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Entries for the 'Siemens PLC' Category

DMC to Present at the 2011 Siemens Automation Summit

DMC is excited to attend and present at the Siemens Automation Summit 2011 held from June 27-30 at Disney’s Yacht and Beach Club Resorts in Orlando, FL. The Summit is an annual conference that focuses on the end-users of Siemens automation prod...


Using Siemens S7-300 PLCs to Report System Errors

The Siemens S7-300 line of PLCs has about a million great features integrated into the programming environment. After I recently inherited a PLC project where some (many) of these were not implemented, I thought it might be a good idea to do a recap ...


DMC Presents at the 2010 Siemens Automation Summit

What was the best part of my trip to Charlotte, NC last week? - Watching the Blackhawks Stanley Cup game 6 on a massive screen in the NASCAR hall of fame after the Siemens award ceremony. Very surreal... and totally awesome! Yes, Siemens really kn...


Siemens vs Allen-Bradley: Function Blocks

Siemens and Rockwell Automation are two giants competing in industrial automation technology today. Rockwell (aka Allen-Bradley) seems to be more popular in the US market, but Siemens has a larger international customer base. A cursory Google search ...


Successful Implementation of Siemens' SiMotion Shaftless Drive Standard

In many industries, shaftless drive technology has replaced the old mechanical drive systems. Instead of using mechanical gearing to force one axis on a machine to follow another one, servos are used. The servo technology reduces many of the flaws of...


Object Oriented Programming in Siemens and Allen Bradley PLCs

Since their conception PLC programs have been founded on simple programs. RLL (Relay Ladder Logic) and IL (Instruction List) commands have dominated PLC programs since PLCs first came to market in the 1970s. However in the past few years automation r...


PLC Analog IO Troubleshooting Tips

When commissioning or troubleshooting PLC inputs and outputs (IO), the analog signals are often the most difficult. First, analog IO almost always has to be scaled to convert the raw signal to useful process values. Also, there are many wiring and ex...


"Indirect Addressing" in Step 7 Basic v10.5 SP2

For those of us who appreciate and harness the power of indirect addressing in Siemens S7 300 and 400 level PLCs, we were sad to hear that this functionality was not supported in the same way for the new Step 7 Basic software for S7-1200 PLCs. As ...


Siemens S7-1200 PLC communicates through Sinaut MD720-3 cellular modem

Many consumers, including myself, have tapped into the ever-growing functionality of mobile internet. Many people leverage this infrastructure for their mobile phone. Others are beginning to use WiMAX connections for their PCs. Not to be out-done, PL...


Redundant Control Systems: Siemens S7 400H Series PLC and WinCC

There are certain control systems, such as in nuclear power plants and airplanes, that cannot be disabled or shut down, even momentarily, because of the threat to people’s lives. In these applications, a redundant control system must be in plac...


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