches to transmission and a logic 0 (0V) to receive.
SEL-signal can be controlled via DTR, via RTS or externally. This is selected via a jumper in the
plug. Pins signed with "-" are not used for the RS485 operation. They are not allowed to be
connected!