AbbLCon3 (FB)

FUNCTION_BLOCK AbbLCon3 IMPLEMENTS IAbbLCon3

State machine for level controlled function blocks

InOut:

Scope

Name

Type

Initial

Comment

Input

Enable

BOOL

FALSE

A rising edge (Enable = TRUE) starts a single operation, the output Busy goes to TRUE. All other inputs are read and considered continuously. A falling edge (Enable = FALSE) aborts the operation, if BUSY=TRUE (Note: During Aborting the Busy is still TRUE). Afterwards all outputs will be reset. For executing another operation the Enable input needs to be retriggered by another rising edge!

Output

Done

BOOL

FALSE

Operation is completed without error (while outputs Busy and Error are FALSE). This output is TRUE for at least one cycle or until Enable is set to FALSE.

Busy

BOOL

FALSE

Operation is running (while outputs Done and Error are FALSE)

Error

BOOL

FALSE

Operation is stopped with error (while outputs Busy and Done are FALSE). This output is TRUE for at least one cycle or until Enable is set to FALSE. The output ErrorID gives more details about the error.