REMOTE SUPERVISORY CONTROLLER

摘要

PURPOSE:To eliminate an inter-station error factor caused by a re-transmission procedure in a connection type transmission procedure such as HDLC by using a pseudo UI command as a control field exclusively for time synchronization data in the remote supervisory controller. CONSTITUTION:In the remote supervisory controller executing transmission protocol processing according to the HDLC transmission procedure, sending information required for supervisory and control between a control station (master station) A and a controlled station (slave station) B to supervise and control the controlled device, the master station A is provided with a means sending time synchronization data for time matching through the use of a pseudo UI command being a procedure equal to a UI command in an HDLC transmission procedure in a control field through bit configuration not defined in the HDLC transmission procedure and a global address in an address field defined by the HDLC transmission procedure and the slave station is provided with a means executing pseudo UI command input processing being equal procedure as the UI command input processing of the HDLC transmission procedure for the time synchronization data sent from the master station.