
B-63364EN/03 5. SETTING AND REGISTERING DATA FOR EACH CNC MACHINE
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5.1.2 Setting the Monitor Data Sampling Interval
The Machining Status Monitor Package obtains, from a CNC machine, the data
for the monitor items registered on the monitor and log item registration sheet
to output log data. It is possible to set the time interval at which the data to be
monitored from the CNC machine. The same time interval is applied to all
monitor data received from the CNC machine.
NOTE
If the sampling interval of the monitoring data is set short, more accurate
data can be acquired from correspondence CNC machine. However, if so,
more CPU time is consumed and other applications do not work properly.
It is not guaranteed the sampling of the monitoring data is executed every
specified sampling interval. The sampling interval might be longer than the
specified value when some processes which require the heavy CPU power
are executed on the Machining Status Monitor Package or other
applications.
In case of monitoring the standing up and down of the machine signals, it is
not possible to acquire the correct monitoring data if the time between the
standing up and down of the signal is shorter than the sampling interval of
the monitoring data.
Sampling interval
When the monitoring is done like as above, standing up and down of the
signal cannot be detected.
For the Ethernet version, the real sampling interval might be longer than the
specified one according to the condition of the Ethernet communication
traffic, so it is not guaranteed the sampling of the monitoring data is
executed every specified sampling interval.
In the following condition, the number of machine signals to be acquired is
about twenty.
CPU: Pentium 166MHz
The sampling Interval: 1 sec.
The condition of Ethernet connection: one PC + one CNC
When the sampling time is over, an error log is output (Only first occurring).
Set the appropriate interval according to the operating environment and use.