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Mitsubishi Electric MELSERVO-J4 Series Transition Handbook page 344

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Part 6: Review on Replacement of MR-J3-_T_(DIO command/ Serial communication operation) with MR-J4-_A_-RJ
MR-J3-_T_
No.
Name and function
PC19
Encoder output pulse selection
Use to select the, encoder output pulse direction and
encoder output pulse setting.
0 0 _ x:
Encoder output pulse phase changing
Changes the phases of A/B-phase encoder pulses
output .
Servo motor rotation direction
Set value
CCW
A-phase
0
B-phase
A-phase
1
B-phase
0 0 x _:
Encoder output pulse setting selection
0: Output pulse designation
1: Division ratio setting
2: Ratio is automatically set to command pulse unit
Setting "2" makes the [Pr. PA15] (encoder output pulse)
setting invalid.
PC20
Station number setting
Used to specify the station number for RS-422 serial
communication.
Always set one station to one axis of servo amplifier. If
one station number
is set to two or more stations, normal communication
cannot be made.
Initial
value
0000h
CW
A-phase
B-phase
A-phase
B-phase
0
6 - 65
MR-J4-_A_-RJ
No.
Name and function
PC19
Encoder output pulse selection
_ _ _ x:
Encoder output pulse phase selection
Select an encoder pulse direction.
0: Increasing A-phase 90° in CCW or positive direction
1: Increasing A-phase 90° in CW or negative direction
Servo motor rotation direction
Setting
CCW or positive
value
direction
A-phase
0
B-phase
A-phase
1
B-phase
_ _ x _:
Encoder output pulse setting selection
0: Output pulse setting
1: Division ratio setting
2: The same output pulse setting as command pulse
3: A-phase/B-phase pulse electronic gear setting
4: A/B-phase pulse through output setting
5: Command pulse input through output setting
When you select "1", the settings of [Pr. PA16 Encoder
output pulses 2] will be disabled.
When you select "2", the settings of [Pr. PA15 Encoder
output pulses] and [Pr. PA16 Encoder output pulses 2]
will be disabled.
Setting "4" will be enabled only when A/B/Z-phase
differential output linear encoder is used. And "Encoder
output pulse phase selection (_ _ _ x)" will be disabled.
When another encoder is connected, [AL. 37 Parameter
error] will occur. Setting "Standard control mode (_ _ 0
_)" in [Pr. PA01] will trigger [AL. 37 Parameter error].
When "5" is set, the settings of [Pr. PA15 Encoder
output pulses] and [Pr. PA16 Encoder output pulses 2]
will be disabled. "Encoder output pulse phase selection
(_ _ _ x)" and "Encoder selection for encoder output
pulse (_ x _ _)" will be also disabled. When [Pr. PA01] is
set to other than "Point table method (_ _ _ 6)", [AL. 37
Parameter error] occurs. When "5" is set, assign PP/PP2
with [Pr. PD44] and NP/NP2 with [Pr. PD46].
_ x _ _:
Selection of the encoders for encoder output pulse
Select an encoder used the encoder output pulses which
the servo amplifier outputs.
0: Servo motor encoder
1: Load-side encoder
When "_ 1 0 _" is set to this parameter, [AL. 37
Parameter error] will occur.
x _ _ _:
For manufacturer setting
PC20
Station No. setting
Specify a station No. of the servo amplifier for RS-422
and USB communication.
Always set one station to one axis of the servo amplifier.
Setting one station number to two or more stations will
disable a normal communication.
Setting range: 0 to 31
Initial
value
0h
CW or negative
direction
A-phase
B-phase
A-phase
B-phase
0h
0h
0h
0

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