Datalogic S70 Manual - Halaman 11

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Datalogic S70 Manual
2. SET Sensing Condition
Method
SET Button
Remote Input
3. Return to RUN Mode
Method
SET Button
Remote Input
Dark SET
•
Sets a threshold a programmable % offset above the presented condition
•
Any condition lighter than the threshold condition causes the output to change state
•
Threshold can be adjusted using "+" and "-" Navigation key (Manual Adjust)
•
Recommended for applications where only one condition is known, for example a stable dark background with varying lighter
targets
•
See
Program Mode
for programming the Offset Percent setting
NOTE: Offset Percent MUST be programmed to Minimum Offset to accept conditions of no signal (0 counts).
A single sensing condition is presented, and the sensor positions a threshold a programmable % offset above the presented condition.
When a condition lighter than the threshold is sensed, the output either turns ON or OFF, depending on the LO/DO switch setting
(see LO/DO Switch in
Top Panel
See
Troubleshooting
for more explanation of the % Offset displayed after the Light SET method.
13
Action
•
Present sensing condition
•
Click the SET Navigation key
•
Present sensing condition
•
Single-pulse the remote input
Action
Move Mode switch to RUN
No action required; sensor returns to RUN
mode automatically
Interface).
Sensor positions
threshold a programmable
% offset above the
presented condition
Output OFF
Condition
Darkest
Presented
(no signal)
Figure 7. Dark SET (Light Operate shown)
T
Threshold position
adjusted by
Manual Adjust
Output ON
Most Light
(saturated
signal)
11
Result
Threshold Condition Accepted
Displays read "Lt SEt" then alternate
"PASS" with % Offset 13 ; Sensor
returns to Adjust mode
Threshold Condition Not Accepted
Displays read "Lt SEt" then alternate
"FAIL" with minimum % Offset 13 for
sensing condition; Sensor returns to
Adjust mode
Result
Display: Red - Signal Level;
Green - Threshold