Rockwell Automation 1769-BOOLEAN Compact I/O Module Reference Manual - Manual (Page 54)

Publication 1769-RM016A-EN-P - July 2006
54 Module Data, Status, and Configuration
Operators
The operators that are used in each output's Boolean expression are selected
from one of four possibilities. Each operator can be configured as one of the
supported logic functions (AND, OR, or XOR) or can be configured as none
(the operator is not used in the Boolean expression).
Each output's Boolean expression operators are configured using one word in
the configuration data file. For OUT0, Operator_1 is configured using bits 0
and 1 of word 12 while Operator_2 is configured using bits 4 and 5 of word
12. Configure the operators for OUT1 with word 20; for OUT2 use word 28;
and, for OUT3 use word 36. The following tables show the bit patterns to use
to configure the operators.
The default value for each operator is all 0's, which corresponds to an operator
selection of None.
Operator_1 Bit Patterns
Operator_1
Words 12,20,28,36
Operator
Bit 1 Bit 0
0 0 None
0 1 OR
1 0 AND
1 1 XOR
Operator_2 Bit Patterns
Operator_2
Words 12,20,28,36
Operator
Bit 5 Bit 4
0 0 None
0 1 OR
1 0 AND
1 1 XOR