Diagnostics Alarms - Siemens SIMATIC ET 200SP Manual

5.3

Diagnostics alarms

A diagnostics alarm is output for each diagnostics event and the DIAG LED on the
module flashes. The diagnostics alarms can, for example, be read from 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
Channel temporarily
unavailable
Short-circuit
(2-wire transducer,
current)*
Line break
(current)
High limit violated
Low limit violated
Error
Parameter assignment
error
No load voltage
Short-circuit of the encoder supply to ground and/or of the input signal to the encoder supply of a channel can have a
*
temporary effect on other channels (duration < 0.5 s). This means the short-circuit diagnostics can also be reported for
unaffected channels and/or the measured value can be affected temporarily.
Analog Input Module AI 4xI 2-/4-wire ST (6ES7134-6GD00-0BA1)
Manual, 07/2014, A5E03551866-AC
Error code Meaning
1F Firmware being updated. The module does
H
not perform any measurements during this
time.
1 Sensor supply to ground
H
Input to sensor supply
6 Impedance of encoder circuit too high.
H
Wire break between the module
and sensor
Channel not connected (open)
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
•
H
parameters for the channel.
Incorrect parameter assignment.
•
11 No or insufficient supply voltage L+
H
Interrupts/diagnostics alarms
5.3 Diagnostics alarms
Remedy
–
Correct the module/encoder tuning
Use a different encoder type or modify
the wiring, for example, using cables
with a larger cross-section
Connect the cable
Disable diagnostics
•
Connect the sensor contacts
•
Correct the module/encoder tuning
Correct the module/encoder tuning
Replace module
Correct the parameter assignment
Check supply voltage L+
•
on the BaseUnit
Check BaseUnit type
•
21