| 摘要 |
PURPOSE:To decrease the transmission delay of the desired signal without increasing the whole scanning time by securing an optional change for the insertion position of the information ward which receives the super-commutation in accordance with the degree of desired quick transmission. CONSTITUTION:In case the information containing several measurements is transmitted to master station 2 from slave station 1 through transmission line 3 in the form of the information word of the frame constitution based on the prescribed transmission format, the measurement input is applied to analog input circuit 6 via converter 6, scanned by one word through high-speed scanner 22, and then stored in C register 23 after converted into the digital value via A/D converter 8. Then the contents of register 23 is shifted to O register 24 with every input of the data and then compared at comparison part 25 every time the data is set to registers 23 and 24 each, thus detecting the changing rate. When this changing rate exceeds the fixed value, interruption generator 25 is actuated to give the control to gate 27. Then the information ward of the measurements is inserted into the frame structure, thus eliminating the delay for the desired signal. |
