The PAC hardware does not come from the factory pre-loaded with any strategy in it. However, if someone else before you wrote a strategy and loaded it in there, you need to use caution especially if it's controlling some critical process.
One of the tools that comes with the (free) PAC Project Suite is called PAC Terminal and that can be used to see a variety of useful info including:
- If your PAC has a strategy in it
- If the strategy is running
- If the strategy has been Archived onto the controller itself, meaning you pull that Archive from the SNAP-PAC-R2 and add more logic to do your email, etc.
For example, if I want to see what's running on one of my controllers, I can go to the Windows start menu and find (under Opto 22 > PAC Project > Tools) PAC Terminal.
Your list of contollers shown will probably be much shorter, hopefully you'll recognize the IP address you've been using:
When you double-click on the device you'll see this window pop up. Where I've circled below in red shows this PAC has NOT had an Archive saved on it. I can also see the strategy is not running. The name of the strategy ("PulsePlus") could be useful if you're trying to locate the files on a harddrive or something.
There are a lot of OptoNewbies out there we've talked to or had in class who've been tasked with figuring out what a strategy they've "inherited" does, and how they might update/improve it. There are some tricks to sorting through a large strategy. But depending on how ugly and/or uncommented it is (or lacking of an Archive), there are situations where it's easlier to start over. Or replace a piece at a time.
Is this SNAP-PAC-R2 currently controlling something important that runs 24-7? Do you have the original strategy? (Or see using PAC Terminal that it's been archived on the SNAP-PAC-R2?)
As you get going on your new or improved strategy, as an IT guy I'm sure you know the importance of backup/archive. Here's a TechTip that talks about backing up your Opto projects [click here].
You may be a lonely 2 IT guys there, but you have lots of Opto 22 folks here in Temecula, CA (and OptoFans from all over the world on the OptoForums) that are happy to help!