Siemens SIMATIC FM 351 - Page 140

Diagnostics
11-14
FM 351 Positioning Module
C79000-G7076-C351-02
Address of the reporting
module (OB82_MDL_ADDR) =
Module address from channel DB
(MOD_ADDR) ?
Yes
Diagnostic interrupt
(OB82)
Note module address and
error codes from OB82 bytes 8–11
Note “diagnostic interrupt occurred” ID
(see also Figure 11–7)
Noted module address
from OB82 = module address
from current channel DB
(MOD_ADDR) ?
Yes
Error codes from OB82
Channel error
Other
Error
Specific reaction per channel
after evaluating the
diagnostic buffer
specific reaction for the
entire module
cyclic call
(e.g. OB1)
Exit OB82
or check
next
module
ID
”diagnostic interrupt occurred”
set ?
Yes
No
No
No
Figure 11-9 Possible Evaluation of a Diagnostic Interrupt