Owner's manual

4-70 System Configuration and Setup
Table 4-10 Height Sensor Setup Options
Command Description
Height Sensor
Type
Height Sensor Type
: Select the Height Sensor type from the list. If there is no Height
Sensor installed, select (none).
Probe Toggle Delay
: Probe Toggle Delay applies only to the Tactile (RT) Height
Sensor. The amount of time (in milliseconds) that FmXP waits before checking the
state of the Height Sensor probe. The default value is 100 ms. Commands are
executed so quickly in FmXP, that FmXP may check to see if the Height Sensor has
been activated before the probe has fully lowered.
Laser Always On
- Applies to all laser height sensors. When enabled, the height
sense laser remains on at all times. Turning the laser on and off for short periods of
time may affect accuracy. Laser height sensors are more stable and accurate after a
warm up time of 30 minutes or more. Note: Does not apply to the Tactile (RT)
Height Sensor.
Mode
Height sense always
: This mode guarantees an accurate dispense gap and is
beneficial in instances in which a substrate may be warped. The Height Sensor
probe is always down. Dispense height is established during setup.
No height sense - ask on every workpiece
: You are asked at the beginning of each
workpiece to teach the dispense height by lowering the needle to the desired
dispensing height. This command is only available if no height sensor is present.
No height sense - ask on first workpiece only
: This option is excellent for both batch
and conveyorized dispensing systems. You are asked to teach the dispensing height
on the first workpiece only. The information is used on all subsequent workpieces.
This command is only available if no height sensor is present.
No height sense - use last known substrate height
: A dispensing height is
established during setup. This information is used for all dispensing. This command
is only available if no height sensor is present.
Single height sense on first workpiece only
: You are asked to teach the dispensing
height on the first workpiece only. The information is used for all subsequent boards
of that run.
Selective height sense
: During setup, you have the option to define an area in which
one height sense is taken. If the dispensing head travels outside of that defined area,
another height sense is taken. This mode is ideal for workpieces requiring a variety
of dispense heights.
Height sense on command
: Allows you to include a Find Substrate Height command
in your program, which performs a height sense at a taught location on the
workpiece. A Height Sense Off command is ignored in this mode.
Batch height sens
e: The On Command mode must be selected to use this option.
When this option is enabled, the dispensing system performs and stores data from
all programmed height senses prior to starting the dispensing operation.
Keep probe lowered
: Applies only to the Tactile (RT) Height Sensor. If checked, the
height sense probe is not retracted after each height sense. This is used for Batch
Height Sensing to do repeated height sensing without the delay added by probe
retract time.