| 摘要 |
PURPOSE:To perform bidirection communication having high efficiency and high reliability by removing an element to promote mixing of outbound communication and inbound communication and deterioration of a communication function, such as the generation of noise, in bidirectional communication in control of automatic production line equipment employing a contactless data transmission system. CONSTITUTION:Transmission and receipt of information for control of production are effected through bidirectional communication between a table plate 2 on which an object to be produced is placed and which is moved on a line and a device 10 outside the line. In this case, regulation is made on a part, where signals are overlapped with each other, in a manner to differ the phase of a signal wave through an outbound passage from that of a signal wave through an inbound passage in a transmission position so that signals through the outbound passage and the inbound passage of bidirectional communication are separated away from each other. |
