Operation Setting For Incompletion Of Homing; Relevant Variables; Fbs That Can Be Started When Homing Is Incompletion; Homing Request Clear - Mitsubishi Electric MELSEC iQ-R Series User Manual

5.2

Operation Setting for Incompletion of Homing

The operation setting for incompletion of homing is provided to select whether the axis is started or not when the homing
request, AxisName.Md.Homing_Request is TRUE.
When starting the axis at homing incompletion, whether the axis can startup or not is determined by the executed FB and
AxisName.Pr.StartableAtUnhomed.
: Axis start possible, : Axis start impossible
FB

FBs that can be started when homing is incompletion

The motion FBs other than the above
*1 There may be restrictions in the operation for incompletion of homing depending on the setting or specifications of the drive unit. Refer
to each drive unit manual for details.

Relevant variables

Variable/Structure name
AxisName.Pr.
StartableAtUnhomed
AxisName.Md.
Homing_Request
AxisName.Cd.
Homing_ClearRequest
FBs that can be started when homing is incompletion
The following FBs can start the axis regardless of the AxisName.Pr.StartableAtUnhomed and AxisName.Md.Homing_Request
status.
FBs that can be started when homing is incompletion
MC_Home (Homing)
MCv_Jog (JOG operation)
MC_Stop (Forced stop)
MC_GroupStop (Group forced stop)
FBs other than the motion FBs
The axis start other than the above cannot start the axis when AxisName.Pr.StartableAtUnhomed is FALSE and
AxisName.Md.Homing_Request is TRUE, and the error "Start during Homing Incomplete" (error code: 1A22H) occurs.

Homing request clear

When AxisName.Md.Homing_Request is TRUE, AxisName.Md.Homing_Request can be turned to FALSE forcibly by turning
AxisName.Cd.Homing_ClearRequest to TRUE.

Precautions

• In AxisName.Cd.Homing_ClearRequest, when turning AxisName.Md.Homing_Request FALSE and starting the axis, it is
operated not based on the home position but based on the current coordinate system.
• Do not turn AxisName.Cd.Homing_ClearRequest TRUE during homing.
5 HOMING
170
5.2 Operation Setting for Incompletion of Homing
Start permission for incompletion of homing
"TRUE: Allowed" and the homing
request is TRUE
*1

*1

Name
Start permission at homing
uncompleted
Homing request
Homing request clear
"FALSE: Not allowed" and the homing
request is TRUE
*1


Details
Sets whether axis start when homing is incompletion is allowed or not.
TRUE: Allowed
FALSE: Not allowed
Turns TRUE when homing is required and turns FALSE when it is
completed. For details, refer to the following.
Page 166 Homing Request
Turns the homing request to FALSE forcibly.
After turning FALSE the homing request, FALSE is set in this variable
automatically.