Mitsubishi Electric MELSERVO-J2 Series Instruction Manual page 160

8. COMMUNICATION FUNCTIONS
(1) Transmission of data from the controller to the servo
Controller side
(Master station)
Servo side
(Slave station)
(2) Transmission of data request from the controller to the servo
Controller side
Servo side
(3) Recovery of communication status by time-out
Controller side
Servo side
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S S
Data
O T
No.
H X
Station number
or
group
10 frames
S S
Data
O T
No.
H X
Station number
or
group
EOT causes the servo to return to
E
the receive neutral status.
O
T
*Data: Choose the data length from among 4, 8, 12 and 16 frames (data length depends on the command).
or
Data
4 frames
search engine
10 frames (data)
E
Check
Data*
T
sum
X
E
Check
T
sum
X
Data
8 frames
8 - 5
Station number
or
group
S E
Check
T T
sum
X X
6 frames
Positive response: Error code A
Negative response: Error code other than A
Station number
or
group
S
T Data*
X
6 frames (data)
or 12 frames or 16 frames
E
Check
T
sum
X