| 摘要 |
PURPOSE:To check the control program by short-circuiting one of input ports prior to the automatic control by a microcomputer controller so as to operate only the control program and a check program in a ROM. CONSTITUTION:Whether or not an input port (v) is short-circuited is judged after application of power of the microcomputer controller. With a switch SW turned on and the port (v) short-circuited, the check program stored in a ROM of the computer controller is operated. That is, whether or not the output A is outputted normally with respect to the input A is checked to check all control modules for inputs A, B.... After all the control modules are checked, whether or not the port (v) is short-circuited is judged again after all the control modules are checked. When short-circuited, the control modules are checked again and if not short-circuited, initializing is applied and if the port (v) is not short-circuited, the automatic control by the ROM is applied. |
