| 摘要 |
<p>PURPOSE:To obtain an easy-to-maintain monitor by connecting a commanding device for outputting to a CPU a command signal for transmitting a variety of informations, such as measured values, calculated values and the like, registered in a storage device and the CPU to each other via a series transmission circuit. CONSTITUTION:The measured values 7, such as pressures, temperatures and the like, of the various portions of an engine are sequentially A/D-converted (4) and calculated (1) by selecting the input terminals of a multiplexers 5 and 6 and calculated values DT are registered in a RAM3b. If this is out of condition, when a commanding device 10 is connected to the terminals of the driver 9 of a series transmission board BD5 and command signals (Q), (D), (m) and (w) are inputted, a value A/D, the calculated values DT, the address contents of the ROM3a and those of a RAM3b are easily obtained and the main cause of a failure is easily estimated. This constitution can increase an efficiency in and rationalize a maintenance work.</p> |
