The XCx Multi-Tasking System
Operating Manual XCx 300 / 500 / 540 Version 09/08
93
No.
Name
Event
Actions
cold or warm start
SPG 19 BOUNDS_ERR
Is executed if the limits of an
array or a structure are
exceeded. Is only executed if
the 'Index-Prüfung' ['Index
check'] or 'Feldbegrenzungs-
Prüfung' ['Array limit check']
checkbox in the 'Ressource ...
einrichten' [Resource ... Set up]
dialog in MULTIPROG was
activated.
User tasks are deactivated
All outputs are updated
The close function of the I/O driver
is executed
PLC switches to 'STOP' state
SPG 20 BUS_ERR
Is executed if variables with a
data type
2 bytes and uneven
addresses were used or an
internal error has occurred in
MULTIPROG. Only on Motorola
platforms.
User tasks are deactivated
All outputs are updated
The close function of the I/O driver
is executed
PLC switches to 'STOP' state
SPG 21 STRING_ERR
Is executed if an error has
occurred in a character string
operation, e.g. if one character
string is to be replaced by
another, but cannot be found.
The behaviour of a character string
exception has changed! In the
standard setting SPG 21 is called
after a character string exception
has occurred. An entry with the
module number and line number is
also made in the error catalog. The
PLC remains in 'RUN' status.
System tasks are not monitored by the watchdog.
