Siemens SIMATIC ET 200SP Equipment Manual - Page 20

Browse online or download pdf Equipment Manual for Industrial Equipment Siemens SIMATIC ET 200SP. Siemens SIMATIC ET 200SP 44 pages. Distributed i/o system
Also for Siemens SIMATIC ET 200SP: Manual (40 pages), User Manual (21 pages), Manual (34 pages), Manual (48 pages), Manual (30 pages), Manual (34 pages), Product Information (38 pages), Manual (37 pages), Manual (36 pages), Manual (44 pages), Manual (31 pages), Manual (35 pages), Manual (23 pages), Configuration Manual (20 pages), Manual (34 pages), Manual (29 pages), Manual (33 pages), Manual (31 pages), User Manual (32 pages), Manual (31 pages), Manual (28 pages), Manual (41 pages), Manual (32 pages), Manual (49 pages), Manual (24 pages), Manual (34 pages), Manual (41 pages), Manual (30 pages), Manual (31 pages), Manual (27 pages), Manual (24 pages), Manual (24 pages), Manual (25 pages), Manual (49 pages), Manual (40 pages), Manual (38 pages), Manual (39 pages), Product Information (24 pages), Manual (32 pages), Product Information (10 pages), Equipment Manual (43 pages), Manual (33 pages), Original Operating Instructions (6 pages), Manual (35 pages), Manual (28 pages), Equipment Manual (32 pages), Manual (50 pages), Manual (30 pages), Manual (26 pages), Manual (28 pages), Manual (34 pages), Manual (44 pages), Manual (33 pages), Equipment Manual (42 pages), Original Instructions Manual (16 pages)

Print Page
Siemens SIMATIC ET 200SP Equipment Manual
Connecting

3.2 RS232 interface of the communications module

3.2
RS232 interface of the communications module
RS232 interface
The RS232 interface is a voltage interface used for serial data transmission.
The inputs and outputs are not isolated from each other. The inputs and outputs are
electrically isolated from the backplane bus.
Terminal assignment of the BaseUnit
Table 3- 1
RS232 connection
Terminal assignment of
the
BaseUnit of the communi-
cations module
Front view
20
Pin
Designation
1
TXD Transmit Data
2
RXD Receive Data
3
RTS Request To Send
4
CTS Clear To Send
5
DTR Data Terminal Ready
6
DSR Data Set Ready
7
DCD Data Carrier Detect
8
RI Ring Indicator
9
GND Ground
10
Input/output
Meaning
Output
Transmit data
Input
Receive data
Output
Request to send
Input
Clear to send
Output
Data terminal ready
Input
Data set ready
Input
Received signal level
Input
Incoming call
---
Shared ground reference
(ground)
CM PtP communications module (6ES7137-6AA01-0BA0)
Equipment Manual, 03/2021, A5E03790792-01