I'm looking at: Mudbus.cpp - an Arduino library for a Modbus TCP slave. Copyright (C) 2011 Dee Wykoff
can't get how this library work with MULTIPLES REGISTERS what are the limits, maximum number of word in a message? with Rssim server I can send 125 Word in a message, with a slave server on arduino can't go over 4 word, then errors appears.
Looking at packages with wireshark, there's no response to Query of client, but a TCP segment of a reassembled PDU. Is this supposed to be correct?