Read Station Status - Siemens SIMATIC S5 ET 200U Manual

ET 200U(DP Siemens): AddressAssignment,Starting–Up,Diagnosing Faults Using COMET200
Request Station
The bytes "station status 1 to 3" give information on the station. In the "mas-
Status ter address" byte, the address of the master station, which has parameterized
the slave station is indicated.
L KY n,0
T PW 252
L KY n,1
T PW 252
The IM 308–B then writes the diagnostics message into the I/O word "diag-
nostics address".
Read Station Sta-
tus
L KH 0004
or
L KH 0000
L PW 252
!=F
BEC
JU FBx
ET 200U Distributed I/O Station
EWA 4NEB 812 6087–02b
The number of the slave station (n = station number) of
which the station status is requested must be stored in the
"diagnostics address" byte; in the "diagnostics address + 1"
byte, the code for "station status 1 and station status 2"
(= 0) has to be stored
or
"Station status 3 and master address" (= 1)
If code = 0
or
If code = 1 and master station number = 1
Load diagnostics word
No fault?
Evaluate fault in FBx.
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