| 摘要 |
A time-slot addressed, system keyed multiplex device is taught. Briefly stated, a ribbon cable (48) provided a power (VCC) and ground lead (GND) and a clock (78) and data signal lead (80). A microcomputer or master controller (46) then communicates over the ribbon cable with a plurality of intelligent connectors (52). Each connector is provided with a unique address (A3, A4, A5, A6, A7, A8) such that by counting (U3, U4) the number of clock pulses provided by the master controller, the logic package in the intelligent connector recognizes the appropriate time-slot for a response (194) or command signal (192). A single one-pulse command is then presented by the master controller on the data bus which is then received by the logic circuitry followed by a time period on the data bus when the logic package may send to the master controller a single bit of data. In this manner of command and response, various devices such as relays may be turned on or off with their conditions presented to the master controller. |
