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I'm new to all this so bare with me... I have a Siemens S7-200 series with a network module up and running and doing what I need it to do. Now I'm trying to write a Visual Basic program to access some of the memory locations so that I can do some DHTML programming... I know there is an Alan...

I'm looking for a meter to measure air flow through a 6" PVC pipe. I have some data logging software that communicates with RS232 that I would like to use to capture the data. I'm using google but most of what I find are hand held units, I would like one to mount in the PVC line. Any...

You hit a button on the tool bar that the OPC program added to excel. I tried recording a macro, but excel acts as if it didn't even see that button click when I try and record it...

Well, that will start a macro automatically, but I don't know how to make it start collecting data from within that macro...

I'm using the latest Siemens OPC server, collecting data with their excel plug in. I'm trying to make it so it automatically starts collecting data when the spreadsheet is opened. I'm having trouble doing it with a macro. Anyone know how to do this? The idea is to have it as automatic as...

What are my options for piping a fill line for 96% sulfuric acid? Thanks

Well, the way it was explained to me was the city has their meters they read on the lines. They are roto-type meters that are screwed into the top of the lines. I've heard there is a type of meter that we can unscrew the city meters, place this meter in it, and screw the city meter back on top...

I need to install water meters on 2 4" lines coming into my plant. They are flowing around 500-700 GPM each at 20 PSI. I have heard there are meters that can 'piggy back' in between the main line and the city meter that sits on top of it. It's some type of rotometer. I can't find anything...

Ok, I'm a mechanical engineer but I need to install some water meters. I have 2 4" water mains coming into my plant. They are flowing approximately 500-700 GPM each and are at 80 PSI. I would like to install two meters and feed the data into a computer to generate water usage reports for set...

I don't know about you guys, but I sold all my books during college. I figured once I got a job I could buy only the needed books. So I'm in need of some reference books. I don't think it's necessary to buy all the latest additions at the high prices. I was wondering if you guys kept a list...