Comparison Of Communication Commands - Mitsubishi Electric MELSERVO-J2S Series Transition Handbook

Part 4: Review on Replacement of MR-J2S-_CP_/CL_ with MR-J4-_A_-RJ

3.7 Comparison of Communication Commands

[Communication command comparison between MR-J2S-_CP_ series and MR-J4-_A_-RJ series]
Table 4.1 compares the read commands between the MR-J2S-_CP_ series and MR-J4-_A_-RJ series ([Pr.
PT01]: when setting "2 _ _ _"), and table 4.2 compares the write commands. The functions added in the MR-
J4-A-RJ series are not included here. For details, refer to "MR-J4-_A_-RJ/MR-J4-03A6-RJ Servo Amplifier
Instruction Manual (Positioning Mode (SH(NA)030143))".
[Table 4.1] Compares the read commands between MR-J2S-_CP_ and MR-J4-_A_-RJ ([Pr. PT01]: when
setting "2 _ _ _").
(1) Status Display (command [0] [1])
Command Data No.
[0] [1] [8] [0] Data value of status
display and processed
[8] [1]
information
[8] [2]
[8] [3]
[8] [4]
[8] [5]
[8] [6]
[8] [7]
[8] [8]
[8] [9]
[8] [A]
[8] [B]
[8] [C]
[8] [D]
[8] [E]
[8] [F]
[9] [0]
(2) Parameter (command [0] [5])
Command Data No.
[0] [5] [0] [0] Current values of each parameter
to
The data number converted from hexadecimal
[5] [A]
to decimal corresponds to the parameter No.
POINT
[Pr. PT01]: MR Configurator2 cannot be used when the parameter is set to "2 _
_ _".
Even if a command or data No. is the same between different model servo
amplifiers, its description may differ.
Functions with difference are shown with shading.
Description
Current position
Command position:
Command remaining distance
Point table No.
Cumulative Feedback Pulses
Servo motor speed
Droop pulses
Override
Torque limit voltage
Regenerative load ratio
Effective load ratio
Peak load ratio
Instantaneous torque
Within one-revolution position
ABS counter
Load to inertia moment ratio
Bus voltage
MR-J2S-_CP_
Displayed items
MR-J2S-_CP_
[Pr. PT01]: when setting "2 _ _ _"
Current position
Command position:
Command remaining distance
Point table No.
Cumulative Feedback Pulses
Servo motor speed
Droop pulses
Override
Torque limit voltage
Regenerative load ratio
Effective load ratio
Peak load ratio
Instantaneous torque
Within one-revolution position
ABS counter
Load to inertia moment ratio
Bus voltage
Description
[Pr. PT01]: when setting "2 _ _ _"
Current values of each parameter
Read the current parameter in the
parameter group specified by the command
[8][5] + data No. [0][0]. Thus, make sure to
specify the parameter group by the
command [8][5] + data No. [0][0] before
reading the current value. The data number
converted from hexadecimal to decimal
corresponds to the parameter No.
4 - 40
MR-J4-_A_-RJ
MR-J4-_A_-RJ
Frame
length
12
Frame
length
8