Lead LD-BK10 Series - Check Bit and Baud Rate Setting; MODBUS RTU Communication Protocol

4. Check bit and baud rate setting
5. MODBUS RTU communication protocol
17
Be modified by
Baud rate setting
0 stands for no check (N)
1 stands for parity check (E)
2 stands for odd check (O)
Communication
check bit setting
0 stands for 1200
1 stands for 2400
2 stands for 4800
3 stands for 9600
Be modified by
Normal display status
A. Function code specification:
a. When function code is 0x03, temperature value readings in each phase of
temperature controller should be taken.
b. When function code is 0x04, output state readings of temperature controller
relay should be taken.
B. Definition of register address:
a. Definition of register address for temperature value in each phase (function
code 0x03):
(1) Definition of frame
(2) Instructions on communications protocol
Initial bit Data length Check bit Stop bit
1 bit 8 bit 0 or 1 bit (To be set) 1 bit
Initial
address
Description Data type
Register address
corresponding to
some equipment
0x0000
Temperature data of phase A
Temperature data of phase B
Temperature data of phase C
Temperature data of phase D
Int16
Int16
Int16
Int16
40001
0x0001 40002
0x0002 40003
0x0003 40004