Control Platforms Show Breadth

PLC Is Still Dominant, but PACs and PCs Have Their Admirers

1 of 4 < 1 | 2 | 3 | 4 View on one page

The PLC is king of controllers for machine control platforms, but it’s not the only game in town. According to a recent Control Design survey, two-thirds of respondents said they primarily use PLCs. Both PACs and PC-based controls are each used by 13% of the participants in the survey. Embedded-board controls are used by only 5%.

Although PCs are receiving attention, 32% of the respondents who said they use PCs don’t use them for motion control. One-quarter of those same participants said they use PCs, but with an installed motion card, while 21% said they use PC-based controls only. The dominant operating system for these users is XP, selected by more than 77% of respondents. Other operating systems receiving mention included Vista, QNX, CE and even proprietary operating systems.

Surprisingly, 40% of surveyed PLC users aren’t using it for motion, but 30% do use it for all their motion control and 27% said they use it with a motion card connected.

The overwhelming language of choice was ladder logic, used by 87% of participants. Function block and structured text are used by 46% and 32% of respondents, respectively. Instruction list and sequential function chart each received 16% of the votes.

Sixty-one percent of the survey respondents said they use an integrated platform for which a single programming environment handles all required functions including control, HMI, I/O and motion.

Modular Controller series PID modules support ramp/soak control and provide multi-zone PID control, data acquisition and I/O for PC, DCS or PLC control systems, while integrating data logging and advanced alarm management. PLC ADD-ON
Modular Controller series PID modules support ramp/soak control and provide multi-zone PID control, data acquisition and I/O for PC, DCS or PLC control systems, while integrating data logging and advanced alarm management.
Red Lion Controls
717/767-6511
Adam-5550KW programmable automation controller (PAC) is designed to control tasks that require the features of both PLCs and industrial PCs. PAC
Adam-5550KW programmable automation controller (PAC) is designed to control tasks that require the features of both PLCs and industrial PCs. It uses the AMD Geode GX533 CPU with control-specific features such as a watchdog timer, battery backup RAM and deterministic I/O.
Advantech, Industrial Automation Group
800/205-7940
Three small Ethernet TCP/IP PLCs are built for the Bus Terminal I/O system. ETHERNET PLC
Three small Ethernet TCP/IP PLCs are built for the Bus Terminal I/O system. BC9020 and BC9120 models offer more program and data memory than BC9050. BC9120 has two Ethernet ports that act as a two-channel switch. The I/O stations can be configured with a line topology instead of a traditional star topology.
Beckhoff Automation
952/890-0000
EC31-HMI/RTX controller for the Simatic S7-mEC modular controller system simplifies configuration and minimizes installation costs by combining controller and HMI functions in a single solution. TURNKEY SOLUTION
EC31-HMI/RTX controller for the Simatic S7-mEC modular controller system simplifies configuration and minimizes installation costs by combining controller and HMI functions in a single solution. With WinAC RTX 2008 and WinCC Flexible software preinstalled, it accommodates plant-wide data, process visualization and control functions in an open platform.
Siemens Energy & Automation
800/241-4463
CJ2H programmable automation controller and CX-One integrated software tool v. 3.0 handle motion, process and logic control, process simulation and network configuration. MODULAR PAC
CJ2H programmable automation controller and CX-One integrated software tool v. 3.0 handle motion, process and logic control, process simulation and network configuration. With built-in EtherNet/IP interoperability and common tag database programming stored in CPU memory, the PAC enables machine builders to communicate using EtherNet/IP tag data links to legacy systems from other manufacturers.
Omron Industrial Automation
868/88-omron
The 12 Vdc MicroSmart Pentra uses a traditional brick design with 10, 16 or 24 built-in I/Os. SOLID BRICK
The 12 Vdc MicroSmart Pentra uses a traditional brick design with 10, 16 or 24 built-in I/Os. Functions include an optional communication module to configure up to seven serial devices, connecting HMI, PC, barcode readers, RFID equipment, AV controllers and more.
IDEC
800/262-4332
Speedway 767 I/O system combines the power of a PLC, the modularity of distributed I/O and IP67-grade protection. CABINET-FREE PLC

1 of 4 < 1 | 2 | 3 | 4 View on one page
Show Comments
Hide Comments

Join the discussion

We welcome your thoughtful comments.
All comments will display your user name.

Want to participate in the discussion?

Register for free

Log in for complete access.

Comments

No one has commented on this page yet.

RSS feed for comments on this page | RSS feed for all comments