Aside from my other thread on PLC and hardware interfacing, does anyone have suggestions on cheap/er temperature inputs to a plc? Planning on Automation direct control of SSR/pumps/etc. As industrial controls go, PLCs are great and easy to program, but the inputs other than discrete signals can get harder to do cheaply. I have put together DL-06's in the past and used RTD modules, but they are more expensive than i really want on this job. Can there be usable temp inputs from the other side of things, like 1wire feeding the HMI computer and the HMI just putting values into the PLC over modbus? Is 1wire even fast enough to run an electric element PID loop?
RTD's or Thermocouples into a PLC is easy with just spending money, but I"m trying to keep the wife happy by making good beer consistently WITHOUT spending our kids' inheritance on the automation.
Discussion?
RTD's or Thermocouples into a PLC is easy with just spending money, but I"m trying to keep the wife happy by making good beer consistently WITHOUT spending our kids' inheritance on the automation.
Discussion?