Specifications

JiaXing Jarol Scientific Instrument Co.,Ltd － JR 6 000 series product s
114
Param
Param
Param
Param e
e
e
e ter
ter
ter
ter
Description
Description
Description
Description
Address
Address
Address
Address Meaning
Meaning
Meaning
Meaning of
of
of
of value
value
value
value
R/W
R/W
R/W
R/W
Feature
Feature
Feature
Feature
Inveter fault info
address
500 0 H
0x 14: tE
0x 15: EEP
0x 16:PIDE
0x 17: bE
0x 18: END
0x 19: OL3
R
The above shows the format of the frame. Now we will introduce the Modbus command and data
structure in details, which is called protocol data unit for simplicity. Also MSB stands for the most
significant byte and LSB stands for the least significant byte for the same reason. The description below
is data format in RTU mode.
Protocol data unit format of reading parameters:
Request format:
Protocol
Protocol
Protocol
Protocol data
data
data
data unit
unit
unit
unit Data
Data
Data
Data length(bytes)
length(bytes)
length(bytes)
length(bytes) Range
Range
Range
Range
Command 1 0x03
Data Address 2 0~0xFFFF
Read number 2 0x0001~0x0010
Reply format (success):
Protocol
Protocol
Protocol
Protocol data
data
data
data unit
unit
unit
unit Data
Data
Data
Data length(bytes)
length(bytes)
length(bytes)
length(bytes) Range
Range
Range
Range
Command 1 0x03