Diagnostics Alarms - Siemens Simatic ET 200SP User Manual

Interrupts/diagnostics alarms

5.3 Diagnostics alarms

Diagnostic error interrupt
The module generates a diagnostic error interrupt at the following events:
● Channel temporarily unavailable
● Hardware interrupt lost
● Reference channel error
● Error
● Violation of low limit
● Violation of high limit
● Wire break
● Supply voltage missing
● Parameter assignment error
5.3 Diagnostics alarms
A diagnostics alarm is generated and the DIAG-LED flashes on the module for each
diagnostics event. You can read out the diagnostics alarms, for example, in the diagnostics
buffer of the CPU. You can evaluate the error codes with the user program.
Table 5- 5 Diagnostics alarms, their meaning and remedies
Diagnostics alarms
Wire break
Violation of high limit
1
Violation of low limit
1
Error
Parameter assignment
error
Supply voltage missing
40
Error code Meaning
6 Resistance of sensor circuit too high
H
Wire break between the module and sen-
sor
Channel not connected (open)
7 Value lies above the overrange.
H
8 Value lies below the underrange.
H
9 Internal module error has occurred (diag-
H
nostics alarm on channel 0 applies to the
entire module).
10 The module cannot evaluate parameters
H
for the channel.
Incorrect parameter assignment.
11 Missing or insufficient supply voltage L+
H
Solution
Use a different sensor type or modify
the wiring, for example, using cables
with larger cross-section
Connect the cable
Deactivate diagnostics
•
Connect or deactivate the channel
•
Correct module/sensor interplay
Correct module/sensor interplay
Replace module
Correct the parameter assignment
(wire break diagnostics only allowed
with the permitted measuring ranges).
Check supply voltage L+ on the
•
BaseUnit
Check BaseUnit type
•
Analog input module AI 4xTC HS (6ES7134-6JD00-0DA1)
Manual, 03/2019, A5E42405270-AB