Interrupt, error and system messages
9.1 PROFIBUS DP
ET 200M
Operating Instructions, 12/2008, EWA-4NEB780600602-08
189
Note
For more information on reading out diagnostics information, refer to the "SIMATIC software,
programming with STEP 7 V5.x.
(http://support.automation.siemens.com/WW/view/en/18652056
)" manual.
Example for reading the S7 diagnosis with SFC 13 "DPNRM_DG"
Here you will find an example of how to use the SFC 13 to read the slave diagnosis for a DP
slave in the
STEP 7
user program.
Assumptions
The following assumptions apply to this
STEP 7
user program:
● The diagnosis address of the ET 200M is 1022 (3FE
H
).
● The slave diagnosis should be stored in the DB 82:
as of address 0.0, length 64 bytes.
● The slave diagnosis consists of 64 bytes.
STEP 7 user program
STL Description
CALL SFC 13
REQ :=TRUE Read request
LADDR :=W#16#3FE Diagnosis address of the ET 200M
RET_VAL := MW 0 RET_VAL of SFC 13
RECORD :=P#DB82.DBX 0.0 BYTE 64 Data record for the diagnosis in the DB 82
BUSY :=M2.0 Reading process runs through several OB 1
cycles
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