Commissioning and Diagnostics
5-25
ET 200X Distributed I/O Device
EWA 4NEB 780601602-06
5.5.1 Module interrupts (STEP 7)
You can assign parameters to diagnostic and hardware interrupts for modules
having analog inputs with STEP 7.
For
modules with analog outputs
EM 142 DO 4 DC 24V/2A (6ES7 142-1BD40-0XB0)
PM 148 DO 4 DC 24V/2A
BM 143-DESINA and EM 143-DESINA
BM 141 DI 8 DC 24V ECOFAST DIAG and EM 141 DI 8 DC 24V DIAG
it is possible to configure diagnostic interrupts.
Triggering a diagnostic interrupt
With a coming or going event – for example, wire break fault – the module triggers
a diagnostic interrupt if the ”enable diagnostic interrupt” parameter has been
assigned.
Table 5-14 Events that can trigger diagnostic interrupt
Event
EM 142
DO 4
DC 24V/2A
Module
with ana-
log
inputs
Module
with ana-
log
outputs
BM
143-DE-
SINA
BM 141 DI
8 DC 24V
ECOFAST
DIAG
PM 148
DO 4
DC 24V/2A
EM
143-DE-
SINA
EM 141 DI
8 DC 24V
DIAG
Configuration/
parameter
assignment error*
Yes Yes Yes Yes Yes
Wire break Yes Yes Yes Yes Yes
Short-circuit to M Yes Yes Yes No Yes
Short circuit to L+ Yes No No No No
Lower limit violation No Yes No No No
Upper limit violation No Yes No No No
Rising edge No No No No Yes
Falling edge No No No No Yes
* MAINS OFF/MAINS ON for the ET 200X is required following rectification of the
configuration/parameter-assignment error.
The CPU interrupts the processing of the user program and processes the
diagnostic interrupt block (OB 82). The event that led to the interrupt is entered in
the start information of OB 82.
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