| 摘要 |
PURPOSE:To check data, by providing a word serial signal generating circuit for checking other place data, and sending out a checking signal to a receiving part of the other place data in an area remote from a controller of the same control system, and a signal line. CONSTITUTION:A signal generating circuit for generating a word serial signal for checking an other place data is provided, and when checking said data, the checking signal is sent out to the receiving part and the signal line. For instance, a checking start flag signal is outputted by a checking unit 3, is sent out to a controlling circuit 1 through a signal line 311, and also is sent out to the signal generating circuit 4 through a signal line 312. Subsequently, it is detected that the controlling circuit 1 has entered into a checking state by the signal generating circuit 4, and also a command for switching a changeover switch 401 to the side of a signal line 421 from a signal line 22, through a signal line 319 from the checking unit 3. Subsequently, a word serial bit parallel signal for checking is inputted through the signal line 421 to a receiving part 2 of the other place data, and a signal line 23 and 24, by the signal generating circuit 4, and is checked by the controlling circuit 1. |
