Rixen TX-600N, Instruction Manual

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■ RS-232 Transmission Agreements
※
Please connect the AC Adaptor if it required a long time to transfer the data.
RS-232 is for one-way data transfer, receive and input the signal by three
grounded wires. Recommending using the transmission line which is
manufacture by OE factory or shorter than 10 meters of cable to connect the
computer and the instrument.
Transfer rate: 57600
Transfer Status: /8 / N / 1
Transmission Content: (8 BIT)
Read instructions: by function 03H (Read Holding Registers)
Modbus RTU CRC16 check
A. Request Data Frame
Ex: Read the data from address 00h (Read 1-byte of data from address 0000H)
Slave
address
Function
Starting
address
Hi
Starting
address
Lo
No. of
Word
Hi
No. of
Word
Lo
CRC
Lo
CRC
Hi
03H 03H 00H 00H 00H 01H 85H E8H
Response Data Frame
Ex: response data 2-Byte = 0x109D
Slave
address
Functio
n
Byte
count
Data
Hi
Data
Lo
CRC
Lo
CRC
Hi
03H 03H 02H 10H 9DH 0DH EDH
0x109D=4253
，
actual value =(Data-4000)/10=25.3
B. Request Data Frame
Ex: Read the data from address 00h (Read 2-byte of data from address 0000H)
Slave
address
Function
Starting
address
Hi
Starting
address
Lo
No. of
Word
Hi
No. of
Word
Lo
CRC
Lo
CRC
Hi
03H 03H 00H 00H 00H 02H C5H E9H
Response Data Frame
Ex. response data 4-Byte =0x109C and 0x109D
Slave
address
Function
Byte
count
Data(1)
Hi
Data(1)
Lo
03H 03H 04H 10H 9CH
Data(2)
Hi
Data (2) Lo
CRC
Lo
CRC
Hi
10H 9DH D1H 74H
0x109C=4252
，
actual value =(Data-4000)/10=25.2
0x109D=4253
，
actual value = (Data-4000)/10=25.3
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