Allen-Bradley LOGIX 5000 Reference Manual page 314

Chapter 2 Drives
314
Function Block
Tip: For the HMIBC tag, use only the Out parameter, and optionally, the ProgFB
parameter in Function Block diagrams.
Structured Text
HMIBC (HMIBC tag)
Operands
These operands are located on the instruction.
Operand Type
HMIBC tag HMIBC
HMIBC Structure
Input parameter
EnableIn
Prog FB
Output parameter Data Type
EnableOut BOOL
Button State BOOL
Rockwell Automation Publication 1756-RM006K-EN-P - November 2018
Format Description
tag Goes active when the data bit is set
Data Type Description
BOOL Enable input. If false, the instruction does not
execute.
BOOL Program Feedback. This value is not processed by the
instruction, but transmitted to all registered HMI
devices. The purpose or meaning of this value is user
defined. For example, use this to determine if the
expected action actually executes when pressing the
button and displays that status on the HMI device.
Description
Indicates if instruction is enabled.
Cleared to false when no registered HMI device
buttons are pressed.
Set to true when at least one registered HMI button
is pressed.
Default value is false.