Slave unit, node unit, controllers and network system

Details Slave unit, node unit, controllers and network system Slave unit, node unit, controllers and network system

2005-09-13

2005-09-13

Bui, Bryan (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system

Remote supervisory monitoring

C702S117000, C702S187000, C700S003000, C700S014000

Reexamination Certificate

active

06944575

ABSTRACT:
Providing a slave that can precisely measure operating time of an output device that is service information, without having effects on a control system. To Mix slave13connected to a field network12, an actuator14and sensor15that detects completion of operation of the actuator are connected. Having a built-in timer, the Mix slave measures time from when OUT terminal to which the actuator is connected turns ON until IN terminal to which the sensor is connected turns ON, by using the timer. Time thus obtained will be operating time of the output device. Comparison of this operating time with a setting will determine whether or not the actuator normally operates.

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Patent Abstracts of Japan, vol. 1998, No. 11, Sep. 30, 1998 (Hitachi Ltd.; Bridgestone Corp.) Abstract only.

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