Diagnostics Alarms - Siemens DQ 16x24VDC/0.5A HF User Manual

Interrupts/diagnostics alarms

5.3 Diagnostics alarms

5.3 Diagnostics alarms
Diagnostics alarms
A diagnostics alarm is generated and the ERROR LED flashes for each diagnostics event on
the module. You can read the diagnostics alarms, for example, in the diagnostics buffer of
the CPU. You can evaluate the error codes with the user program.
If the module is operated distributed with PROFIBUS DP in an ET 200MP system, you have
the option to read out diagnostics data with the instruction RDREC or RD_REC using data
record 0 and 1. The structure of the data records is available on the Internet in the "Manual
for interface module IM 155-5 DP ST (6ES7155-5BA00-0AB0)".
Table 5- 5 Diagnostics alarms, their meaning and corrective measures
Diagnostics alarm
Short circuit to ground
Wire break*
Parameter assignment
error
Load voltage missing
Limit value warning
* Wire break is also reported for short-circuit of actuator supply to L+. This can lead to inappropriate diagnostics for redun-
dant load control.
28
Error code Meaning
1 Short-circuit or overload at the chan-
H
nel
6 Actuator circuit impedance too high.
H
Wire break between the module and
actuator
Channel not connected (open)
10
The module cannot evaluate pa-
•
H
rameters for the channel.
Incorrect parameter assignment
•
11 Supply voltage L+ of the module is
H
missing
17 The configured limit for switching
H
cycles has been exceeded.
Corrective measures
Check the wiring/actuator. Check
the ambient temperature.
Use different actuator type or wire
differently, e.g. use lines with bigger
cross-section
Connect the cable
•
•
Correct the parameter assignment
Connect supply voltage L+ to mod-
ule/channel
•
•
Digital output module DQ 16x24VDC/0.5A HF (6ES7522-1BH01-0AB0)
Disable diagnostics
Connect a resistor to the actuator
contacts in the load resistance
range
Replace actuator as a precaution-
ary measure
Reset counter with DS131
Manual, 06/2018, A5E35683409-AC