ET 200S Distributed I/O System - Fail-Safe Modules
Installation and Operating Manual, 08/2008, A5E00103686-07
189
Diagnostic Data of Fail-Safe Modules
A
A.1 Einleitung
Introduction
This appendix describes the structure of diagnostic data in the system data. You need to
know this structure if you want to evaluate diagnostic data of fail-safe modules in the
standard user program.
Further Reading
The
System and Standard Functions
reference manual describes in detail the principles of
evaluating diagnostic data of F-modules in the standard user program and describes the
SFCs used for this.
A.2 Structure and Content of Diagnostic Data
SFCs for Reading out Diagnostic Data
The following SFCs are available for reading out diagnostic data of fail-safe modules in the
standard user program:
Table A- 1 SFCs for Reading out Diagnostic Data
SFC Number Identifier Application
59 RD_REC Reading out data records of S7 diagnostics (saved to the
data area of the standard user program)
13 DPNRM_DG Reading out slave diagnostic data (saved to the data area
of the standard user program)
Position in the Diagnostic Message Frame of the Slave Diagnostics
When fail-safe modules are being used in the ET 200S and a diagnostic interrupt occurs,
data records 0 and 1 are entered in the slave diagnostics of the ET 200 (= interrupt section).
The position of the interrupt section in the slave diagnostic data depends on the structure of
the diagnostic message frame and on the length of the channel-specific diagnostics.
A detailed description of the structure of the diagnostic message frame and the position of
the interrupt section in accordance with the PROFIBUS standard is available in the
"Commissioning and Diagnostics" chapter of the
ET 200S Distributed I/O System
operating
instructions.
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