Serial Communication Operation; Positioning Operation In Accordance With Point Tables - Mitsubishi Electric MELSERVO-J2 Series Instruction Manual

4. OPERATION
(6) Parameter setting
Set parameter No.2 (Function selection 1) as indicated below to make the absolute position detection
system valid:
Parameter No.2
1

4.6 Serial communication operation

The RS-422 or RS-232C communication function may be used to operate the servo amplifier from a
command device (controller) such as a personal computer. Positioning operation can be performed with
the positioning operation/position specified by selection of the point tables. Note that the RS-422 and RS-
232C communication functions cannot be used at the same time.
This section provides a data transfer procedure. Refer to Chapter 8 for full information on the connection
and transferred data between the controller and servo amplifier.

4.6.1 Positioning operation in accordance with point tables

By selecting the point table No. and switching on the forward rotation start (ST1) or reverse rotation start
(ST2) using the communication function, positioning operation in accordance with point tables can be
started.
(1) Selection of point tables
Using the device forced output from the controller (command [9][2], data No. [6][0]), choose point
tables from among No.1 to 15.
(2) Timing chart
Transmission
data
Servo motor
speed
No.
1) Point table No.2 selection
2) Point table No.1 selection
3) Point table No.3 selection
4) Forward rotation start (ST1) ON
5) Forward rotation start (ST1) OFF
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Selection of absolute position detection system
0: Incremental system
1: Absolute position detection system
1) 4) 5)
5ms
Point table No. 2
Transmission Data
search engine
4) 5)
2) 3)
Point table No. 1
Command
[9] [2]
[9] [2]
[9] [2]
[9] [2]
[9] [2]
4 - 33
4)
5)
Point table No. 3
Data No.
[6] [0]
[6] [0]
[6] [0]
[6] [0]
[6] [0]