Omron E4C-UDA Instruction Manual page 8

3. Setting Threshold Values
1) Teaching settings
(1) Teaching with and without a workpiece
Set two points one with a workpiece and another without a workpiece to be respectively sensed, and set the point between
these two points as the threshold value. This setting can be made in both of the RUN and SET modes.
When this setting is made in the RUN mode, make sure that the "MODE key setting" function is set to [2PNT]. The default
setting is [2PNT]. Refer to "Function Transition Charts" in "5. Function Overview."
Operation
RUN
SET RUN
mode
Switch to the
operation
RUN mode.
SET
SET RUN
mode
operation
Switch to the
SET mode.
Display
(2) Teaching without a workpiece (background teaching)
Set the threshold value referenced to a state in which a workpiece is not present (background).
Set the threshold value 10% in front the sensing range width referenced to the distance in a workpiece absent state.
Example: In the case of a 50 to 300 mm type, set the threshold value about 25 mm in front.
Operation
SET RUN
Switch to the
SET mode.
Display
Workpiece
Workpiece present
More than
3 seconds
Hold down the MODE key
Hold down the MODE key
for more than 3 seconds.
for more than 3 seconds
Press the UP or Press the UP or
DOWN key. DOWN key.
TECH -
The preset threshold value
The sub-display flashes.
flashes twice.
No workpiece present
Press the UP or
DOWN key
TECH -
The sub-display flashes
No workpiece present
More than
3 seconds
SET
2PNT Threshold
value
More than
3 seconds.
Hold down the UP or DOWN
key for more than 3 seconds.
RFCT Threshold
value
The preset threshold
value flashes twice.
- 8 -
RUN
Switch to the
RUN mode.
SET RUN
Switch to the
RUN mode.