Hi Charles, To interface with the 'outside world' as such you need to have a method of communication. Typically you would use something like a serial or network interface to send / receive commands to a programmable logic controller (PLC) and the controller would then do the actual work of firing relays etc... Both serial and network communications can be achieved at a good level of granular control through VBA, but before you head down either path you need to know how you are going to control the PLC and which PLC you are going to use. A common choice these days might be an Arduino for example. Sometimes manufacturers of lighting control systems have their own PLC's with their proprietary interfaces (same goes for many types of components) and perhaps you can interface directly to that. Others use 'head-end' control software (mostly for industrial applications) that usually have some sort of API that you can use to communicate with the software and issue commands / receive data with it.
Do you have an approach you are going to use? If so we can probably figure out a way to get Excel talking to it. Cheers The Frog -- Are you =EXP(E:RT) or =NOT(EXP(E:RT)) in Excel? And do you wanna be? It’s =TIME(2,DO:IT,N:OW) ! Join official Facebook page of this forum @ https://www.facebook.com/discussexcel FORUM RULES 1) Use concise, accurate thread titles. Poor thread titles, like Please Help, Urgent, Need Help, Formula Problem, Code Problem, and Need Advice will not get quick attention or may not be answered. 2) Don't post a question in the thread of another member. 3) Don't post questions regarding breaking or bypassing any security measure. 4) Acknowledge the responses you receive, good or bad. 5) Jobs posting is not allowed. 6) Sharing copyrighted material and their links is not allowed. NOTE : Don't ever post confidential data in a workbook. Forum owners and members are not responsible for any loss. --- You received this message because you are subscribed to the Google Groups "MS EXCEL AND VBA MACROS" group. To unsubscribe from this group and stop receiving emails from it, send an email to excel-macros+unsubscr...@googlegroups.com. To post to this group, send email to excel-macros@googlegroups.com. Visit this group at http://groups.google.com/group/excel-macros. For more options, visit https://groups.google.com/d/optout.
