公开(公告)号：US08656065B1

公开(公告)日：2014-02-18

申请号：US13753108

申请日：2013-01-29

Applicant: Honeywell International Inc.

Inventor： Paul Gerhart ,  Christopher Ladas ,  Angela Lordi ,  Benjamin J. Stad

IPC: G06F3/00 ,  G06F13/12

CPC classification number: G06F13/385

Abstract: A programmable interface circuit includes channel(s) including a digital logic block having terminals for receiving control signals from a process controller block, for providing logic signals, and terminals for receiving processed signal data. An analog logic block includes a current output digital to analog converter (DAC). An output circuit block includes first and second field terminals (S1,S2) and a sense resistor, wherein current from the DAC is coupled to S1 and the sense resistor is coupled to S2. The analog logic block includes a first and a second multi-channel multiplexer (MUX), an operational amplifier, and an analog to digital converter (ADC). The control signals automatically select from signal modes including an analog output (AO) mode, a digital output (DO) mode, an analog input (AI) mode, a digital input (DI) mode, and at least one additional signal mode provided by adding a sub-mode to the AI mode or DI mode.

Abstract translation: 可编程接口电路包括具有数字逻辑块的通道，该数字逻辑块具有用于接收来自过程控制器块的控制信号，用于提供逻辑信号的终端和用于接收经处理的信号数据的终端。 模拟逻辑块包括电流输出数模转换器（DAC）。 输出电路块包括第一和第二场端子（S1，S2）和检测电阻器，其中来自DAC的电流耦合到S1，并且检测电阻器耦合到S2。 模拟逻辑块包括第一和第二多通道多路复用器（MUX），运算放大器和模数转换器（ADC）。 控制信号自动从信号模式中选择，包括模拟输出（AO）模式，数字输出（DO）模式，模拟输入（AI）模式，数字输入（DI）模式）和至少一个附加信号模式 在AI模式或DI模式下添加子模式。