
B-63364EN/03 5. SETTING AND REGISTERING DATA FOR EACH CNC MACHINE
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F_ISCHG Interface:
F_ISCHG(Cell position)
Description:
At the data on the cell specified by the argument, when the value
acquired at this time is different from the value acquired at previous
sampling, this function returns TRUE.
Otherwise, and the argument is not a numerical value, this function
returns FALSE.
In case that the sampling interval is set long, this function may not
return the correct value. Refer to "5.1.2 Setting the Monitor Data
Sampling Interval" for the relation between the sampling interval
and the monitoring data.
Example:
The cell F6 has the monitoring data of machine signal in the bit type,
and you want to get the change state for the logging data output, set
the following condition formula to the "Condition".
= F_ISCHG(F6)
5. Order of registering the monitoring item and the logging output item
In case that one monitoring item refers the value acquired from other
monitoring item between multiple monitoring items with the conditions, it
is necessary that the referred monitoring item is registered before the
referring one.
Monitor item N Condition 1
Monitor item N+1 *****************
Monitor item N+2 Condition 2(depends on the value of monitoring
item N)