| 摘要 |
<p>PURPOSE:To control the power source of the input/output device of a batch station economically, by using interfaces for an information processing device and a power source control device in time division on one cable. CONSTITUTION:The signal of an input/output interface 7 and the signal of a power source control interface 8 are led to a selecting circuit 41. A PCM signal causes the selecting circuit 41 to select the power source control signal and is set to a register 43 together with the power source control signal. Data outputted in serial from the register 43 is converted to an optical signal by an electrooptic conversion circuit 44 and passes through an optical fiber cable 6 and is converted to an electric signal in an photoelectric conversion circuit 51 and is set to a register 52. When the PCM signal is 0, data set to the register 52 is set to a register 53 and is transmitted as the signal of the input/output interface 9; and when the PCM signal is 1, this data is set to a register 54 and is transmitted as the signal of the power source control interface 10 to the power source control part of an input/output device 3.</p> |
