Programmable Logic Controllers Product Research (November 2006)

Research was undertaken to gain a better understanding of Control Engineering subscribers’ applications and needs regarding Programmable Logic Controllers.

12/14/2006


Research was undertaken to gain a better understanding of Control Engineering subscribers’ applications and needs regarding Programmable Logic Controllers.

Executive Summary

• Among those specifying, recommending, and/or buying Programmable Logic Controllers, 78% do so for in-plant requirements and 47% buy for OEM needs.
• A little over one-third of the average respondent’s installed PLCs are Micro PLCs (15 to 128 I/O). Medium PLCs (128 to 512 I/O) are a close second.
• Machine control is the most prominent (83%) application of PLCs at respondents’ locations. Process control is applied at about three-fourth of locations.
• Almost one in three respondents report they have PLCs that are networked with other PLCs, networked with personal computers, or are used in stand-alone applications.
• Serial RS-232/RS-485, Ethernet Protocol and 4-20 mA/0-10 V dc are currently the most widely used methods of communication with PLCs.
• Among those who use Ethernet, 74% use it for PLC-to-PLC networking with about the same, 72%, using it as a supervisory network.
• Among those who use Ethernet, 71% use TCP/IP as their protocol. EtherNet/IP is the second most popular protocol among this segment.
• Virtually all respondents use ladder diagrams to program PLCs. This is more than double the usage of any other programming language.
• Built-in communication support is the most important feature to survey participants when buying a programmable logic controller CPU.


Programmable Logic Controllers Product Research 2006





No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
Big Data and IIoT value; Monitoring Big Data; Robotics safety standards and programming; Learning about PID
Motor specification guidelines; Understanding multivariable control; Improving a safety instrumented system; 2017 Engineers' Choice Award Winners
Selecting the best controller from several viewpoints; System integrator advice for the IIoT; TSN and real-time Ethernet; Questions to ask when selecting a VFD; Action items for an aging PLC/DCS
This digital report will explore several aspects of how IIoT will transform manufacturing in the coming years.
Motion control advances and solutions can help with machine control, automated control on assembly lines, integration of robotics and automation, and machine safety.
This article collection contains several articles on the Industrial Internet of Things (IIoT) and how it is transforming manufacturing.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

Future of oil and gas projects; Reservoir models; The importance of SCADA to oil and gas
Big Data and bigger solutions; Tablet technologies; SCADA developments
SCADA at the junction, Managing risk through maintenance, Moving at the speed of data
Automation Engineer; Wood Group
System Integrator; Cross Integrated Systems Group
Jose S. Vasquez, Jr.
Fire & Life Safety Engineer; Technip USA Inc.
click me