LARTET DC-24, Руководство пользователя

Страница: 28 / 37

CHAPTER 4 COMMUNICATION PROTOCOLS 4-12
DC-24 and DC-25 operation manual
Function 10h mode ASCII
Sending temperature and humidity using the function 10h.
In the frame, the following codes must be codified.
Unit = 01h
Function = 10h
Start address = 00h 00h
Identifier Protocol Num. bytes Unit Function Start address
00h 37h 00h 00h 00h 11h 01h 10h 00h 00h
Num. Registers Num. Bytes Data Data
00h 05h 0Ah 56h 54h 31h 39h 2Eh 34h 20h 35h 37h
In this example, in the data field the values 19,4°C 57% must be sent.
Response from the display:
The response from the display is the same frame received from the identifier until the number of
registers.
Identifier Protocol Num.
bytes
Unit Function Start
address
Num.
Registers
00h 37h 00h 00h 00h 11h 01h 10h 00h 00h 00h 05h
Function 10h mode Word
Sending temperature and humidity can be sent using the function 10h.
In the frame, the following codes must be codified.
Unit = 01h
Function = 10h
Start address = Register 40003 (Address 02h)
Identifier Protocol Num. Bytes Unit Function Start address
00h 37h 00h 00h 00h 0Bh 01h 10h 00h 02h
Number of registers Number of bytes Data
00h 02h 04h 00h F3h 00h 39h
In this example, in the data field the values 19,4°C 57% must be sent.
Response from the display:
The response from the display is the same frame received from the identifier until the number of
registers.
Identifier Protocol Number of
bytes
Unit Function Start
address
Number
registers
00h 37h 00h 00h 00h 0Bh 01h 10h 00h 00h 00h 04h