I have a 4 gang switch module which uses 05 - write single coil command to change channel status, but for reading status of that channel it lets me use only 01- read coils command with 8 coils to read ...

This is a bug that is new in release 0.10.0 and did not exist in 0.9.1. When doing a write request for a modbus coil, the coil is always set to false, no matter the value given. it can be reproduced ...

The Espressif NodeMCU-based module described in this series enables you to use the Modbus protocol over a WLAN. Now we cover the software and Modbus module configuration. In the first part of this ...

A new ultra-compact touchscreen interface proves that industrial control doesn’t need a large display to deliver big ...

An ultra-compact design doesn’t have to mean limitations in terms of functionality. DISPLAY VISIONS demonstrates this with ...