| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor controller which can easily change the content of the nonvolatile memory of a microcomputer without being broken even after shipment. <P>SOLUTION: A communication circuit 4 for communicating with microcomputers 1-3 has a data communication circuit 6 which enables the microcomputers 1-3 to communicate bidirectionally with one another, connecting them in parallel, and mode switching circuits 7-9 which switch modes of the microcomputers 1-3. A mode switching circuit 7 for the microcomputer 1 is connected with the reset terminals 2b and 3b of other microcomputers, and also it connects the reference potential 12 of the microcomputers 1-3 and mode switching terminals 1a-3a to terminals of a communication connector 5 individually thereby selecting a specified microcomputer by switches 14a-14c connected between the terminals and changing only the content of the nonvolatile memory of the selected microcomputer. <P>COPYRIGHT: (C)2007,JPO&INPIT |
