CPU module
3-6
Hardware - SIMADYN D
Edition 03.2001
Display
Operating- and error statuses
Display
can be
deleted
with key
E
Task administrator error:
•
cycle
error
a task was not able to be processed within the
sampling time
•
task
backup
if the task is not designated as a high-priority task,
and has to be re-started.
•
no free local buffer
the data buffer is no longer enabled. Task start is
skipped.
•
software
watchdog
if the base sampling time is not processed for four
consecutive times. The basic clock timer is re-
initialized with the configured base sampling time
and processing is continued.
yes
H
Fatal system error:
hardware or software problem which cause a program
crash:
Display:
•
flashing „H“: Fault/error on this module
•
steady „H“: Fault/error on another module
no
Additional information
on diagnostics refer to the Manual "SIMADYN D Basis Software for
D7-SYS".
The button has 2 functions:
•
Deleting the error display:
By depressing button S1, sporadic errors („E“) or non-critical errors („b“)
appearing in the display can be deleted.
If another error is present, this is displayed after the first has been
acknowledged.
•
Binary signal input with function block ASI
Resolution, 0.1 ms;
e. g. to time stamp messages
A plug-in socket for a 28-pin EPLD device is provided on the module
(ALTERA company) so that the user program can be copy-protected
(„Hardlock PAL“).
Using a special function block, this EPLD device can be checked and
program stopped if the code is missing or is incorrect.
Additional information on request.
Button S1
Real-time clock
Software
protection
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