Interrupts/diagnostics alarms
5.2 Interrupts
Analog Input Module AI 4xI 2-/4-wire ST (6ES7134-6GD01-0BA1)
Equipment Manual, 06/2020, A5E03551866-AF
2
4
5.2
Interrupts
The analog input module AI 4xI 2-/4-wire ST supports diagnostics interrupts.
Diagnostics interrupt
The module generates a diagnostics interrupt for the following events:
●
Channel temporarily unavailable
●
Short-circuit (current, 2-wire transducer)
●
Wire break (current 4 to 20 mA)
●
Low limit violated
●
High limit violated
●
Error
●
Parameter assignment error
●
Supply voltage missing
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 how to deal with them
Diagnostics alarm
Error code Meaning
Solution
Short-circuit (2-wire
transducer, current)*
1
H
Sensor supply to ground
Correct the module/encoder tuning
Input to sensor supply
Wire break (current) ** 6
H
Impedance of encoder circuit too high.
Use a different encoder type or modify
the wiring, for example, using cables
with a larger cross-section
Wire break between the module and sen-
sor
Connect the cable
Channel not connected (open)
•
Disable diagnostics
•
Connect the sensor contacts
High limit violated
7
H
Value is above the overrange.
Correct the module/encoder tuning
Low limit violated
8
H
Value is below the underrange.
Correct the module/encoder tuning
Error
9
H
Internal module error occurred.
Replace module
Parameter assignment
error
10
H
•
The module cannot evaluate parame-
ters for the channel.
•
Incorrect parameter assignment.
Correct the parameter assignment
