MCV_GrpBackward

This FB causes the NC kernel to move backwards along the programmed path.

For further information on backward motion, see the functional description [FCT-C7].

Block diagram

FB parameters

VAR_IN_OUT

Variable name

Data type

Description

AxesGroup

AXES_GROUP_REF

Axis group reference

VAR_INPUT

Variable name

Data type

Description

Enable

BOOL

The axes move backward on the path as long as the input is TRUE.

VAR_OUTPUT

Variable name

Data type

Description

Valid

BOOL

TRUE indicates that backward motion is active.

Req

BOOL

Indicates that another function commanded backward motion e.g. a GUI.

This command only becomes active when it is applied to the “Enable” input of the FB.

State

BOOL

TRUE indicates that backward motion is activated.

Error

BOOL

Indicates TRUE when an error occurs.

ErrorID

UDINT

Error identifier