Siemens SIMATIC S5 ET 200U - 2.1 Design of the ET 200 U Interface Module

2-2
ET 200U Distributed I/O Station
EWA 4NEB 812 6087–02b
2.1 Design of the ET 200U Interface Module
 “RUN” LED (green)
This LED lights up when the ET 200U interface module is in the
RUN mode (STOP/RUN switch in the “RUN” position and power
supply switched on)
 “BUS–FAULT” LED (red)
 “IM–FAULT” LED (red)
 STOP/RUN switch
 SINEC L2–DP interface
 Terminals for 24 V supply and functional earth
 Switch for setting the station number and
S the baud rate of the I/O bus (... 8MB11) ( Section 4.2.1)
or
S DP Siemens / DP Standard characteristics (... 8MB12)
( Section 5.2.1) or
S Switching from FMS to DP Standard bus parameters and vice
versa
(... 8MC11) ( Section 6.2).
 Field for station number labels
 Plug connector for connection of a bus unit
The LED indications are described in detail in the following Sections:
S ET 200U(DP Standard) in Section 4.3.1,
S ET 200U(DP Standard) in Section 5.3.1,
S ET 200U(DP Standard/FMS) in Section 6.4.
Technical Description