Siemens SIMATIC ET 200AL Manual - Page 35

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Siemens SIMATIC ET 200AL Manual
Interrupts/diagnostics alarms

5.3 Diagnostics alarms

5.3
Diagnostics alarms
A diagnostics alarm is output for each diagnostic event and the DIAG LED flashes red on the
analog input module. 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.
The following tables set out the diagnostics alarms for the set measuring range.
Table 5- 5
Diagnostics
alarm
Short-circuit
Wire break
High limit violat-
ed
Low limit violated 8
Error
Parameter error
Hardware inter-
rupt lost
34
Diagnostics alarms - for the measuring range: 1 V to 5 V, 2-DMU 4 mA to 20 mA and
4-DMU 4 mA to 20 mA
Error code
Meaning
1
Short-circuit encoder supply to
H
ground
6
Wire break between the module
H
and sensor
Channel not connected (open)
7
Value is above overrange.
H
Value is below underrange.
H
9
Value is significantly above or
H
below underrange/overrange.
10
Module parameter assignment is
H
faulty
16
At least one hardware interrupt
H
could not be signaled because
too many hardware interrupts are
pending.
Remedy
Correct interplay between mod-
ule and encoder
Connect the cable
•
•
•
Correct interplay between mod-
ule and sensor
Correct interplay between mod-
ule and sensor
Correct interplay between mod-
ule and sensor
Correct the parameter assign-
ment
Correct the program or the pro-
cess
Analog input module AI 4xU/I/RTD 4xM12 (6ES7144-5KD00-0BA0)
Deactivate diagnostics
Connect the channel
Deactivate channel
Manual, 08/2018, A5E32350124-AD