| 摘要 |
PURPOSE:To eliminate the need for a transmission LSI and a peripheral circuit for communication interface and to simplify the communication software by utilizing a prescribed period interruption by a timer so as to transmit/receive a command between equipments. CONSTITUTION:The processing at the master station side A is completed by applying reception preparation of a reply from a slave station B after a prescribed command is transmitted from a CPU1A via a digital output section 3A and applying prescribed post-processing after the reply is received. The series of processings are conducted based on a signal given from a timer 5A of each prescribed period. On the other hand, in receiving a command from the master station, after a prescribed preparation is conducted to return the reply, the reply is sent and the reception is finished with a required post- processing. The series of processings are conducted by a prescribed period of interruption from a timer 5B. |
