Algodue ELETTRONICA UPM309 Manual Del Usuario página 94

RECORDING DOWNLOAD FOR BASIC INSTRUMENT VERSION
1° STEP: prepare data for downloading
Command example: 0110F000000204000000016B36
Example Byte Description
01 - Slave address
10 - Function code
F0
High
Starting register
00 Low
00 High
2 words to be written
02 Low
04 - 4 data bytes
00 High
00 Low
Prepare data for downloading
00 High
01 Low
6B High
CRC
36 Low
Response example: 0110F000000272C8
Example Byte Description
01 - Slave address
10 - Function code
F0 High
Starting register
00
Low
00 High
2 written words
02 Low
72 High
CRC
C8 Low
2° STEP: perform the data download by a reading command
Query example: 0104F101006C931B
Example Byte Description
01 - Slave address
04 - Function code
F1 High
Starting register
01 Low
00 High
108 words to be read
6C Low
0B High
CRC
3B
Low
94 MODBUS RTU/ASCII, TCP