Mitsubishi Electric MELSERVO-MR-J4 GF Series Instruction Manual page 150

Details on the OMS bit of Controlword (idx mode)
Bit Symbol
4 New set-point
5 Direction
6 Operation mode
8 (reserved)
9 (reserved)
Details on the OMS bit of Statusword (idx mode)
Bit Symbol
10 (reserved)
12 Set-point acknowledge
13 Following error
6 SERVO MOTOR DRIVING
148
6.3 Indexer mode (idx)
Description
The operation starts toward the point table specified with the Target point table (2D60h) when the bit turns on.
0: Station No. decreasing direction
1: Station No. increasing direction
0: Rotation direction specifying indexer operation
1: Shortest rotating indexer operation
The value at reading is undefined. Set "0" when writing.
Description
The value at reading is undefined.
0: Positioning completed (wait for next command)
1: Positioning being executed
0: No following error
1: Following error
Judgment condition for Following error
When the time set with [Pr. PC69 Following error output filtering time] has elapsed with the number of droop
pulses exceeding the setting value of the [Pr. PC67/Pr. PC68 Following error output level], this bit becomes "1".