| 摘要 |
PURPOSE:To execute smoothly a management of a sub-unit by sending the fact of initializing of the sub-unit to a main unit, when initializing the sub-unit, and sending back information corresponding to a state of the sub-unit which is not initizlied yet, from the main unit. CONSTITUTION:Information sent from a main unit MU 2 is displayed on an indicator of an input/output part 10 of a sub-unit SU 1, also operating key information of the input/output part 10 is transmitted to the MU 2, and a control part 21 of the MU 2 recognizes the latest state of the SU 1. When disturbance noise, etc. are generated, a reset signal is generated from a resetting circuit 12, and when the input/output part 10 and the control part 11 are initialized, an initializing signal is transmitted to the MU 2 through a communication control part 13. In the MU 2, the latest state recognizing information of the SU 1 stored in an internal memory of the control part 21 is called, and it is transmitted to the SU 1 through a communication control part 20. In such a way, the SU 1 is released to a state immediately before the initializing, which is recognized by the MU 2, and the next operation can be executed by making it have a continuity. |
