Writing N Words - ECOLAB Versatronic Modbus Beschreibung

Response
Slave address
1 byte
Example
This example describes how to write a command for the value "Binary value of external
binary input 1" of the device. In this case, the slave address of the device is 1, the word
address is 0x17E2 (
should be "1".
Hex code for the instruction:
01
Slave
Hex code for the response:
01
Slave
3.4.3

Writing n words

Instruction
Slave address Function 0x10
1 byte 1 byte
Response
Slave address
1 byte
Example
Writing the word 'North plant' (ASCII coding with terminating code:
0x41 0x6E 0x6C 0x61 0x67 0x65 0x20 0x4E 0x6F 0x72 0x64 0x00) from word address
0x1000 as device name.
Hex code for the instruction:
01 10
Slave Function
Hex code for the response:
01
Slave
Function 0x06 Word address
1 byte 2 bytes
Ä Chapter 8.1.8 'Manual values' on page 51) and the word to write
06 17 E2
Function Word address
06 17 E2
Function Word address
Address of Number of
first word words x
2 bytes 2 bytes
Function 0x10 Address of first word Number of words x
1 byte 2 bytes
Ä Chapter 8.1.1 'Basic settings' on page 41
10 00 00 06
address 1st Number of
word words
10 10 00
Function address 1st word
19
Modbus protocol description
Word value Checksum CRC
2 bytes 2 bytes
00 01 ED 88
Value CRC
00 01 ED 88
Value CRC
Number of x word
bytes 2 x value(s)
1 byte 2 x bytes
Checksum CRC
2 bytes 2 bytes
41 6E 6C 61
0C 67 65 20 4E
6F 72 64 00
Number of Text in UTF-8
bytes encoding
00 06 44 CB
Number of words CRC
417102397 Rev. 1-10.2019
Checksum
CRC
2 bytes
DD 7D
CRC