Motion Controllers

Programmable Logic Controllers ( PLCS ) & Programmable Logic Controller

More powerful microprocessors have resulted in programmable logic controllers ( PLCS ) able to perform multiaxis control and able to link with sophisticated vision systems. One reason new programmable logic controllers ( PLCS ) are taking on such a wide range of duties is that they can be installed in modules, thus simplifying any needed customization and future expansion. Because each programmable logic controller ( PLCS ) contains its own internal communication highway or bus, a programmable logic controller ( PLCS ) can be upgraded with additional memory or processing capability and can be added by snapping in additional modules.

Various programmable logic controller ( PLCS ) modules add RS-232 communication ports, multiaxis control and fault annunciation.

Programmable logic controller ( PLCS ) software can be developed either on or off line; data-management and analysis programs are available. Many of the programmable logic controllers ( PLCS ) can be programmed from an IBM PC or compatible machine, and special industrially hardened programmers are also available when extreme temperature, dust, and vibration are problems. I/O stations can be located up to 2,000 ft from the CPU.

A programmable logic controller ( PLCS ) is no more powerful than the software available for it. Two relatively recent developments for programmable logic controllers ( PLCS ) are menu-driven software and concurrent operating systems, which have simplified programming and made it more useful. Programs using menus allow an operator with only minimal training to monitor, analyze, and manage processes. Concurrent operating systems switch back and forth between two different programs so fast that both appear to be running at the same time.

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Programmable Logic Controller & Programmable Logic Controllers ( PLCS ): AC Linear Motion Controller Information

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