Smartload Batch Controller Manual

Reference manual, not sure that it is the current manual:

A communications manual for the Danload 6000 is at

The document states that the comm protocol is Modbus.

(The manual is a pdf, but the bulk of the text is not searchable because the displayed characters are encoded. They are different than the source characters in the document. Copying and pasting into a text document shows a different set of characters than the displayed characters, so an ordinary text search fails to find the search term in the encoded text.)