Entries for the 'PLC' Category

Frank Riordan

04/25/2013

0 Comments

As a Siemens Solution Partner, DMC looks forward to attending the annual Siemens Automation Summit each year. Focused on the end users of Siemens automation products, the Summit offers opportunities for best practice sharing, networking, free hands-o...

Jack Cosgrove

04/02/2013

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I had the opportunity recently to work for a client who wanted to extract log data from a Siemens WinAC PLC using a C# .NET client. The application was archiving software that would run when another software component encountered an error. Log data w...

Jon Carson

01/29/2013

5 Comments

Siemens offers useful tools for accessing both Simatic and SiMotion projects programmatically, in the form of registered COM Type Library DLLs. These tools offer many exciting possibilities (well, it does if you're like me, and get excited by thi...

Frank Riordan

01/03/2013

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I'm always trying to get my daughters, ages 8 & 5, interested in what we do here at DMC. It's a challenge because I have a hard enough time explaining what DMC does to someone I meet at a cocktail party, never mind a couple of young kids....

Jon Carson

01/02/2013

2 Comments

There are many good options for automation and controls redundancy out there. Here is an example we just recently used in the field. The customer specified a requirement of complete redundancy for all IT, networking, and HMI components of one of a la...

Jason Mayes

10/16/2012

2 Comments

A few weeks ago I had the chance to experiment with serial communications using a Siemens S7-1200 PLC outfitted with a CM1241 (RS-485 module). Due to the limited number of projects we've had using the 1200 line of PLCs, this was an office first. ...

Jason Mayes

08/15/2012

7 Comments

Today, I found myself setting up some simple point-to-point serial communication on a Siemens S7-1200. For the current application, I was writing a simple function block to broadcast data to a Red Lion serial slave display, but there are a varie...

Jimmy Condon

07/10/2012

1 Comments

Most Human Machine Interfaces (HMI) are in a static location. Sometimes, this can be inconvenient if you need to check a device (motor, valve, diverter, etc.), but the sight line from the HMI is blocked and you need to be able to watch the device mov...

Nick Shea

03/22/2012

0 Comments

Are you a new user of Siemens PLCs a and wondering what terms like "process image" and "peripheral address" mean? What does the "P" in "PIW" stand for? Are you an experienced user and are too embarrassed ...

Danny Budzinski

03/20/2012

1 Comments

With the first few rounds of the tournament in the books, I figured it was time to dive into the first round of our programming language tournament (or Nerdament as I like to call it.) For a rundown of the competitors, you can check out the opening b...