This document (included in OptoTutorial 2229) provides the instructions to create a Microsoft Excel® worksheet with Visual Basic® for Applications (VBA) macros that:
- Read and write to input and output points via the SNAP PAC REST API
- Parse JSON text strings
- Check for input and return errors
- Collect data on an automated interval and display it in an Excel chart
For more tips, help, and code samples, visit the Opto 22 Developer’s portal at http://developer.opto22.com
This tutorial is based on the hardware and software that come with a SNAP PAC Learning Center (part number SNAP-PACLC). NOTE: Due to the unavailability of essential parts, the SNAP-PACLC is obsolete as of April 2022. This document will remain available on our website for customers who already own a SNAP PAC Learning Center.
If you don’t have a Learning Center but you’re comfortable using PAC Manager™ and PAC Control™, you can modify the instructions to work with your own Opto 22 devices.