Siemens SIMATIC ET 200AL Manuel de l'équipement - Page 22

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Siemens SIMATIC ET 200AL Manuel de l'équipement

5.2

Interrupts

The digital output module DQ 8x24VDC/2A 8xM12 supports diagnostics interrupts.

Diagnostic interrupt

The digital output module generates a diagnostic interrupt at the following events:

• Short-circuit of outputs to ground

• Load voltage 2L+ missing or too low

5.3

Diagnostics alarms

For each diagnostic event, a diagnostics alarm is issued and the DIAG LED flashes red on the

digital output module. You can read out the diagnostics alarms, for example, from the

diagnostics buffer of the CPU. You can evaluate the error codes with the user program.

Table 5- 4

Diagnostics alarm Error code

Short-circuit

Load voltage 2L+

missing*

* If you are using ET 200AL modules in connection with the ET 200SP distributed I/O system, the di-

agnostics alarm "Load voltage missing" is displayed.

Digital output module DQ 8x24VDC/2A 8xM12 (6ES7142-5AF00-0BA0)

Equipment Manual, 08/2021, A5E36683723-AB

Diagnostics alarms, their meanings and corrective measures

Meaning

Short-circuit of outputs to

ground

Load voltage 2L+ missing or too

low

Interrupts/diagnostic alarms

5.2 Interrupts

Remedy

•

Eliminate the short-circuit

•

Check the supply voltage

•

Check the module