Technical data

Configuration
CPU 317T: Technology Functions
4-62 A5E00251798-03
4.5.8.2 Positioning and standstill monitoring
At the Axis > Monitoring functions dialog box, "Positioning and standstill
monitoring" tab, set the limit values for monitoring positioning of position-controlled
and synchronization axes.
The "Positioning and standstill monitoring" tab shows whether you set the
Positioning or Synchronism technology for the axis.
Positioning monitoring
At the end of a positioning motion, the function monitors the approach to the set
position. Define a positioning window and a time tolerance indicating the point in
time at which the end position must have been reached. Monitoring is enabled at
the end of setpoint value interpolation.
You can also set a minimum dwell time in the positioning window, which is to
expire before a positive feedback of the positioning command is received. This time
can be used for oscillating processes and control loops, for which the tolerance
window should be less than the overshoot amplitude.
A positive feedback of the positioning command is output when the actual value
reaches the positioning window.
When positioning monitoring is triggered, the axis technology DB indicates error
8019.
Standstill monitoring
Standstill monitoring is enabled when the position setpoint of a positioning
command is equal to the value at the destination position, and the delay time for
setting standstill monitoring.
Standstill monitoring is triggered when the axis moves out of the configured
standstill velocity tolerance window for any time longer than the configured time.
When standstill monitoring is triggered, the axis technology DB indicates error
8018.