TER ATLANTE EVO Instrucciones De Uso Y Mantenimiento página 14

Byte Request
(Hex) Field name
18 Device address
03 Function code
00 Address of the first register Hi bytes
00 Address of the first register Lo bytes
00 Number of registers Hi bytes
04 Number of registers Lo bytes
46 MSB of Checksum CRC-16
00 LSB of Checksum CRC-16
4.2.6.2 Write Holding Register
Here is reported an example of writing a holding register with address 0x0030 for the SlaveID 0x18.
Byte Request
(Hex) Field name
18 Device address
10 Function code
00 Address of the first register Hi bytes
30 Address of the first register Lo bytes
00 Number of registers Hi bytes
01 Number of registers Lo bytes
02 Number of byte to follow
05 value to write : MSB of reset
command
00 value to write : LSB of reset command
07 MSB of Checksum CRC-16
60 LSB of Checksum CRC-16
14
Byte Answer
(Hex) Field name
18 Device address
03 Function code
08 The number of data bytes to follow (4
registers x 2 bytes each = 8 bytes)
00 AbsoluteDecAngle (MSB ) [3]
00 AbsoluteDecAngle[2]
17 AbsoluteDecAngle[1]
5E AbsoluteDecAngle (LSB) [0]
00 NumberOfTurns (MSB)[3]
00 NumberOfTurns [2]
00 NumberOfTurns [1]
01 NumberOfTurns LSB[0]
C9 MSB of Checksum CRC-16
66 LSB of Checksum CRC-16
Byte Answer
(Hex) Field name
18 Device address
10 Function code
00 Address of the first register Hi bytes
30 Address of the first register Lo bytes
00 number of registers written Hi bytes
01 number of registers written Lo bytes
03 MSB of Checksum CRC-16
CF LSB of Checksum CRC-16