| 摘要 |
PROBLEM TO BE SOLVED: To prevent a malfunction from occurring during the communication between CPUs and a hitch from occurring in the interface between the CPUs by using a shared RAM. SOLUTION: In an interface constitution, which is produced by using a shared RAM 3 between a main CPU 1 and a mechanically controlling CPU 2, the main CPU 1 waits the end of the message sent from the mechanically controlling CPU 2 and also monitors the development of a sending parameter error. Further, the mechanically controlling CPU 2 receives a message sent from the main CPU 1 and, when the action of the message received becomes impossible due to the opening of a front cover or the like, the receiving parameter error is sent to the main CPU 1. |
