ZHC4931Manual
Public
Chengdu Zongheng Intelligent Control Co., Ltd
15
www.iotrouter.com
In this mode, the server can send Modbus data (address is the product address) to
communicate with the product. If the delivered data cannot be identified by the product, such
data is directly discarded and no longer forwarded; other devices on the same RS485 bus as
the product The device can also send Modbus data (address is the product address) to
communicate with the product. If the data cannot be identified by the product, such data is
directly discarded and no longer forwarded.
3.6.2.Serial parameters
Serial parameter register address
：
40786~40788
（
0x311~0x312
）
Support function code:
03 (read holding register),10 (write multiple holding registers)
Baud rate:
王
Stop bit
：
王
Data bit
：
王
Parity bit
：
王
Inquire
：
55 03 03 11 00 03 58 5E
Query response
：
55 03 06 00 25 80 01 01 01 1A 21
Write in
：
55 10 03 11 00 03 06 00 04 B0 01 02 03 B0 E1
Write response
：
55 10 03 11 00 03 DD 9D
(Successful writing will initialize the serial port parameters immediately, and "Write
Response" will use the latest serial port parameters to return)
Chart 2 Serial communication parameters
ITEM
Default parameter
Parameter range
Baud
rate
9600
（
0x002580
）
1200~921600
Data
bit
8
8
、
9
Stop
bit
1
1
、
1.5
、
2
Parity
bit
NONE
（
No check
）
NONE
、
EVEN
、
ODD
