| 摘要 |
PROBLEM TO BE SOLVED: To easily perform broadcast communication with a plurality of option devices without installing any special circuit. SOLUTION: When select communication is executed (step S1; NO), an option side control unit selected by a select signal determines whether or not a command save bit is true (step S2). If not true (step S2; NO), the option side control unit executes processing according to a command signal (step S3). If the command save bit is true (step S2; YES), the option side control unit stores contents of the command signal (step S4). If broadcast communication is executed (step S1; YES), all the option side control units read a command signal from a memory, and execute processing according to the command signal (step S5). COPYRIGHT: (C)2009,JPO&INPIT
|
