Reaction To Switching The S5-95U For The First Time From Stop To Run - Siemens SIMATIC S5 Manual

S5-95U – starting ET 200
12.3.1 Reaction to switching the S5-95U for the first time from STOP to
RUN (programmable controller startup)
Switching on
power supply and
S5-95U
Table 12-1 Reaction to switching the S5-95U for the first time from STOP to RUN
Preconditions
S5-95U as DP
master
STOP You cannot access the inputs/outputs of the distributed I/O system.
STOP RUN Diagnostics data, DP inputs and outputs are cleared.
Diagnostics data and DP inputs are updated
DP outputs are written DP outputs are written
DP outputs are set to defaults (if you programmed the startup OB 21).
You can access the inputs/outputs of the distributed I/O system.
12-6
The table below shows you how the ET 200 distributed I/O system responds
when you switch on the power supply of the S5-95U and the S5-95U for the
first time.
PS S5-95U
S5-95U as DP master
Reactions
ET 200 Distributed I/O System
DP slaves
Outputs are set to
"0". "0"
Inputs are read
Outputs are
updated updated
EWA 4NEB 780 6000-02a