Interrupts; Diagnostic Messages - Siemens DI 16x24VDC ST Manual

Interrupts/diagnostic alarms

5.2 Interrupts

5.2 Interrupts
The DI 16×24VDC ST digital input module supports diagnostic interrupts.
Diagnostics interrupts
The module generates a diagnostic interrupt at the following events:
● Wire break
● Parameter assignment error
● Supply voltage missing
● Channel temporarily unavailable
5.3

Diagnostic messages

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 Error code Meaning
Wire break 6
H
Parameter assign- 10
ment error
Supply voltage miss- 11
ing
Channel temporarily 1F
unavailable
20
Impedance of encoder circuit too high.
Wire break between the module and
sensor
Channel not connected (open)
The module cannot evaluate parame-
•
H
ters for the channel.
Incorrect parameter assignment.
•
Missing or insufficient supply voltage L+
H
Firmware update is currently in progress
H
or has been canceled. The module does
not read in process values in this state.
Solution
Use a different encoder type or modify the
wiring, for example, use cables with larger
cross-section
Connect the cable
Disable diagnostics
•
Connect a resistor of between 25 and
•
45 kOhms to the encoder contacts
Correct the parameter assignment
Check supply voltage L+ on the
•
BaseUnit
Check BaseUnit type
•
Wait for firmware update.
•
Restart the firmware update.
•
Digital input module DI 16x24VDC ST (6ES7131-6BH00-0BA0)
Manual, 12/2015, A5E03573442-AD