FB_BrakeControl

The FB_BrakeControl function block can be used to manually open or close the brake of a motor that is operated on Beckhoff servo hardware.

It should be noted that the brake is permanently closed or opened via "Lock" or "Unlock".

It is recommended to open or close the brake manually only for the necessary duration. The brake should then be set back to "Automatic" mode using the function block.

Supported Beckhoff hardware
AX5xxx	AX8xxx / AMP8xxx / MD8xxx	Compact drive technology (servo)
from FW v1.07 b0001	from FW v1.04 b0001	from FW v01 (EL72xx only with OCT and from FW v16)

Inputs

VAR_INPUT
    Execute : BOOL;
    Mode : E_BrakeMode;
END_VAR

Name	Type	Description
Execute	BOOL	The function block is enabled via a positive edge at this input.
Mode	E_BrakeMode	The mode with which the brake is controlled.

Inputs/outputs

VAR_IN_OUT
   Axis : AXIS_REF;
END_VAR

Name	Type	Description
Axis	AXIS_REF	Axis data structure that unambiguously addresses an axis in the system. Among other parameters it contains the current axis status, including position, velocity or error state.

Outputs

VAR_OUTPUT
    Busy : BOOL;
    Error : BOOL;
    ErrorID : UDINT;
END_VAR

Name	Type	Description
Busy	BOOL	This output is set when the function block is activated, and remains set until a feedback is received.
Error	BOOL	This output is set after the Busy output has been reset when an error occurs in the transmission of the command.
ErrorID	UDINT	In the event of a set error output returns the ADS error code.

Requirements

Development environment	Target platform type	PLC library
TwinCAT ≥4024.48	PC or CX (x86 or x64)	Tc2_MC2_Drive ≥V3.3.34.0