Omron NX-SID Series User Manual page 107

Single/Dual
Single Channel
• Relationship between Input Signals to Safety Input Terminals and Safety Input Data for
Dual-channel Inputs
Single/Dual
Dual Channel Equiv-
alent
Dual Channel Com-
plementary
n = Even number
*1. If the terminals are set to Dual Channel Mode, the safety program in the Safety CPU Unit must access the
safety input data for the even-numbered terminal.
• Relationship between Safety Mat Status and Safety Input Data for Safety Mat/Safety Edge Inputs
Single/Dual
Safety Mat/Safety Edge
n = Even number
*1. If the terminals are set to Dual Channel Mode, the safety program in the Safety CPU Unit must access the
safety input data for the even-numbered terminal.
• Operation for Single Channel: Normal Operation
Safety input terminal
Safety input data
I/O indicator (yellow)
I/O indicator (red)
NX-series Safety Control Unit User's Manual (Z930)
Input signal on the
safety input terminals
Si (x)
0
1
Input signals on the
safety input terminals
Si (n) Si (n+1)
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
Safety mat/safety edge
status
Without load
With load
OFF ON
3 Part Names and Functions
Safety input data
Si (x)
0 Inactive (OFF)
1 Active (ON)
Safety input data
Si (n) Si (n+1)
0 Inactive (OFF)
*1
0
0 Discrepant status
*1
0
Discrepant status
0 *1
0
1 Active (ON)
*1
0
Discrepant status
0 *1
0
0 Inactive (OFF)
*1
0
1 Active (ON)
*1
0
Discrepant status
0 *1
0
Safety input data
Si (n) Si (n+1)
1 Active (ON)
*1
0
0 Inactive (OFF)
*1
0
OFF
Meaning of status
Meaning of status
Meaning of status
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