Mitsubishi Electric MELSEC iQ-R Series User Manual page 36

When using an absolute position system
• This flag turns on in the following cases:
• When not executing a machine home position return even once after the system starts
• Machine home position return start (Unless a machine home position return is completed normally, the home position return request flag does not turn off.)
• When an absolute position data in the Motion module is erased due to a memory error, etc. (occurrence of the warning "Home position return data incorrect"
(warning code: 0D3CH))
• When the "Travel direction selection (PA14)" of servo parameter is changed
• The servo alarm "Absolute position erased" (alarm No.: 25) occurs. ([Md.108] Servo status1: b14 ON) (Page 486 Axis monitor data)
• The servo warning "Absolute position counter warning" (warning No.: E3) occurs. ([Md.108] Servo status1: b14 ON) (Page 486 Axis monitor data)
• When "Electronic gear numerator (PA06)", "Electronic gear denominator (PA07)", "Linear encoder resolution setting - Numerator (PL02)", or "Linear encoder
resolution setting - Denominator (PL03)" of the servo amplifier is changed
• When the drive unit object "HomeOffset (607CH)" is changed
• When a change of the servo amplifier or motor encoder is detected
• When a virtual servo amplifier is connected and MR-J5(W)-G was not the servo amplifier connected at the previous home position establishment
• This flag turns off by the completion of machine home position return.
When a home position return is not required
Control can be carried out ignoring the "home position return request flag" ([Md.31] Status: b3) in systems that do not require
a home position return.
In this case, the "home position return parameters ([Pr.43] to [Pr.55])" must all be set to their initial values or a value at which
an error does not occur.
Wiring the proximity dog
When using the proximity dog signal, wire the signal terminals corresponding to the proximity dog of the device to be used as
follows.
■External input signal of the servo amplifier
Refer to the manual of the servo amplifier to be used for details on signal input availability and wiring.
Refer to the following for settings of servo parameters when using the external input signal.
Page 315 External Input Signal Select Function
■External input signal via CPU (buffer memory of the Motion module)
Refer to the manual of the input module to be used for wiring.
Home position return sub functions
Refer to "Combination of Main Functions and Sub Functions" in the following manual for details on "sub functions" that can be
combined with home position return control.
MELSEC iQ-R Motion Module User's Manual (Startup)
Also refer to the following for details on each sub function.
Page 222 CONTROL SUB FUNCTIONS
[Remarks]
The following two sub functions are only related to machine home position return.
: Combination possible, : Restricted, : Combination not possible
Sub function name
Home position return retry function
Home position shift function
*1 When the driver home position return method is used, available functions depend on the specification of the servo amplifier. Confirm the
specification of the servo amplifier.
For details, refer to the manual of the servo amplifier to use.
MR-J5(W)-G: MR-J5 User's Manual (Function)
*2 The Motion module executes the home position return request to the servo amplifier regardless of the status of the proximity dog signal
or workpiece position. Depending on the specification of the home position return performed with the servo amplifier, the workpiece may
need to be moved before the proximity dog due to the positional relationship between them. Also, depending on the specification of the
servo amplifier, the JOG operation cannot be used for moving the workpiece before the proximity dog. Confirm the specification of the
servo amplifier for operation methods.
2 HOME POSITION RETURN CONTROL
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2.1 Outline of Home Position Return Control
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Machine home position return
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Fast home position return
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