Siemens SIMATIC ET 200SP Manual page 61

Reactions to a diagnostic interrupt
The following happens when an event occurs that triggers a diagnostic interrupt:
● The DIAG LED flashes red.
When you have eliminated all errors, the DIAG LED stops flashing red and turns green.
● The S7-1500 CPU interrupts the processing of the user program. The diagnostic interrupt
OB (e.g. OB 82) is called. The event that triggered the interrupt is entered in the start
information of the diagnostic interrupt OB.
● The S7-1500 CPU remains in RUN, even if no diagnostic interrupt OB is present in the
CPU. The technology module continues working unchanged if this is possible despite the
error.
Detailed information on the error event can be obtained in the error organization block with
instruction "RALRM" (read additional interrupt information), in the information system of
STEP 7 and in the Diagnostics function manual
(https://support.industry.siemens.com/cs/ww/en/view/59192926), section "System
diagnostics by means of the user program".
If the module is being operated as a distributed module in an ET 200SP system with
PROFIBUS DP, you have the option of reading out diagnostic data with the RDREC or
RD_REC instruction using data record 0 and 1. For the structure of the data records, refer to
the product manual for the IM 155-5 DP ST interface module, which is available for
download on the Internet (https://support.industry.siemens.com/cs/ww/en/view/78324181).
Diagnostic messages
The diagnostics are displayed as plain text in STEP 7 (TIA Portal) in the online and
diagnostics view. You can evaluate the error codes with the user program.
The following diagnostics can be signaled:
Table 5- 6 Diagnostic alarms, their meaning and remedies
Diagnostic alarm Error
code
Error 9
H
Parameter as- 10
H
signment error
Load voltage miss- 11
H
ing
Technology Module TM Count 1x24V (6ES7138-6AA00-0BA0)
Manual, 02/2017, A5E33002339-AB
Meaning
Internal module error occurred
•
Possible cause: Technology module defec-
•
tive
The received parameter data record is
•
invalid
The configured BaseUnit is not the used
•
BaseUnit
Undervoltage
•
Supply voltage L+ of technology module
•
missing
Wiring of supply voltage L+ faulty
•
Interrupts/diagnostic messages
5.2 Diagnostic messages
Remedy
Replace technology module
Check parameter data record
•
Check BaseUnit
•
Check BaseUnit type
•
Check supply voltage L+ on the Ba-
•
seUnit
Check wiring of supply voltage L+
•
Check total consumption of the load
•
group
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