Connecting; Rs422/485 (X27) Interface Of The Communication Module - Siemens SIMATIC S7-1500 Manual

Connecting

3.1

RS422/485 (X27) interface of the communication module

Terminal assignment
The table below shows the terminal assignment for the 15-pin sub D female connector in the
front panel of the communication module.
Table 3- 1 Terminal assignment for the 15-pin sub D female connector of the integrated interface of the communication
module
RS422/485 female
*
connector
* View from the front
CM PtP RS422/485 BA communication module (6ES7540‑1AB00‑0AA0)
Manual, 01/2013, A5E03777484-01
Pin Designation
1 -
2 T (A) -
3 -
4 R (A)/T (A) -
5 -
6 -
7 -
8 GND
9 T (B) +
10 -
11 R (B)/T (B) +
12 -
13 -
14 -
15 -
Input/output Meaning
- -
Output Send data (four-wire mode)
- -
Input Receive data (four-wire mode)
Input/output Receive/send data (two-wire mode)
- -
- -
- -
- Functional ground (isolated)
Output Send data (four-wire mode)
- -
Input Receive data (four-wire mode)
Input/output Receive/send data (two-wire mode)
- -
- -
- -
- -
3
15