Mitsubishi Electric MELSEC Q Series Programming Manual page 99

3 POSITIONING DEDICATED SIGNALS
(4) Minor error code storage register (D6+20n) ............. Monitor device
(a) This register stores the corresponding error code (Refer to APPENDIX 1.2.)
at the minor error occurrence. If another minor error occurs after error code
storing, the previous error code is overwritten by the new error code.
(b) Minor error codes can be cleared by an error reset command (M3207+20n).
(5) Major error code storage register (D7+20n) ............. Monitor device
(a) This register stores the corresponding error code (Refer to APPENDIX 1.3.)
at the major error occurrence. If another major error occurs after error code
storing, the previous error code is overwritten by the new error code.
(b) Major error codes can be cleared by an error reset command (M3207+20n).
(6) Servo error code storage register (D8+20n) ............ Monitor device
(a) This register stores the corresponding error code (Refer to APPENDIX 1.4.)
at the servo error occurrence. If another servo error occurs after error code
storing, the previous error code is overwritten by the new error code.
(b) Servo error codes can be cleared by an error reset command (M3208+20n).
(7) Home position return re-travel value storage register (D9+20n)
If the position specified with travel value after proximity dog ON (Refer to Section
6.23.1) using MT Developer2 is used to stop at a position that is not a zero point,
the position is made to travel to a zero point by re-travel in the Motion CPU. In
this case, the travel value (signed) of making it travel to a zero point by re-travel
is stored. (Data does not change with the last value in the data setting type.)
The following value is stored according to the number of feedback pulses of the
motor connected.
Number of feedback pulses
Less than 131072[pulse]
131072[pulse] or more,
262144[pulse] or less
More than 262144[pulse]
(Note-1): Confirm the actual value in home position return re-travel value (#8006+20n,
#8007+20n).
(8) Travel value after proximity dog ON storage register
(D10+20n, D11+20n) ................................................ Monitor device
(a) This register stores the travel value (unsigned) from the proximity dog ON to
home position return completion after the home position return start.
(b) The travel value (unsigned) of the position control is stored at the time of
speed-position switching control.
............................. Monitor device
Home position return re-travel value ([pulse] units)
1/10 of the home position return re-travel value
-1
(×10 [pulse] units)
1/10000 of the home position return re-travel value
-4
(×10 [pulse] units)
3 - 50
Stored data
(Note-1)
(Note-1)