List of Contributions

@Suryawanshi - Thanks Ajay. Happy to share more implementation details if useful for the community. A few things that came up during commissioning that others might encounter: 1. Modbus timeout tuning: The biggest "gotcha" with any wireless RS-485 bridge is that most SCADA drivers have default ...

@Kakkerlak - Fair point, and the criticism is justified. The original post title used "DH-485" incorrectly - the actual application uses Modbus RTU over RS-485. I conflated the physical layer with the protocol in the question title, which was sloppy and misleading. Your correction about DH-485 token-passing ...

Hi all, I wanted to share some field experience with using a wireless RS-485 bridge for SCADA integration of legacy PLCs. This has been something I've been implementing for clients over the past year or so, and I think the community might find it useful. The Challenge Many plants have ...

@Kakkerlak - excellent and important correction, thank you. You are absolutely right about DH-485. It is a token-passing protocol with strict sub-millisecond timing windows - fundamentally incompatible with any wireless link due to latency and jitter. No transparent RS-485 bridge can relay DH-485 reliably, ...

Hi community, Working on brownfield RS-485 wireless bridging for SLC-500 PLCs. Need to connect PLCs 400m away to SCADA without new cabling. Evaluating the WENSHING WS-PLCMU700 transparent RS-485 wireless bridge (470MHz LoRa, 2km range): https://www.rf.net.tw/?action=en&style=show&m=118&id=431 Has anyone ...