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Cheapest way to add a ADC to MPU11/GPIO4D
Posted: Mon Jun 20, 2016 4:59 pm
by tblough
I need a single 0-10V(or 0-20ma) analog input for spindle load monitoring on my MPU11/GPIO4D lathe. What is the least expensive way to add this?
Re: Cheapest way to add a ADC to MPU11/GPIO4D
Posted: Wed Jul 06, 2016 2:23 pm
by Centroid_Tech
There aren't any analog inputs on the GPIO4D so with a GPIO4D system, an add-on board, ADD4AD4DA, is required in order to connect an analog input into the system. The PLC program will also need to be modified. The attached tech bulletin should help you out with customizing your PLC program.
Re: Cheapest way to add a ADC to MPU11/GPIO4D
Posted: Mon Jul 18, 2016 10:04 am
by tblough
I knew about the ADD4 board, but I was hoping for a little less expensive solution since I only needed one input. Are the PLC Expansion ports and communication protocol on the GPIO4D documented anywhere so I can create my own analog input board?
Re: Cheapest way to add a ADC to MPU11/GPIO4D
Posted: Mon Jul 18, 2016 11:02 am
by diycncscott
The least expensive method of adding an analog input would be through a OpticDirect PN12554 $450.00 Unfortunately, the protocol information is proprietary and not available for distribution.
Re: Cheapest way to add a ADC to MPU11/GPIO4D
Posted: Fri Jul 22, 2016 10:39 am
by tblough
Thanks, Scott. That's still a little steep considering a spindle load meter is a "nice to have" and not "need to have".