Omron G9SP Series Reference Manual page 71

Safety Device Function Blocks
Diagram
General Description
Startup
Set Parameters
Optional Output
Setting
Fault Present Output
Setting
Truth Tables
Default
The Light Curtain Monitoring function block monitors a type-4 safety light cur-
tain.
The Output Enable signal will turn ON if the input from the safety light curtain
being monitored is active. The Output Enable signal will turn OFF if the input
is inactive or if an error is detected for the function block.
All errors are turned OFF and timers are reset at the start of operation. Out-
puts are turned ON or OFF according to the input status.
Parameter
Input type Dual Channel Equivalent
Dual Channel Complementary
Discrepancy time 0 to 30 s in 10-ms increments
A discrepancy time check will not be per-
formed if 0 is set.
The timer SV must be longer than the cycle time.
The following error output can also be used in programming. To enable this
optional output, select the check box on the Output Point Tab Page of the
function block properties dialog box.
• Discrepancy Error
Fault Present output can also be used in programming.
To enable this output, select the Fault Present check box on the Output Point
Tab Page of the function block properties dialog box.
Setting: Dual Channel Equivalent
Input 1 Input 2
(NC) (NC)
0 0
0 1
1 0
1 1
0: OFF, 1: ON
Setting: Dual Channel Complementary
Input 1 Input 2
(NC) (NO)
0 0
0 1
1 0
1 1
0: OFF, 1: ON
Maximum Number of Outputs
Setting range
Output
Enable
0
0
0
1
Output
Enable
0
0
1
0
Section 3-5
Default setting
Dual Channel Equivalent
30 ms
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