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精密DAC和看门狗提高模拟输出安全

  • 上传时间: 2013-10-17
  • 上传用户:lsx1916
  • 资源积分:2 下载积分
  • 标      签: DAC 精密 看门狗 模拟

资 源 简 介

Abstract: Using a DAC and a microprocessor supervisor, the system safety can be improved in industrial controllers, programmablelogiccontrollers (PLC), and data-acquisition systems. The analog output is set to zero-scale (or pin-programmable midscale) when amicroprocessor failure, optocoupler failure, or undervoltage condition occurs. A simple application is shown on how to implement thisfunction.

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