Mitsubishi Electric WS0-CPU0 Operating Manual page 149

Table 45:
Truth table for the Binary
encoder function block with
2 inputs in One out of N
mode
Input 8 Input 7 Input 6 Input 5 Input 4 Input 3 Input 2 Input 1
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 1
0 1 0
1 0 0
Table 47:
Truth table for the Binary
encoder function block with
2 inputs in Priority mode
Logic programming – Function blocks
Priority-to-binary (input 1 dominant)
In this mode, all outputs are set to Low, if input 1 is High, regardless of the other inputs.
If input 1 is Low, the function block behaves as in Priority mode. If all inputs are Low
at the same time, all outputs are set to Low and Fault present becomes High.
Truth tables for the Binary encoder function block
The following applies for the truth tables in this section:
 "0" means logic Low.
 "1" means logic High.
 "x" means "any" = "0" or "1".
Input 2 Input 1
0 0
0 1
1 0
1 1
0 0 0
0 0 0
0 0 0
0 0 1
0 1 0
1 0 0
0 0 0
0 0 0
0 0 0
More than one input = 1
Table 46:
Truth table for the Binary encoder function block with 8 inputs in One out of N mode
Input 2 Input 1 Output A
0 0
0 1
1 x
Fault
Output A
present
0 1
0 0
1 0
0 1
Output
C
0 0 0
0 1 0
1 0 0
0 0 0
0 0 0
0 0 1
0 0 1
0 0 1
0 0 1
0
Fault
present
0 1
0 0
1 0
Chapter 9
Output Output Fault
B A present
0 0 1
0 0 0
0 1 0
1 0 0
1 1 0
0 0 0
0 1 0
1 0 0
1 1 0
0 0 1
146