Siemens SIMATIC ET 200SP Manual - Page 18

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Siemens SIMATIC ET 200SP Manual
Connecting

3.2 Installation guidelines

Table 3- 2
RS422/485 connection
Terminal assignment of the
communication module
BaseUnit
Front view
Note
Ensure the power supply is disconnected before you wire the communication module.
Additional information
Information on connecting the modules can be found in the ET 200SP distributed I/O system
(http://support.automation.siemens.com/WW/view/en/58649293) system manual.
3.2
Installation guidelines
To take into consideration
The general installation guidelines must be taken into consideration (see function manual
EMC/EMI compatible installation of control systems
(http://support.automation.siemens.com/WW/view/en/59193566)).
The cable shield must be installed on a grounding rail to maintain the EMC values
(electromagnetic compatibility).
18
Pin
Designation
11
T (A) -
12
R (A) -
T(A)/R(A)
13
T (B) +
14
R (B) +
T(B)/R(B)
15+16
GND Ground
Input/output
Meaning
Output
Send data (four-wire mode)
Input
Receive data (four-wire mode)
Input/output
Receive/send data
(two-wire mode)
Output
Send data (four-wire mode)
Input
Receive data (four-wire mode)
Input/output
Receive/send data
(two-wire mode)
-
GND functional ground (isolated)
CM PtP communication module (6ES7137-6AA00-0BA0)
Manual, 01/2013, A5E03790792-01