ModbusSlave devices running at hand

Original : https://www.toolsbox.biz/nonsense/STM32MiniModbusTCPSlave/index.html

I will introduce the ModbusSlave device running at hand. It is based on STM32miniShield.

Ensure that your ModbusSlave device works stably and operates at hand to verify/verify it.
I am trying to fix the source code and resume operation immediately when I come up with a new feature, of course, if I have a problem.
Here you will find the latest sources.

I access it from an off-the-shelf ModbusTCP tool from an iPhone or Windows PC over the network to identify the problem.
There is little problem with accessing from LVModbusMaster.
However, when accessing from a commercially available tool, access with the unknown functionCtion code occurs, and it stops without error handling, and various problems become apparent, so I am working on trying out as soon as I get a new tool.

First, let’s take a presentation of the current ModbusSlave device specifications.