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Sequential Function Chart to PLC Ladder Logic Translation

This content was originally published by Eric Anderson as a white paper.  Overview This blog describes a procedure for translating a state transition diagram or sequential function chart into a ladder diagram. Ladder diagrams are available...


DMC's Blog Now Features a Nifty Code Syntax Highlighter

Check out the nifty new code syntax highlighter we've added to the blog.  This will make it much easier for us to post code snippets. Here's a sample c# function that is automatically formatted. Also note the handy tools on the upper rig...


Switch Windows XP to AHCI after Installing Windows

For purposes of ghosting SysPrepped PC's it could be important to switch Windows XP to AHCI after installing Windows. We have been doing this with our Dell laptops. Our baseline SysPrep image works well on Dell Precision M65's and M4300...


I2C and the .NET Micro Framework

It is well-known that increasing the number of pins on an integrated circuit (IC) increases its cost. To reduce the number of pins, several serial protocols have been developed to transfer data between IC's. One such protocol, I2C, uses only 2 bi...


Edmund Double-Gauss Lenses Produce Sharp Focus

I have been working on a 3D vision application using the SICK Ranger camera. My application involves precision measurement, so I want to get the best results possible from the equipment. The Ranger came with a Fujinon 35mm lens which focused shar...


DMC White Papers Go Live

We are happy to announce a new section of our website has gone live: DMC White Papers! We have planned on adding this section ever since we revamped our website four months ago. At this point in time we have two white papers. First there is Ken Br...


Design of a PC Controlled Vision Inspection System

Author's Notes: This blog is from my undergraduate Senior Thesis Project at Kettering University (formerly GMI Engineering and Management Institute) published in early 2002. This thesis received "Passed with Distinct...


Working with Legacy Hardware: Tips and Tricks

For a DMC engineer it is not atypical to be faced with outdated, legacy technology. Maybe a customer has come to us to upgrade a system that an intern did in the 90's; maybe a company's engineers have built up a system over the past decade an...


Solution to VB and VBA problems using the FlexGrid

Earlier in 2009, Microsoft declared the old FlexGrid control that came with VB6 a security threat. A security patch banned its use. FlexGrid was an ActiveX control that was commonly distributed with many applications including Office. It has been ...


Empowering your PLC with IEC 61131-3

Nobody loves catchy numeric buzzwords as much as me. I - E - C - Six - Eleven - Thirty - One - Dash - Three.... It just rolls off the tongue! OK I admit, it's a mouthful, but trust me it's worth knowing about. This is a brief intro to IEC6...


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