Siemens simatic et200sp - Interrupts

Interrupts/diagnostic alarms
13.2 Interrupts
Analog input module AI Energy Meter 480VAC ST (6ES7134-6PA20-0BD0)
Manual, 12/2015, A5E36061895-AA
87
13.2
Interrupts
The AI Energy Meter ST analog input module supports hardware and diagnostic interrupts.
13.2.1
Hardware interrupts
Hardware interrupts
The module generates a hardware interrupt at the following events:
● Violation of low limit 1 to 16
● Violation of high limit 1 to 16
You can find detailed information on the event in the hardware interrupt organization block
with the "RALARM" (read additional interrupt information) instruction and in the STEP 7
online help.
The module channel that triggered the hardware interrupt is entered in the start information
of the organization block. The following figure shows the assignment of the local data double
word 8 by the start information of the hardware interrupt organization block.
Image 13-2 Start information of the organization block
Structure of the additional interrupt information
Table 13- 5 Structure of the additional interrupt information
Data block name
Contents
Comment
Bytes
Identifier
W#16#0001 to W#16#FFFF
ID of the measured value for limit monitoring
2
Number of the limit (1 to 16), which has triggered the hardware interrupt
Channel
B#16#00 to B#16#0F
Number of the limit
1
Event that triggered the hardware interrupt.
Event
B#16#03
Violation of low limit
1
B#16#04
Violation of high limit