JPS57115096A - Remote monitor and control equipment - Google Patents

Abstract

PURPOSE:To execute a quick response without spoiling the reliability, by providing a processing part on an equipment to be controlled, so that a test result of a control selective code is superposed on an answer message in response to polling in that case, by means of a high speed processing. CONSTITUTION:When increasing a speed of answer in response to a control selective signal, each station equipment to be controlled 1A-1N which has received the control selective signal inputted through a signal transmission device 11A and a series-parallel converter 12 from a circuit 3 sends this signal to a processing device 20 by use of a system bus 21 at first, and executes a code test by means of a high speed processing. Subsequently, its test result is immediately sent out to a control station equipment 2 as an answer message responding to polling in that case. In case when an outputted selective output has not become satisfactory in spite of the fact that said test result is satisfactory, a selection failure signal is sent out by the next step, and even if a control code from the control station equipment 2 is received, the control is locked. In this regard, in the figure, a control receiving part, an input bus, a control output part, an input display part and a parallel-series converter are denoted as 13, 14, 16, 18 and 19, respectively. In this way, an answer of an equipment to be controlled 1 to the control station equipment 2 is quickened.