Algodue ELETTRONICA UPM307 - Communication Configuration Settings; Demand Time and Protocol Selection; Baud Rate, Mode, and Address

5-2
ENGLISH
Parameters setup
MODBUS protocol manual
MODBUS TCP
Values contained both in Request or Response messages are in hexa format.
Query example in case of MODBUS TCP: 0100000000090110E0280001020007
Example Byte Description No. of bytes
01 - Transaction identifier 1
00 High
Protocol identifier 4
00 Low
00 High
00 Low
09 - Byte count 1
01 - Unit identifier 1
10 - Function code 1
E0 High
Starting register 2
28 Low
00 High
No. of words to be written 2
01 Low
02 - No. of bytes to be written 1
00 High
Data for programming 2
07 Low
Response example in case of MODBUS TCP: 0100000000060110E0280001
Example Byte Description No. of bytes
01 - Transaction identifier 1
00 High
Protocol identifier 4
00 Low
00 High
00 Low
06 - Byte count 1
01 - Unit identifier 1
10 - Function code 1
E0 High
Starting register 2
28 Low
00 High
Command successfully sent 2
01 Low