Siemens SIMATIC ET 200M Manual page 124

Example of Displaying the Slave Diagnosis with FB 192 "IM308C"
Here you will find an example of how to use the FB 192 to display the slave
diagnosis for a DP slave in the STEP 5 user program.
Assumptions
The following assumptions apply to this STEP 5 user program:
S The IM 308-C is assigned pages 0 to 15 (number 0 of the IM 308-C) as the DP
master.
S The DP slave has the PROFIBUS address 3.
S The slave diagnosis is to be stored in DB 20. However, you can also use any
other data block for this.
S The slave diagnosis consists of 29 bytes.
STEP 5 User Program
STL
:A DB 30
:JU FB 192
Name :IM308C
DPAD : KH F800
IMST : KY 0, 3
FCT : KC SD
GCGR : KM 0
TYPE : KY 0, 20
STAD : KF +1
LENG : KF –1
ERR : DW 0
Distributed I/O Device ET 200M
EWA-4NEB780600602-06
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Commissioning and Diagnostics
Description
Default address area of the IM 308-C
IM No. = 0, PROFIBUS address of DP slave = 3
Function: Read slave diagnosis
Not evaluated
S5 data area: DB 20
Diagnostic data from data word 1
Diagnosis length = joker length (all permissible
bytes)
Error code stored in DW 0 of DB 30
6-15