Rockwell Automation 440C Guardmaster 440C-CR30 Configurable Safety Relay User Manual - Manual (Page 76)

76 Rockwell Automation Publication 440C-UM001C-EN-P - November 2014
Chapter 10 Logic Levels A and B
Table 8 - AND Logic Table for Two Inputs
OR The OR block accepts 2…24 inputs. If any of the inputs are HI, the output of the
block is HI. If all inputs go LO, the output of the block goes LO.
The OR block is often used with enabling devices.
Figure 90 - OR Logic Block
Table 9 - OR Logic Table for Two Inputs
XOR The XOR block accepts 2…24 inputs. The output of the XOR block is HI when
any input is HI. The output is LO when multiple inputs are HI or if all inputs are
LO.
Figure 91 - XOR Logic Block
Table 10 - XOR Logic Table for Two Inputs
Input 1 Input 2 Output
0 0 0
0 1 0
1 0 0
1 1 1
Input 1 Input 2 Output
0 0 0
0 1 1
1 0 1
1 1 1
Input 1 Input 2 Output
0 0 0
0 1 1
1 0 1
1 1 0