Amazon.com: WITMOTION USB to RS485 Modbus RTU UART Converter Cable with CH340 Chip, Terminated by 4 Way Female Socket Header, Serial Adapter (1m/3.28ft, Black), Windows 10,8,7, Linux MAC OS : Electronics
ROCKWELL AUTOMATION 1763-NC01 Cable Assemblies, Custom Systems | EESCO
Euclide Innovation - Modbus RTU over TCP/IP
USB to Modbus-RTU | Dyacon
Modbus FAQ
Rules to do perfect cabling of MODBUS RTU - RS485 communication systems - TrackSo-Solar PV Monitoring and Analytics
W-Modbus Development Documentation 2.1.0
An Introduction to the Modbus Communication Protocol