Mit Selihc Posted February 6, 2015 Report Share Posted February 6, 2015 Hi, My application is water analysis, the Ip68 rating is useful! so I aim to have all of the separate electrodes sending information to my PLC, which I can then use for test purposes and display on the HMI. I have in mind a good multi-parameter water analysis electrode to be used with my v1210. It can't be connected directly to the PLC, however the company offer a 'Blackbox' that enables RS485 protocol. Can sensors communicate with the PLC over RS485? Here is the instruction manual to the Black Box: http://www.aquaread.co.uk/downloads/manuals/Aquaread-BlackBox-Manual.pdf I've used analog input via 4-20ma before, but not rs485, any help would be great! Thanks Quote Link to comment Share on other sites More sharing options...
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