Station Status (Station Status 3 And Master Address) - Siemens SIMATIC ET 200C Manual

Fault Diagnostics with the IM 308-B
Station Status Diagnostics, Continued
Request Station
The STEP 5 program is programmed as follows:
Status 3 and
Master Address
STL
L KY n,1
T PW 252
L PW 252
L KH 0001
!=F
BEB
SPB FBx
Structure:
Following request of station status 3 and the master address (code = 1), the
Diagnostics Word
diagnostics word has the following structure:
"Station Status 3
and Master
Address"
Figure 7-5
7-16
Explanation
In the "Diagnostics address" byte,
the number of the slave station (n =
station nuumber) which requests the
master address is to be stored; in
the "Diagnostics address + 1" byte,
the code for the "Station status 3
and master address" (code = 1) is to
be stored.
Load diagnostics word
Station number of the master = 1?
No fault?
Evaluate fault in FBx.
Diagnostics word "Station status 3 and master address, code = 1"
Diagnostics address
"Station status 3"
7 6 5 4 3 2 1 0
Irrelevant
Structure of the Diagnostics Word after Requesting the Station Status
(Station Status 3 and Master Address)
Diagnostics address + 1
"Master address"
7 6 5 4 3 2 1 0
Address of the master which
parameterized the slave station
ET 200C Distributed I/O Station
EWA 4NEB 812 6119-02b