Kimo CPE 310-S, Руководство пользователя, Страница: 6 / 28

2. Modbus
2.1. Configuration of parameters
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Communication speed: between 2400 and 115200 bauds, 19200 bauds by default
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Data bits: 8 bits
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Stop bit: 1 bit
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Parity: None
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Flow control: None
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Transmitter addressing: between 1 and 255 (automatically answers the requests from address 0)
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Data sending: made by words of 2 bytes, in the following order: most-significant then least-significant byte
2.2. Functions
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Register function:
Function 03
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Register writing: Function 16
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Communication loop test: Function 08
2.3. Access code to register
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Registers type:
Type Size Description Format
U8 1 byte Unsigned integer 8 bits Byte 1
Example with a value of
24 (0x18) 0x18
Type Size Description Format
U16 2 bytes Unsigned integer 16
bits Byte 2 Byte 1
Example with a value of 300 (0x 01 2C ) 0x01 0x2C
Type Size Description Format
U32 4 bytes Unsigned integer 32
bits Byte 2 Byte 1 Byte 4 Byte 3
Example with a value of 1 096 861 217 (0x 41 60 C6 21 ) 0xC6 0x21 0x41 0x60
Type Size Description Format
Real 4 bytes Real 32 bits Byte 2 Byte 1 Byte 4 Byte 3
Example with a value of
153.5 (0x 43 19 80 00 ) 0x80 0x00 0x43 0x19
Type Size Description Format
Enumeration 1 byte See Enumeration table
page 8 Same as U8
Boolean 1 byte True = 1 ; False = 0 Same as U8
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Modbus