Siemens simatic ET 200MP Manual - Page 15

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Siemens simatic ET 200MP 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