As anybody any experience of wifi networks. I am currently looking at using 18 Unitronics Vision 290 PLC's (www.unitronics.com) for a production management system. Each PLC will communicate via a SAP database through a PC Interface. Initially i was going to connect all the PLC's to the PC using Ethernet cable, however i recently saw some serial bluetooth devices by sena technologies (www.sena.com), the Parani 10 and the Parani 100. Each PLC would have a Parani 10 connected to it and the Parani 100 basically acts as a bluetooth router. As anybody had experience of these products and how easy it is to interface the data to the PC. Networks are not my strong point. I really want to send the data from the PLC using modbus protocol. Any suggestions? The beauty about the Sena products is that they are really well priced (£60 ea for the parani10 and £240 for a 14 gate router, but if anyone has any better vendors, i'm all ears
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