Siemens SIMATIC ET 200SP Manuel - 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

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.

Digital output module DQ 4x24VDC/2A HF (6ES7132-6BF20-0CA0)

Manual, 12/2015, A5E32855695-AC