Signal transfer method having unique word assigned to terminal stations appended before control frames originated from control station and terminal stations

摘要

A signal transfer method for transmitting and receiving signals between a control apparatus and a plurality of controlled apparatuses. In order to achieve the signal transfer method which can remarkably reduce the number of signal lines of a bus cable, individually reset the controlled apparatuses in the same structure from the control apparatus and utilizes the control frame in the maximum for the control signal itself, a control address and a transmission line address are serialized and are transmitted with a common serial address line, a transmission control signal line is used in common with a control response and a transmission control signal sent from the peripheral units while a reception control signal line with a control command and a reception control signal sent from the common controller, a controlled apparatus executes the control for resetting thereof by detecting a reset character individually assigned thereto, and a terminal station or a terminal station group can be discriminated by adding a unique word to the region immediately before the control frame.