Mitsubishi Electric MELSERVO-J4 Series Transition Handbook page 345

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
PC21 RS-422 communication function selection
Select the communication I/F and select the RS-422
communication conditions.
0_ x 0:
RS-422 communication baud rate selection
0: 9600 [bps]
1: 19200 [bps]
2: 38400 [bps]
3: 57600 [bps]
4: 115200 [bps]
0 x _ 0:
RS-422 communication response delay time
0: Disabled
1: Enabled, reply sent after delay time of 800 µs or more
PC22 Function selection C-1
Select the encoder cable communication system
selection.
x 0 0 0:
Encoder cable communication system selection
0: Two-wire type
1: Four-wire type
Incorrect setting will result in an encoder alarm [AL.16
Encoder error 1] or [AL.20 Encoder error 2].
PC24 Function selection C-3
Select the unit of the in-position range.
0 0 0 x:
In-position range unit selection
0: Command input unit
1: Servo motor encoder unit
Initial
No.
value
0000h PC21 RS-422 communication function selection
Select the details of RS-422 communication function.
_ _ _ x:
For manufacturer setting
_ _ x _:
RS-422 communication baud rate selection
When using the parameter unit, set "1 _ _ _" in [Pr.
PF34].
0: 9600 [bps]
1: 19200 [bps]
2: 38400 [bps]
3: 57600 [bps]
4: 115200 [bps]
_ x _ _:
RS-422 communication response delay time selection
0: Disabled
1: Enabled (responding after 800 μs or longer delay
time)
x _ _ _:
For manufacturer setting
0000h PC22 Function selection C-1
_ _ _ x:
For manufacturer setting
_ _ x _:
For manufacturer setting
_ x _ _:
For manufacturer setting
x _ _ _:
Encoder cable communication method selection
Select the encoder cable communication method.
0: Two-wire type
1: Four-wire type
When using an encoder of A/B/Z-phase differential
output method, set "0".
If the setting is incorrect, [AL. 16 Encoder initial
communication error 1] or [AL. 20 Encoder normal
communication error 1] occurs.
0000h PC24 Function selection C-3
_ _ _ x:
In-position range unit selection
Select a unit of in-position range.
0: Command unit
1: Servo motor encoder pulse unit
_ _ x _:
For manufacturer setting
_ x _ _:
For manufacturer setting
x _ _ _:
Error excessive alarm level unit selection
Select a setting unit of the error excessive alarm level
set in [Pr. PC43].
0: Per 1 rev or 1 mm
1: Per 0.1 rev or 0.1 mm
2: Per 0.01 rev or 0.01 mm
3: Per 0.001 rev or 0.001 mm
6 - 66
MR-J4-_A_-RJ
Name and function
Initial
value
0h
0h
0h
0h
0h
0h
0h
0h
0h
0h
0h
0h