Transfer Method - Mitsubishi Electric MR-J4 Instruction Manual

12. ABSOLUTE POSITION DETECTION SYSTEM

12.6.2 Transfer method

The following shows a sequence how to turn on the base circuit while it is off state because SON is off, EM2
is off, or an alarm is occurring. In the absolute position detection system, every time SON is turned on,
ABSM should always be turned on to read the current position in the servo amplifier to the controller. The
servo amplifier transmits to the controller the current position latched when ABSM switches from off to on. At
the same time, this data is set as a position command value inside the servo amplifier. Unless ABSM (ABS
transfer mode) is turned on, the base circuit cannot be turned on.
(1) At power-on
(a) Timing chart
Power
supply
SON
4)
ABSM
ABSR
ABST
ABSB0
ABSB1
Base circuit
RD
Note. For details, refer to (1) (b) of this section.
ON
OFF
ON
OFF
2), 3)
ON
During transfer of ABS
OFF
(Note)
ON
OFF
(Note)
ON
OFF
(Note)
Absolute position
95 ms
ON
OFF
ON
OFF
data
1)
Operation
enabled
12 - 11
If SON is turned ON before ABSM is input
During transfer of ABS
(Note)
(Note)
(Note)
Absolute position
data
95 ms
Operation
enabled