| 摘要 |
Provided are an A/D conversion device capable of continuously executing a high-speed A/D conversion; a D/A conversion device capable of continuously executing a high-speed D/A conversion; and a programmable controller (PLC) provided with the A/D and D/A conversion devices. The PLC is provided with: a data conversion unit 130, 230; a shared memory 140, 240 having a temporary storage area 141, 241 divided into first and second areas; and a control unit 122 or a control unit 222, wherein when an access of a predetermined data amount occurs in the temporary storage area 141, 241, the control unit 122 causes the data stored at the address accessed to be outputted, or the control unit 222 causes new data to be stored at said address. |
