JPH0420106U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the software configuration of a test device for a process control device according to an embodiment of this invention, FIG. 2 is a block diagram showing details of the software configuration of the test process in FIG. 1, and FIG. The figure is a flowchart showing the details of the bistable test execution process in Fig. 1, Fig. 4 is a block diagram showing the conventional test equipment and the test equipment of this invention, and Fig. 5 is the content of the software configuration using conventional periodic control. FIG. 6 is a block diagram showing details of the test processing in FIG. 5, FIG. 7 is an explanatory diagram showing the structure of the bistable in FIG. 6, and FIG. 8 shows the structure of the tag information table. FIG. 9 is an explanatory diagram showing the structure of the bistable test test table, and FIG. 10 is an explanatory diagram showing the relationship between the simulated input signal and the bistable input/output signal. 1 is a process control device, 2 is a test device, and S is a signal processing circuit. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Amendment 3.8.3.3 The scope of claims for utility model registration is amended as follows.

[Claim for Utility Model Registration] A test signal is input from the test device to the signal processing circuit of the process control device, and a status signal output from the signal processing circuit is received in response to the test signal. A bistable test execution process that performs processing to change the test signal, which requires high speed, in a test device for a process control device that tests the health of the process control device by comparing the status signal and a reference value, respectively; Execution means for executing and managing the output processing of the test signal in a short cycle ;
1. A test device for a process control device, comprising processing means for executing and managing diagnostic processing and test processing in a long cycle.

Claims (1)

[Scope of utility model registration request] A test signal is input from the test device to the signal processing circuit of the process control device, a status signal output from the signal processing circuit is received in response to the test signal, and the received status signal and the reference value are respectively In comparison, in a test device for a process control device that tests the health of the process control device, a bistable test execution process that performs a change process of the test signal that requires high speed and an output process of the test signal are performed. 1. A test device for a process control device, comprising: an execution means for managing execution in short cycles; and a processing means for managing execution in long cycles.