Interrupts; Diagnostics Alarms - Siemens SIMATIC S7-1500 Manual

Interrupts/diagnostics alarms

5.2 Interrupts

5.2 Interrupts
Digital output module DQ 16x230VAC/2A ST supports diagnostic interrupts.
You can find detailed information on the event in the error organization block with the
"RALRM" instruction (read additional interrupt info) and in the STEP 7 online help.
Diagnostic interrupt
The module generates a diagnostic interrupt at the following event:
● Missing supply voltage L+
● Parameter assignment error
5.3

Diagnostics alarms

Diagnostics alarms
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
Parameter assignment
error
No load voltage
24
Error code Meaning
10 The module cannot evaluate parame-
H
ters for the channel
Incorrect parameter assignment
11 Supply voltage L+ of the module is
H
missing
Digital output module DQ 16x230VAC/2A ST Relay (6ES7522-5HH00-0AB0)
Corrective measures
Correct the parameter assignment
Connect supply voltage L+ to mod-
ule/channel
Manual, 07/2017, A5E34934019-AC