Condition Flags in Omron PLC Programming like P_on, P_Eq

Published: 22 April 2020
on channel: plc software

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Condition Flags

The Condition Flags include the Error Flag, Carry Flag, and other flags that indicate the results of

In earlier PLCs, these flags were in

the Auxiliary Area.

The Condition Flags are specified with global symbols, such as P_CY and P_ER, rather than
addresses. These flags cannot be written directly from instructions or CX-Programmer.
All Condition Flags are cleared when the program switches tasks, so the status of the Error Flag,Access Error Flag, and other flags are maintained only in the task in which the error occurred.

The Condition Flags cannot be force-set and force-reset.

Error Flag

Access Error Flag

Carry Flag

Greater ThanFlag

Equals Flag

Less Than Flag

Negative Flag

Overflow Flag

Underflow Flag

Greater Than or Equals Flag

Not Equal Flag

Less Than or Equals Flag

Always ON Flag

Always OFF Flag

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