Initialization; Communication Procedure Example - Mitsubishi melservo-j2 series Instruction Manual

8. COMMUNICATION FUNCTIONS

8.9 Initialization

After the slave station is switched on, it cannot reply to communication until the internal initialization
processing terminates. Hence, at power-on, ordinary communication should be started after:
1) 1s or more time has elapsed after the slave station is switched on; and
2) Making sure that normal communication can be made by reading the parameter or other data which
does not pose any safety problems.

8.10 Communication Procedure Example

The following example reads the set value of parameter No.2 "function selection 1" from the servo
amplifier of station 0:
Data Item Value
Station number
Command
Data No.
Yes
No
3 consecutive times?
Yes
Error processing
Description
0 Servo amplifier station 0
05 Read command
02 Parameter No.2
Procedure
Data make-up
Checksum calculation and
addition
Addition of SOH to make
up transmission data
Data transmission
Data receive
Is there receive data?
Yes
300ms elapsed?
3 consecutive times?
Other than error code
[A] [a]?
No
Receive data analysis
End
Axis No. Command
Data [0] 0 5 STX
[0][0][5]
STX
Checksum 30H 30H 35H 02H 30H 32H 03H FCH
Transmission data
No
No
Yes
No
Yes
100ms after EOT transmission
Error processing
8 - 9
Data No.
0 2 ETX
[0][2]
ETX
SOH 0 5 STX 0 2 ETX
Master station
Master station
Master station
F C 46H 43H
slave station
slave station
slave station