Figure 7-1 Diagnostics With Cpu 41Xh - Siemens SIMATIC S7-400H System Manual

PROFIBUS DP
7.1 CPU 41x–H as PROFIBUS DP master
DP master Block or tab in STEP 7
SFC 51 "RDSYSST"
SFB 52 "RDREC"
SFB 54 "RALRM"
Evaluating diagnostics data in the user program
The figure below shows how to evaluate the diagnostics data in the user program.
Figure 7-1
92
Application
Readout of system status lists (SSL). Call
SFC 51 in the diagnostic interrupt using the
SSL ID W#16#00B3 and read out the SSL of
the slave CPU.
Reading data records of S7 diagnostics, i.e.
saving them to the data area of the user
program
Readout of interrupt information within the
associated interrupt OB
Diagnostics with CPU 41xH
See ...
System Manual, 03/2012, A5E00267695-11
S7-400H