Mitsubishi Electric MELSERVO-J2S Series Transition Handbook page 69

Part 2: Review on Replacement of MR-J2S-_A_ with MR-J4-_A_
MR-J2S-_A_
No. Name and function
54 Function selection 9
Used to select the command pulse rotation direction,
encoder output pulse direction, and encoder pulse output
setting.
0
Changes in servo motor rotation
direction
Changes the servo motor rotation
direction relative to the input pulse
Servo motor rotation direction
Setting
When forward rotation
value
pulse is input
0 CCW
1 CW
Changes in encoder pulse output phase
Change the positions of the pulse
output A-phase and B-phase of the
encoder.
Servo motor rotation direction
Setting
value
CCW
A phase
0
B phase
A phase
相
1
B phase 相
Encoder output pulse setting selection
(Refer to parameter No. 27)
0: Output pulse specification
1: Division ratio setting
55 Function selection A
Used to select the control method of the position
command acceleration/deceleration time constant ([Pr.
7]).
0 0 0
Position command
acceleration/deceleration time
constant control
0: Primary delay
1: Linear acceleration/deceleration
56 Serial communication time-out selection
Used to set the time-out time of the communication
protocol in units of [s].
When "0" is set, Time-out check is not carried out.
Initial
value
0000h
When reverse rotation
pulse is input
CW
CCW
CW
A phase
B phase
A phase
B phase
0000h
0
2 - 38
MR-J4-_A_
No. Name and function
PA14 Select servo motor rotation direction relative to the
input pulse train.
Servo motor rotation direction
Setting
When forward rotation
value
pulse is input
0 CCW
1 CW
Set the same value as for MR-J2S-_A_.
PC19 Encoder output pulse selection
0 0
Changes in encoder pulse output
phase
Change the positions of the
pulse output A-phase and
B-phase of the encoder.
Servo motor rotation direction
Setting
value
CCW
A phase
0
B phase
A phase
1
B phase
Encoder output pulse setting
selection
Set the same value as for MR-J2S-_A_.
PB25 Function selection B-1
Used to select the position command
acceleration/deceleration filter type.
0 0 0
Position command
acceleration/deceleration filter
type
0: Primary delay
1: Linear
acceleration/deceleration
When you select "Linear acceleration/deceleration",
do not switch the control mode. When the control
mode is switched, the servo motor stops suddenly.
Set the same value as for MR-J2S-_A_.
No corresponding parameter
Note: MR-J4-_A_
Time-out check is carried out.
Control
Initial
value
0
When reverse rotation
pulse is input
CW
CCW
0000h
CW
A phase
B phase
A phase
B phase
0000h
mode
P
P
S
T
P