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Sequence Instructions
3
SEQUENCE PROGRAMMING
Functions
(1) ANDs blocks A and B and uses the resultant value as an operation result.
(2) The symbol of ANB is not a contact symbol but a connection symbol.
(3) ANB can be written up to seven instructions (eight blocks) consecutively.
If ANB is written consecutively more than the above, the PLC cannot perform
normal operation.
(1) ORs blocks A and B and uses the resultant value as an operation result.
(2) ORB connects in parallel the ladder blocks of two or more contacts. Use OR or
ORI to connect in parallel the ladder blocks of only one contact.
(3) The symbol of ORB is not a contact symbol but a connection symbol.
(4) ORB can be written up to seven instructions (eight blocks) consecutively.
If ORB is written consecutively more than the above, the PLC cannot perform
normal operation.
ANB
ORB
Coding