Siemens SIMATIC ET 200SP Manual - Page 24

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Interrupts/diagnostics alarms

5.2 Interrupts

5.2
Interrupts
The DQ 4×24VDC/2A HF digital output module supports diagnostics interrupts.
Diagnostics interrupts
The module generates a diagnostic interrupt at the following events:
● Short-circuit
● Wire break
● Parameter assignment error
● Supply voltage missing
● Channel temporarily unavailable
Detailed information on the event is available in the STEP 7 online help.
5.3

Diagnostics alarms

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.
Note
You can connect 2 actuators per output.
The diagnostics of the two actuators influenced each other in the case of duplicate wiring.
This means:
• a wire break is only signaled if both actuators are affected
• a single short-circuit affects both actuators
Note
Parallel connection of two outputs
For parallel connection of two outputs for redundant control of a load, the channel
diagnostics "Short-circuit to L+" and "Wire break" must be deactivated.
24
Digital output module DQ 4x24VDC/2A HF (6ES7132-6BF20-0CA0)
Manual, 12/2015, A5E32855695-AC