Omron SYSMAC C20K Operation Manual page 74

Work Bits (Internal Relays)
Reducing Complex
Conditions
0000
0002
0003
0112
0112
0004
0112
0006
0007
62
Work bits can be used to simplify programming when a certain combination
of conditions is repeatedly used in combination with other conditions. In the
following example, IR 0000, IR 0001, IR 0002, and IR 0003 are combined in
a logic block that stores the resulting execution condition as the status of IR
0112. IR 0112 is then combined with various other conditions to determine
output conditions for IR 0100, IR 0101, and IR 0102, i.e., to turn the outputs
allocated to these bits ON or OFF.
0001
0004 0005
0005
Address Instruction
0000 LD
0112
0001 AND NOT
0002 OR
0003 OR NOT
0004 OUT
0005 LD
0006 AND
0007 AND NOT
0008 OUT
0100
0009 LD
0010 OR NOT
0011 AND
0101
0012 OUT
0013 LD NOT
0014 OR
0015 OR
0016 OUT
0102
Section 4-8
Operands
0000
0001
0002
0003
0112
0112
0004
0005
0100
0112
0004
0005
0101
0112
0006
0007
0102