How to Program a Siemens S7-300 Programmable Logic Controller

Do you have a Siemens S7-300 Programmable Logic Controller that you are not familiar with but you need to program it NOW! Following is a quick set of instructions I have put together to help you get started programming a Siemens S7-300 PLC.

After loading the programming software and connecting a Siemens MPI cable between your programming computer and the PLC, open SIMATIC Manager by clicking the icon on the desktop. The STEP 7 Wizard: “New Project” window will open. It is easier to use the Wizard to setup communications with your PLC, but I chose to take the scenic route. I figured I would learn more this way. So, close the STEP 7 Wizard window by clicking Cancel. If there are any other windows or projects open, close them. We want to start with a totally new program.

Create a new project by clicking the new project button on the toolbar in the upper left corner of your screen. Read the rest of this entry »

A Primer for Mobilizing Enterprise Applications: Is There a Killer App?

Where do Enterprise Applications and Mobile Devices meet? How about in the middle. At a software application and licensing conference 5 years ago I was asked to present a “how to mobilize an enterprise application”. The context of the talk included the proverbial “what is the next killer mobile app beyond email”. My answer was not short. I had 45 minutes to fill and did my best to make it entertaining. Since we were still on 2nd generation data networks for mobile, and network persistence was an issue, I spent most of the talk describing mobile middleware as the important link between developing enterprise application access for mobile access devices. Addressing the necessary architecture for OLTP vs. OLAP-based applications was the focus. Yep, all enterprise stuff.

Today, I say there are no killer apps in the enterprise. Yet if you are an ISV or independent developer and want to focus on a mobile enterprise applications business, than there is what I call “killer criteria”. Here are a few primers to help you get started.

Market Reach Read the rest of this entry »

Web-based Software.com: for recommended Help Desk Software

I have been working as an accountant for this couple of years. It has been a privilege for me to always get a hand from the IT officers or technicians. But I’m moving to the new office branch and there are no IT officers here for at least the first three months. I was in pain literally and you know what I did to survive? I purchased help desk software from the internet and for thousand words I have said it works well for me although it’s not as convenient as asking the technician in the first hand. Web-based-software is one of my favorite websites for paid-software.

If it’s really urgent for you to get the help desk software, I suggest you to log in to this websites and read all the reviews to get the details and comprehensive information for what kinds of help desk software you need to purchase. Help desk software can applied in so many computers’ trouble shoot problems. Each software or electronic devises related to computer or directly connected to computers are facilitated with its help desk software.

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