Interrupt, Error, And System Messages; Interrupts Of Et 200Eco Pn - Siemens SIMATIC ET 200eco PN Operating Instructions Manual

Interrupt, error, and system messages

7.1

Interrupts of ET 200eco PN

Introduction
The IO Device generates interrupts as a reaction to specific error events. Interrupts are
evaluated depending on the IO Controller used.
Evaluating interrupts using an IO Controller
The ET 200eco PN supports the following interrupts:
● Diagnostics interrupts
● Maintenance interrupts
In the event of an interrupt, interrupt OBs are executed automatically in the CPU of the IO
Controller (refer to the System Software for S7-300/400 System and Standard Functions
(http://support.automation.siemens.com/WW/view/en/1214574) Manual, chapter "Program
design").
Information on the cause and class of the error is already available based on the OB number
and start information.
You can obtain detailed information on the error event in the error OB by calling SFB 54
RALRM (read supplementary interrupt information).
Triggering diagnostics interrupts
After having detected an incoming or outgoing event (e.g., wire break), the device triggers a
diagnostic interrupt for "Group diagnostics", if enabled, and for "Diagnostics for the relevant
channel".
The CPU interrupts the processing of the user program and processes the diagnostics block
OB 82. The event which led to the triggering of the interrupt is entered in the start information
of OB 82.
ET 200eco PN
Operating Instructions, 08/2016, A5E01250250-AJ
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