Omron NE1A-SCPU01 - 2006 Operation Manual page 190

Command Reference: Function Blocks
Note
Set Parameters
Parameter
Input Type
(light curtain output)
Discrepancy Time
(light curtain output)
Input Type
(Override signal)
Discrepancy Time
(Override signal)
Max. Override Time
Muting Mode
Max Muting Time
Synchronization Time
(between Muting Signal
11 and Muting Signal 12
or between Muting Signal
21 and Muting Signal 22)
Note
In addition, the Muting function block has an override function to forcibly turn
ON the Output Enable signal without the condition for starting the muting
function being satisfied. (For example, when a detection object stops in the
light curtain's detection zone, the machine can be operated to remove the
detection object.)
Any of the following four muting functions can be selected.
Muting Mode
Parallel Muting with 2
This pattern is suitable for applications at a conveyor entrance.
Sensors Use this pattern when two Retro-reflective Photoelectric Sensors are
set up as the muting sensors with intersecting detection zones.
Sequential Muting This pattern is suitable for applications at a conveyor entrance.
(Forward Direction) Use this pattern when four Through-beam Photoelectric Sensors are
set up as the muting sensors.
Sequential Muting This pattern is suitable for applications at a conveyor entrance or exit.
(both directions)
Use this pattern when four Through-beam Photoelectric Sensors are
set up as the muting sensors.
Position detection This pattern is suitable for applications in which muting is controlled by
a switch input.
In the explanation above, the muting sensors are ON when detection is per-
formed and OFF when detection is not performed.
• Dual Channel Equivalent (NC/NC)
• Dual Channel Complementary (NC/NO)
10 to 500 ms in 10-ms increments (See note.)
A discrepancy time check will not be performed if 0 is set.
• Single Channel
• Dual Channel Equivalent (NO/NO)
• Dual Channel Complementary (NC/NO)
• Not used.
10 to 500 ms in 10-ms increments (See note.)
A discrepancy time check will not be performed if 0 is set.
500 ms to 127.5 s in 500-ms increments
Position detection
Parallel Muting with 2 Sensors
Sequential Muting (Forward Direction)
Sequential Muting (Both Directions)
500 ms to 127.5 s in 500-ms increments
0 to 500 ms in 10-ms increments
The muting time will be unlimited if 0 is set.
30 ms to 3 s in 10-ms increments (See note.)
The timer SV must be longer than the NE1A-series Controller's cycle time.
Application
Setting range
Section 6-5
Default setting
Dual Channel
Equivalent
30 ms
Not used.
30 ms
60 s
Parallel Muting
with 2 Sensors
60 s
3 s
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