Shandong Renke Control Technology RS-FX-N01 User Manual page 9

checking
Baud rate
4.2 Frame format definition data
Using M odbus - RTU communication protocol, in the following format:
Initial structure ≥ 4 byte time
address code = 1 byte
function code = 1 byte
Data area = N bytes
Error checking = 16-bit CRC
End structure ≥ 4 byte time
Address code: for the address of the transmitter, the communication network is the only
(factory default 0x01).
Function Code: The host command functions such directions, the transmitter has used only
the function code 0x03 (read data register).
Data area: data area is the specific communication data, note data of 16bits endian!
CRC code: two-byte checksum.
Host query frame structure:
address function
code code
1 byte 1 byte
Slave response frame structure:
address function
code code
1 byte 1 byte
4.3 Register Address
Register
address
0000 H
0001 H
Shandong RenKe Control Technology Co.,Ltd.
2400bit / s, 4800bit / s,
Register
start address
2 bytes
Valid
Data
bytes
area
1 byte
2 bytes
PLC or configuration
address
40001
40002
9
Manual wind transmitter (485 type)
9600 bit / s
can be set, the default setting
is 48 00bit / s
Register Check
length code low
2 bytes 1 byte
Second
data area first data
region N
2 bytes
content
Wind (0-7 files)
Upload data is true
Direction (0-360 °)
www.temperaturehumiditysensor.com
Check the
code high
1 byte
The
Check
code
2 bytes
2 bytes
operating
Read
only
Read