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Raspberry Pi Zero Modbus TCP/RTU Gateway using Node-RED

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Published on Aug 22, 2017

Simple way to communicate with Modbus RTU devices using Modbus TCP instead. The Raspberry Pi is acting as both a Modbus TCP slave and Modbus RTU master. The Node RED flow simply maps the slave commands over to the RTU addresses.

Parts List:
WAGO
750-8101 PFC100 Ethernet PLC
750-473 4ch AI Module
750-600 End Module
787-1602 24VDC 1A Power Supply
734-106 6 conductor MSC Mini Male
734-306 6 conductor MSC Mini Female
8002-025-000-007 WAGO USB Charging Station
289-175 RJ45 Interface Module
221-415 5-Position Lever Nuts
2002 Series Terminal Blocks

TECO L510 VFD
Baldor AC Motor 56J
Raspberry Pi Zero W
USB-RS485-WE USB to RS485 Adapter
DIN Mount for Pi Zero (http:\\www.DINrPlate.com)

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