PURPOSE: To execute a sure control by detecting RDY turn-on of the status of a device to be controlled by a controller when a maximum delay time τ, which can elapse during the time from write of preceding data to RDY turn-off, elapses.
CONSTITUTION: A CPU1 issues commands from a communication control part 2 in accordance with a program in a memory 3 to write data in a terminal 8 through buffers A and B constituting an interface device 4. Data is written from the CPU1 into the buffer A in parallel and is written in the buffer B in serial and is sent to the terminal 8 in serial. In case of the next write of the CPU1, said maximum time τ is set after write of preceding data, and RYD turn-on/off is detected when this delay time τ elapses. Thus, the control is executed surely and accurately.
SHIMOMICHI KAZUO
KOBAYASHI MASAAKI
HOSHINO TOMOHARU
MATSUZAKI YUUJI
| JPS5719822A | 1982-02-02 | |||
| JPS55138942A | 1980-10-30 |