Programmable Power Up States in a Rolling Mill Application
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This document is part of a comprehensive tutorial on Industrial Digital I/O and Counter/Timer hardware. Learn about National Instruments product offerings for digital and timing I/O, the Industrial Feature Set including watchdog timers and isolation, complementary devices like relays, solenoids and encoders, concepts like sinking and sourcing, and see how these devices can be used in your industrial application.
For more information return to the Complete Industrial Digital I/O and Timing Tutorial
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Programmable Power Up States in a Rolling Mill Application
In a rolling mill, heated steel is forced through rolling machinery to create steel beams of varying widths. The rolling motor is controlled by a digital output line from a digital I/O module. When the computer is powered on, the rolling motors must be turned off to prevent any steel from being wasted during startup. If the digital I/O module does not provide a way to guarantee the initial outputs, the computer must completely boot and a control program must be started before known states are output on the channels. This lack of control could result in the waste of expensive raw materials and equipment damage. Programmable free power-up states ensure that all digital outputs will begin in a known state any time the device is powered on. Since none of the machinery turns on unexpectedly, no steel is wasted.
Recommended Products that Feature Programmable Power Up States
NI 6509
NI 6514
NI 6515
NI 6528
Learn More About Power Up States
The Industrial Feature Set: Programmable Power Up States
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