Structure Of Station Diagnostics And Module Diagnostics - Siemens SIMATIC S5 ET 200U Manual

ET 200U(DP Standard): AddressAssignm.,Starting–Up, DiagnosingFaultsUsing COM ET 200
Structure and Re-
The station status, the station diagnostics and the identifier–related diagnos-
quest of Station tics (module diagnostics) are described in this manual as they are typical for
Diagnostics for
the ET 200U slave station.
ET 200U
The diagnostics function is loaded and transferred:
L KY (Station number),(code) Station number: 3 to 124
T PW 252
16 bytes per slave station are reserved for station status, station diagnostics
and module diagnostics. The 16 bytes are organized in 8 words. They are
structured as follows:
Table 5-12 Structure of Station Diagnostics and Module Diagnostics
Note
If a module signals diagnostics, a delay of up to 150 ms is possible between
input into the station diagnostics and the following input into the identifier–
related diagnostics.
ET 200U Distributed I/O Station
EWA 4NEB 812 6087–02b
Code Diagnostics Address
0 Station status 1
1 Station status 3
2 Manufacturer identification
3 Header
4 Header
5 Identifier–related diagnostics
(module diagnostics)
(slots 8 to 15)
6 Identifier–related diagnostics
(module diagnostics)
(slots 24 to 31)
7 Unassigned
Code: 0, ..., 7
Afterwards the station diagnos-
tics is transferred into the "diag-
nostics address" byte (here I/O
byte 252)
Diagnostics Address + 1
Station status 2
Master address
Station diagnostics
Identifier–related diagnostics
(module diagnostics)
(slots 0 to 7)
Identifier–related diagnostics
(module diagnostics)
(slots 16 to 23)
Unassigned
Unassigned
5-33