Jetter JC-120MC, Руководство пользователя

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352 Jetter AG
10 Programming
UserInput - Aborting the instruction
By writing value 0 to MR 2817, you abort an active STX instruction
UserInput() .
To abort an active STX instruction
UserInput()
, the controller proceeds as
follows:
Step Description
1 The controller disables the blinking cursor on the HMI.
2
The controller throws the exception USER_INPUT_BREAK .
3 If ... ... then ...
... an exception handling has been
programmed,
... the task proceeds with the
exception handling.
... no exception handling has been
programmed,
... the task is aborted and the error is
displayed in the error register.
Result:
The variable, which the result of the function is to be assigned to, will
not be changed.
UserInput status
This module register specifies the status of the UserInput() instruction.
By writing value 0 to MR 2817, you abort an active STX instruction
UserInput() .
Module register properties
Reading values 0 No UserInput active
1 UserInput active
Writing values 0 Aborting UserInput
Try
Value := UserInput ( 0 , 25 );
Catch USER_INPUT_BREAK:
Trace ( 'UserInput aborted !!' );
End_Try ;
Aborting the active
instruction
Operating principle
MR 2817
How to use this
instruction