ET 200pro Distributed I/O System - Fail-Safe Modules
Operating Instructions, 05/2007, A5E00394073-02
141
Diagnostic Data of Fail-Safe Modules
A
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.
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 (storing in data
area of the standard user program)
13
DPNRM_DG
Reading out slave diagnostics (storing in data area of the
standard user program)
Position in the Diagnostic Frame of the Slave Diagnostics
When fail-safe modules are being used in the ET 200pro and a diagnostic interrupt occurs,
data records 0 and 1 are entered in the slave diagnostics of the ET 200pro (= interrupt
section).
The position of the interrupt section in the slave diagnostics depends on the structure of the
diagnostic frame and the length of the channel-specific diagnostics.
You will find a detailed description of the structure of the diagnostic frame and the position of
the interrupt section in accordance with the PROFIBUS standard in the section on
"Commissioning and Diagnostics" in the
ET 200pro Distributed I/O System Manual.
