Chapter 6 Instruction Details
XBC E-Type Main Unit 6-40 Ve r. 1
6.9.3 OR, OR NOT, ORP, ORN
Instruction
Step
P M K F L T C S Z D.x
R.x
U N D R
S O O O O O O O O - O O - O - - - 1/2 - - -
S O O O O O O O O - O O - O - - - 2 - - -
1) OR, OR NOT
(1) OR is 1 contact’s A contact parallel-connected instruction, and OR NOT is B contact parallel-connected
instruction.
(2) OR or OR NOT operation of previous operation result and specified contact (S) is regarded as its result.
2) ORP, ORN
(1) ORP is A contact parallel-connected instruction at Rising Pulse, and ORN is B contact parallel-connected
instruction at Falling Pulse.
(2) When applicable contact changes, in other words, when ORP is at Rising Pulse and ORN is at Falling Pulse,
OR or OR NOT operation of previous operation result and specified contact (S) is regarded as its result.
3) Program Example
(1) If one input condition between P020 and P021 contacts is On, P061 is Output.
[Ladder Program] [Mnemonic Program]
(1) OR/OR NOT Instruction if used with index formula increases the number of steps by 1.
Bit device’s contact / Word device’s bit contact
0 LOAD P00020
1 OR P00021
2 OUT P00022
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