A simple proof of concept showing how to implement multi-node redundancy using four NodeRED instances, with Modbus TCP Remote IO.
Example Flow:
https://flows.nodered.org/flow/2459383d322c7393e3c6affc3983777a
Parts used:
WAGO
750-352 Ethernet Coupler ModbusTCP
750-1506 8ch DI/DO 24VDC Module
750-461 RTD Module
750-600 End Module
787-1602 24VDC 1A PS
789-801 DIN push button
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Raspberry Pi 3b +
DIN Rail mount: www.DINrPlate.com
