| 摘要 |
PURPOSE:To prevent a runaway of a processor of a terminal equipment and a malfunction caused by a noise by transmitting an instruction to the terminal equipment as plural pieces of continuous codes in which each code consists of plural bits from a master equipment, in the case of turning ON and OFF a maneuvering apparatus. CONSTITUTION:A master equipment 1 transmits an instruction to a terminal equipment 2 as at least three pieces of continuous codes A, B and C in which each code consists of plural bits. The terminal equipment 2 stores the received continuous codes A, B and C in a command store area 7 of a maneuvering apparatus 3 of a memory 6, reads out one piece each by a write checking means 8 and writes it in an output register 4, checks it each time, and when it has no error, it becomes effective. When the code is written continuously in the output register 4, a control part 5 allows it to execute an operation corresponding to the contents shown by the written code. In such a way, when the code written in the output register 4 is converted due to a noise, it is different from the contents written in the command store area 7 of the memory 6, therefore, it is detected by the write checking means 8 and does not become effective, and a malfunction is prevented. |
