On 2/15/2016 11:33 PM, Jon Elson wrote: > On 02/15/2016 10:03 PM, TJoseph Powderly wrote: >> 180 is a boatload! >> i used the 72 i/o ( 3x8255) thai pci but it was pooh poohed here >> despite it works for me with pull downs. >> from futurlec >> >> maybe he could use a plc, >> > Yes, I was thinking the same, this may be a case where a PLC > actually does make sense. > > Jon > Depends on how he wants to control the I/O. If he wants to offload the programming to the PLC I would go with something like the Siemens S7-1200 PLC. The programming software is very good and it has onboard Ethernet so you can use Modbus TCP to link to it. The software for the S7-1200 is structured so it can easily handle and organize thousands of I/O while maintaining sanity. If that is too much $$ I would look at the Automation Direct Click PLCs as they now have an ethernet module. But the programming software is not nearly as good. Regarding price per point, I doubt that anyone can beat the Click PLC. If they are not big into ladder logic, the Siemens controller also supports SCL which is similar to Pascal and has familiar if-then-else programming features.
Dave ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
