Moeller XControl XC600, Hardware, Engineering And Function Description, Page: 68 / 78

Appendix
07/04 AWB2700-1428GB
64
Notes on XSoft
Task configuration
Multiple tasks can be configured. The tasks must be assigned with
differing priorities (numbers) to ensure that the tasks can be
uniquely identified.
Every task can be monitored with the aid of a watchdog:
X
Open the “Task configuration l Task properties” tab and
activate the watchdog.
X
Enter the monitoring time.
The sensitivity is a fixed setting of “1” even though the value can
be changed in the input field.
An event controlled task assumes a cyclically operating task. The
event, e.g. a variable of an external input, must be programmed in
the program of the cyclically running task. After each L
l H edge
of the input variable, the event controlled task of the program is
executed.
Lib files
The XSoft V2.3.2. contains new functions which are included in
the Lib files. The Lib files can be found in the
“Targets\Moeller\Lib_NTRT” directory. The description of the
function can be found in the “Dok\Deutsch\XsoftSysLibs”
directory.
Handling of physical operands
The physical operands, such as I,Q,M, cannot be declared as
RETAIN variables.
Other error messages
• Task monitoring
• Bus error
• Checksum error
• Fieldbus error
• I/O update error
• Cycle time exceeded
• Invalid instruction
• Access violation
• Privileg. instruction
• Page error
• Stack overflow
• Invalid disposition
• Array limit exceeded
• Division by zero
• Overflow
• Float div. by zero
The PLC messages are indicated with an error code: PLC: <xxx>
Meaning of error code <xxx>:
16 Task monitoring failed
17 Hardware monitoring failed
18 Bus error
19 Checksum error
20 Fieldbus error
21 I/O update failed
22 Cycle time for ... exceeded
80 Invalid instruction
81 Access violation
82 Privileged instruction
83 Page error
84 Stack overflow
85 Invalid disposition
86 Invalid access identification
87 Access to protected page
256 Access to odd address
257 Array limit exceeded
258 Division by zero
259 Overflow
260 Unavoidable exception
336 Floating point unit: general error
337 Floating point unit: unnormalised operand
338 Floating point unit: division by zero
339 Floating point unit: inaccurate result
340 Floating point unit: invalid instruction
341 Floating point unit: overflow
342 Floating point unit: stack check failed
343 Floating point unit: underflow