| 摘要 |
PROBLEM TO BE SOLVED: To execute a test for checking the functions of a programmable controller in a plant monitor and control device only by one operator. SOLUTION: Input elements (e.g. 801a, 801b) and output elements (e.g. 802a to 802c) for plant equipments in a field B and a controller/sequencer (PLC) 1, in which a signal is inputted or outputted through a signal line, in an electric room 1F execute a program by inputting the operation states of these equipments. An output signal from the PLC 1 to be executed by a test input signal outputted from a field control panel 10 of the like is received by a logic monitor terminal 6 in the field B through a communication route formed by a part of portable radio terminal slave equipments 2 to 5 as a radio line, the output signal whose state is changed is converted into a voice, which is informed of from a radio terminal 7 carried by an inspector 9. The inspector 9 manually executes a test input by short-circuiting a limit switch 801a and its program response can be checked by voice information to execute tests only by one person in the field B. |
