Mitsubishi Electric MELSERVO-J4 Series Instruction Manual page 453

10. COMMUNICATION FUNCTION (MITSUBISHI GENERAL-PURPOSE AC SERVO PROTOCOL)
(2) Writing data
CAUTION
(a) Position data
Writes position data of point tables.
Transmits the command [C] [0] + the data No. [0] [1] to [F] [F] corresponding to the point tables to
write + data. Refer to section 10.1.1.
When the position data is changed frequently using communication, set "1" to the mode to change
only the RAM data in the servo amplifier.
When changing data once or more within an hour, do not write it to the EEP-ROM.
If setting values need to be changed with a high frequency (i.e. once or more per
one hour), write the setting values to the RAM, not to the EEP-ROM. The EEP-
ROM has a limitation in the number of write times and exceeding this limitation
causes the servo amplifier to malfunction. Note that the number of write times to
the EEP-ROM is limited to approximately 100,000.
Command Data No.
[C] [0] [0] [1] to [F] [F]
Data is transferred in hexadecimal.
Decimal point position
0: No decimal point
1: First least significant digit (not used normally)
2: Second least significant digit
3: Third least significant digit
4: Forth least significant digit
5: Fifth least significant digit
6: Sixth least significant digit
Writing mode
0: Writing to EEP-ROM/RAM
1: Writing to RAM
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Data
Refer to the following
diagram.
Select the same decimal point position as
the set feed length multiplication (STM) in
[Pr. PT03].
If a different decimal point position is set,
slave stations will not receive data.