Siemens Simatic S7-1500 Manual - Halaman 21

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Interrupts/diagnostics alarms

5.2 Interrupts

5.2

Interrupts

Digital output module DQ 8x230VAC/5A ST supports diagnostic interrupts.

Diagnostic interrupt

The module generates a diagnostic interrupt at the following event:

● Missing supply voltage L+

For more information on the error event, refer to the error OB with the "RALRM" instruction

(read additional interrupt info) and to the STEP 7 Online Help.

5.3

A diagnostics alarm is output for each diagnostics event and the ERROR LED flashes on the

module. The diagnostics alarms can, for example, be read from 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- 4

Diagnostics alarms, their meaning and corrective measures

Diagnostics alarm

Load voltage missing

Error code

Meaning

Supply voltage L+ of the module is

missing

Corrective measures

Connect supply voltage L+ to mod-

ule/channel

DQ 8x230VAC/5A ST Digital Output Module (6ES7522-5HF00-0AB0)

Manual, 07/2014, A5E03485590-AC