| 摘要 |
PROBLEM TO BE SOLVED: To improve the development efficiency by monitoring external signal data and a RAM data of a CPU for control at the same timing to accurately analyze data and using RAM data in an external device to perform detailed analysis. SOLUTION: An electronic control unit 1 which has at least a CPU 12 for control and controls a prescribed control object and a monitor device 3 which monitors RAM data in the CPU for control of the electronic unit are provided, and digital communication is adopted as communication between the electronic control unit and the monitor device. A repeating box 2 is provided between the electronic control unit and the monitor device, and a communication repeating part 21 which has a CPU 25 for communication and an IC 26, an A/D converter 27 which transmits and receives signals to and from external devices 51 to 53, and a repeating means 22 consisting of a pulse IC 28 and a D/A converter 29 are provided in the repeating box 2. |
