Omron DeviceNet DST1 Series Operation Manual page 37

1-4 Description of Safety Functions
Setting Dual Channel Mode and Discrepancy Time
The consistency between signals on two channels can be evaluated. Either of the
following settings can be selected. This function monitors the time during which there is
a discrepancy in the logic between the two channels set as dual channels. If the length
of the discrepancy exceeds the set discrepancy time (0 to 65,530 ms, in increments of
10 ms), the safety input data and the individual safety input status will turn OFF for both
inputs.
IMPORTANT
The following table shows the relation between terminal input and remote I/O data.
Dual channel mode
Dual Channel
Equivalent
Dual Channel
Complementary
1-14
The dual channel function is used with 2 consecutive inputs that start from
even input numbers: inputs 0 and 1, inputs 2 and 3, inputs 4 and 5, etc.
Input terminals
IN0
0
0
1
1
0
0
1
1
Remote I/O data
IN1 Safety input 0
0 0
1 0
0 0
1 1
0 0
1 0
0 1
1 0
Meaning of
data
Safety input 1
0 OFF
0 OFF
0 OFF
1 ON
1 OFF
1 OFF
0 ON
1 OFF