Remote Power Control System
Original Publication Date: 1987-May-01
Included in the Prior Art Database: 2005-Feb-01
In a data communication system using a Synchronous Data Link Control (SDLC) protocol between a host processor and remote controller(s) which controls terminal units attached thereto, the controller is provided with a remote power control feature so that it can be remotely powered on and off by the host processor without using any new commands. For powering the controller on, the host processor produces successive same commands of "Set Normal Response Mode (SNRM)" which is normally used to control the IPL (initial program load) under SDLC protocol. When the controller receives three of the SNRM commands at intervals of less than 30 seconds, the main power of the controller is turned on and, then, the IPL is started with the next SNRM command being received.