A.2 Structure And Content Of Diagnostic Data - Siemens SIMATIC ET 200S Installation And Operating Manual

Diagnostic Data of Fail-Safe Modules

A.2 Structure and Content of Diagnostic Data

A.2 Structure and Content of Diagnostic Data
A.2
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
SFC Number
59
13
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 200S (interrupt section).
The position of the interrupt section in the slave diagnostics depends on the structure of the
diagnostic message frame and the length of the channel-related 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
Data Records 0 and 1 of the System Data
The diagnostic data of a module can be up to 40 bytes long and is located in data records 0
and 1 of the system data area:
• Data record 0 contains 4 bytes of diagnostic data describing the state of the F-module
• Data record 1 contains
Description
The structure and content of the individual diagnostic data bytes are described below.
In general, the following applies: If a fault occurs, the corresponding bit is set to "1".
A-2
SFCs for Reading out Diagnostic Data
Identifier
RD_REC
DPNRM_DG
– the 4 bytes of diagnostic data of the F-module that are also in data record 0 and
– up to 36 bytes of channel-related diagnostic data depending on the F-module (see
Channel-Related Diagnostics from Byte 8"
"
Application
Reading out data records of S7 diagnostics (storing in data
area of the standard user program)
Reading out slave diagnostics (storing in data area of the
standard user program)
Distributed I/O System ET 200S
).
ET 200S Distributed I/O System - Fail-Safe Modules
Hardware Installation and Operating Manual, 07/2005, A5E00103686-04
manual.