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Interrupts; Diagnostics Alarms - Siemens Simatic ET 200SP Manual

Analog input module ai 2xu st.
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Interrupts/diagnostics alarms

5.2 Interrupts

5.2
Interrupts
The AI 2×U ST analog input module supports diagnostics interrupts.
Diagnostics interrupts
The module generates a diagnostic interrupt at the following events:
● Short-circuit (voltage 1 V to 5 V)
● High limit violated
● Low limit violated
● Error
● Parameter assignment error
● Supply voltage missing
● Channel temporarily unavailable
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- 4
Diagnostics alarms, their meaning and corrective measures
Diagnostics alarm
Short-circuit (1 to 5 V)
High limit violated
Low limit violated
Error
Parameter assignment
error
Supply voltage miss-
ing
Channel temporarily
unavailable
22
Error code
Meaning
1
Short-circuit of input signal
H
Open input
7
Value is above the overrange.
H
8
Value is below the underrange.
H
9
Internal module error occurred.
H
10
The module cannot evaluate parame-
H
ters for the channel.
Incorrect parameter assignment.
11
Missing or insufficient supply voltage L+
H
1F
Firmware update is currently in progress
H
or has been canceled. The module does
not read process values in this state.
Solution
Correct interplay between module and
encoder
Connect input
Correct interplay between module and
encoder
Correct interplay between module and
encoder
Replace module
Correct the parameter assignment
Check supply voltage L+ on the
BaseUnit
Check BaseUnit type
Wait for firmware update.
Restart the firmware update.
Analog input module AI 2xU ST (6ES7134-6FB00-0BA1)
Manual, 12/2015, A5E36104728-AA

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