ICP DAS USA I-7530A-MR User Manual page 51

Modbus rtu to can converter

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Checksum algorithm:

The checksum [CHK] is 2-characters of the sum of the command

message, from the first character to the character before <CR>.

For example:

Command: Reboot the I-7530A-MR module, "RA[CHK]<CR>".

1. Sum of the string = 'R' + 'A' = 52h + 41h = 93h.

2. Therefore the checksum is 93h and so [CHK]="93".

3. The command string with checksum ="RA93<CR>".

I-7530A-MR Modbus RTU to CAN Converter User's Manual (Version 1.07, 06/2016) ------------- 51

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