Siemens SIMATIC ET 200eco, Manual

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Commissioning and diagnostics
4-10
ET 200eco Distributed I/O Station
A5E00158716-02
Example of how to use FB 192 “IM308C” to read slave diagnostic data
This example shows you how to use SFC 192 to view diagnostics data of a DP
slave in the STEP 5 user program.
Assumptions
For this STEP 5 user program we shall assume that:
•
The DP master IM 308-C uses page frames 0 to 15 (Number 0 of IM 308-C).
•
The DP slave’s PROFIBUS address is ”3”.
•
Slave diagnostics data are to be written to DB 20. You can also use any other
DB.
•
Slave diagnostics data consists of 13 bytes.
STEP 5 user program
STL Explanation
:A DB 30
:SPA FB 192
Name :IM308C
DPAD : KH F800
IMST : KY 0, 3
FCT : KC SD
GCGR : KM 0
TYP : KY 0, 20
STAD : KF +1
LENG : KF –1
ERR : DW 0
Default address area of IM 308-C
IM ID = 0, PROFIBUS address of the DP slave = 3
Function: Read slave diagnostics data
not evaluated
S5 data area: DB 20
Diagnostic data starting at dataword 1
Diagnostic length = wildcard length (all permitted
bytes)
Error code written to DW 0 of DB 30