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Logic Function Blocks Section 3-3
3-3-3 OR
Basic Function An OR of the input signals will be output.
Diagram
General Description An OR of the input signals will be output.
Up to eight input signals can be evaluated.
Optional Input Setting The number of inputs can be increased on In/Out Setting Tab Page in the
function block property dialog box.
Truth Table
Truth Table for One-input
OR Evaluation
0: OFF, 1: ON
Truth Table for Two-input
OR Evaluation
0: OFF, 1: ON, x: Either ON or OFF
Truth Table for Three-input
OR Evaluation
0: OFF, 1: ON, x: Either ON or OFF
Truth Table for Four-input
OR Evaluation
0: OFF, 1: ON, x: Either ON or OFF
Default Maximum Number of Inputs
Parameter Setting range Default setting
Number of inputs 1 to 8 2
Input 1 Output 1
0 0
1 1
Input 1 Input 2 Output 1
00 0
1x 1
x1 1
Input 1 Input 2 Input 3 Output 1
000 0
1xx 1
x1x 1
xx1
1
Input 1 Input 2 Input 3 Input 4 Output 1
0000 0
1xxx 1
x1xx 1
xx1x 1
xxx1 1