CP 503/A, CP 505/A,D,K, CP 507/
A,C
Connections and wiring
Project engineering manual V1.06
44
© KEBA 2021
6.7.4 Cable and plug specification
For details, refer to the system manual.
6.8 Serial interface
The module offers 1 configurable serial interface (X51A SI) at the front side,
which can be used in different modes. The mode can be set on the software
side.
6.8.1 RS-232-C interfaces
Via RS-232-C interface participants can comminicate by point-to-point con-
nection. The wire has to be shielded.
6.8.1.1 Pin assignment
Fig.6-31: Industrial Mini I/O socket type 2
RS-232-C
Pin-No. Signal designation Input/output
1 TxD Transmit Data Output
2 RTS Request To Send Output
3 RxD Receive Data Input
4 n.c. Not connected ---
5 n.c. Not connected ---
6 CTS Clear To Send Input
7 n.c. Not connected ---
8 GND Ground (Signal ground) ---
6.8.1.2 Bus termination
Information
The RS-232-C bus does not require bus termination.
To deactivate bus termination the DIP switch (S1) on the front of the module
is set (see "Serial interface configuration").