Measurement control apparatus including interface circuits
First Claim
1. A measurement control apparatus comprising an interface circuit unit having a plurality of types of interface circuits compatible with a plurality of types of measurement controlled objects, and a measurement control processor for selecting one interface circuit compatible with any one measurement controlled object and for executing predetermined measurement control,wherein when said one measurement controlled object is given, the measurement control processor outputs from an output port, interface setting data for setting one interface circuit compatible with a measurement controlled object among the plurality of types of interface circuits before output of measurement control data from the output port to the measurement controlled object, andwherein further provision is made of an interface setting function unit located between said interface circuit unit and said measurement control processor, the interface setting function unit being comprised of following units (i) and (ii):
- (i) a gate function unit, coupled between said output port and a first input terminal of said interface circuit unit for receiving the measurement control data, the gate function unit for preventing input of said interface setting data to said interface circuit unit while the interface setting data is being output from said measurement control processor; and
(ii) a selecting function unit, coupled between said output port and a second input terminal of said interface circuit unit, for receiving said interface setting data and holding a selection of said one interface circuit which is selected by the interface setting data while said measurement control data is being output from said output port.
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Accused Products
Abstract
A measurement control apparatus designed to automatically select an interface circuit compatible with a measurement controlled object without error. A measurement control processor outputs interface setting data for setting one interface circuit compatible with the measurement controlled object in advance of output of measurement control data to the measurement controlled object. Based on this, an interface setting means activates only that interface circuit. Further, the processor is provided with a loopback unit for returning the interface setting data to the measurement control processor and confirms the match of the output interface setting data and the returned interface setting data. Further, it is provided with an identification code setting means for setting an identification code unique to an interface board mounting the interface circuit and confirms that the interface board has been correctly selected.
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Citations
15 Claims
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1. A measurement control apparatus comprising an interface circuit unit having a plurality of types of interface circuits compatible with a plurality of types of measurement controlled objects, and a measurement control processor for selecting one interface circuit compatible with any one measurement controlled object and for executing predetermined measurement control,
wherein when said one measurement controlled object is given, the measurement control processor outputs from an output port, interface setting data for setting one interface circuit compatible with a measurement controlled object among the plurality of types of interface circuits before output of measurement control data from the output port to the measurement controlled object, and wherein further provision is made of an interface setting function unit located between said interface circuit unit and said measurement control processor, the interface setting function unit being comprised of following units (i) and (ii): -
(i) a gate function unit, coupled between said output port and a first input terminal of said interface circuit unit for receiving the measurement control data, the gate function unit for preventing input of said interface setting data to said interface circuit unit while the interface setting data is being output from said measurement control processor; and (ii) a selecting function unit, coupled between said output port and a second input terminal of said interface circuit unit, for receiving said interface setting data and holding a selection of said one interface circuit which is selected by the interface setting data while said measurement control data is being output from said output port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A measurement control apparatus for controlling a selected measurement controlled object from among a plurality of measurement controlled objects, the apparatus comprising:
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a plurality of interface circuits including an interface circuit compatible with the selected measurement controlled object; and a measurement control processor coupled to the plurality of interface circuits for generating an interface setting data for choosing the compatible interface circuit and for generating a corresponding measurement control data for controlling the selected measurement controlled object, the interface setting data and the measurement control data being output in series from the measurement control processor, the interface setting data being output before the corresponding measurement control data; and an interface setting unit coupled between the plurality of interface circuits and the measurement control processor, the interface setting unit including; a selecting latch unit coupled between the measurement control processor and a first input port of the plurality of interface circuits for receiving the interface setting data to the first input port for the choosing the compatible interface circuit; and a gated buffer unit coupled between the measurement control processor and a second input port of the plurality of interface circuits for receiving the measurement control data to the compatible interface circuit, wherein the gated buffer unit prevents input of the interface setting data to the second input port while the interface setting data is being output by the measurement control processor, and wherein the selecting latch unit holds the interface setting data while the measurement control data is being output by the measurement control processor.
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Specification