Communication Specifications - Mitsubishi Electric MELSERVO-J2S-S061 Specifications And Instruction Manual

8.2 Communication specifications

The MELSERVO-J2S series is designed to send a reply on receipt of an instruction. The device which
gives this instruction (e.g. personal computer) is called a master station and the device which sends a
reply in response to the instruction (e.g. MR-J2S-A-S061 servo amplifier) is called a slave station. When
fetching data successively, the master station repeatedly commands the slave station to send data.
Item
Baudrate 9.6k/19.2k/38.4k/57.6k asynchronous system
Start bit
Data bit
Transfer code
Parity bit : 1 bit (even)
Stop bit
Transfer protocol Character system, half-duplex communication system
Start
8.2.1 Parameter setting
When the RS-422/RS-232C communication function is used to operate the servo, choose the communica-
tion specifications with parameter No.16.
(1) Communication baudrate
Choose the communication speed. Match this value to the communication speed of the sending end
(master station).
(2) Checksum
The checksum added to data can be deleted. When the checksum is not needed for the communication
specifications of the master station, delete the checksum at parameter No.57
Description
: 1 bit
: 8 bits
: 1 bit
(LSB)
0 1 2 3 4 5 6
Data
1 frame (11 bits)
49
(MSB)
Next
Parity Stop
7
start