3
07.96
Description
3-28
6ZB5 430–0BH02–1AA0
Siemens AG 1996 All Rights Reserved
SINUMERIK 805SM / 840C (BS)
3.3.6
Diagnostics functions in the S5 program of the master
A STEP 5 program of the master can request and evaluate diagnostics
messages. The diagnostics function must be enabled in the ET 200 SYSTEM
PARAMETER screen form (Y) and a diagnostics address must be specified
(default diagnostics address: 252).
The diagnostics address is the address of the diagnostics word. If a fault
occurs, the slave stations send the diagnostics data to the IM 308-B master
interface module. The following functions are available for systematically
localizing and evaluating a fault:
Group diagnostics
Provides an overview of all types of faults that have occurred and detects
the first station with a fault.
Diagnostics “Parameter assignment and can be contacted”
Record all stations which have been parameterized and which can be con-
tacted.
Diagnostics “Overview”
Record all stations from which diagnostics data exist.
Station diagnostics
Evaluate station-specific messages concerning the type of fault.
Module diagnostics or I/O diagnostics
For ET 200U:
Localize defective module.
For ET 200K:
Localize defective input or output.
For IM 328–N:
Detect PLC STOP.
By combining different diagnostics, appropriate conclusions can be drawn
such as, for example, station with fault and can be contacted.
The two diagnostics bytes of the diagnostics word will be referred to as
DIAGNOSTICS ADDRESS (default: I/O byte 252) and DIAGNOSTICS
A1 (default: I/O byte 253).
Immediately after diagnostics is called in the STEP 5 program, the
diagnostics data are accessed and the diagnostics message is given in the
diagnostics word.
Diagnostics: Y
Diagnostics
address: 252
3.3 Description of the L2-DP slave up to V3.x