Mitsubishi Electric MELSEC iQ-FX5 User Manual page 628

Item
Servo alarm/warning
[Md.108] Servo status 1
[Md.119] Servo status 2
[Md.500] Servo status 7
Programming tool
Servo input axis type
*1 Set as the unconnected status during amplifier-less operation.
*2 When using an absolute position system (ABS), "3: Servo command value" or "4: Feedback value" of the servo input axis type cannot be
used. If it is set, the current value of the servo input axis might be not restored correctly. Therefore, set "1: Feed current value" or "2:
Actual current value" before using.
Precautions during control
■Absolute position system (ABS)/Incremental system (INC)
Set the ABS/INC setting correctly according to the connected stepping motor driver.
For the INC setting, the restriction is shown below.
• When the power of the Simple Motion module is turned off and on again, "[Md.20] Feed current value" is undefined.
■Home position return
The method and some operation of the home position return using the AlphaStep/5-phase differ from those of the home
position return using the servo amplifier.
• Home position return method that can be used
: Possible, : Not possible
[Pr.43] Home position return method
Proximity dog method
Count method 1
Count method 2
Data set method
Scale origin signal detection method
Driver home position return method
*1 The error "Home position return method invalid" (error code: 1979H) occurs and home position return is not performed.
• Driver home position return method
The following shows an operation outline of the home position return method "Driver home position return method".
The home position return is executed based on the positioning pattern set in the AlphaStep/5-phase. Set the setting values of
home position return in the parameters of the AlphaStep/5-phase. The operation of home position return and "[Pr.22] Input
signal logic selection" of the parameters ([Pr.116] FLS signal selection, [Pr.117] RLS signal selection, and [Pr.118] DOG signal
selection) depend on the specification of the AlphaStep/5-phase, so that refer to the AlphaStep/5-phase manual and match
the settings. For parameters that can be set by the Simple Motion module, refer to the following.
Page 349 Setting items for home position return parameters
This method is not available except for the stepping driver. If the method is executed, the error "Home position return method
invalid" (error code: 1979H) occurs.
APPENDICES
626
Appendix 2 Compatible Devices with SSCNETIII(/H)
AlphaStep/5-phase
Alarm codes/warning codes detected by
AlphaStep/5-phase and operation error codes
during driver home position return method are
stored in "Servo alarm/warning".
b0: READY ON
b1: Servo ON
b7: Servo alarm
b12: In-position
b13: Current cutback
b14: Absolute position lost

b9: Driver operation alarm
MR Configurator2 is not available.
Use AlphaStep/5-phase data editing software.
Setting possible (Restrictions
Possible/Not possible
*1

*1



*1


MR-J4(W)-B
Alarm codes/warning codes detected by servo
amplifier are stored in "Servo alarm/warning".
b0: READY ON
b1: Servo ON
b2, b3: Control mode
b4: Gain switching
b5: Fully closed loop control switching
b7: Servo alarm
b12: In-position
b13: Torque limit
b14: Absolute position lost
b15: Servo warning
b0: Zero passage
b3: Zero speed
b4: Speed limit
b8: PID control

MR Configurator2 is available.
*2
) Setting possible