| 摘要 |
<p>PURPOSE: A mastership changing method in a CPP control system is provided to change a mastership without collision by transferring a system control right from a master control head to a specific slave control head. CONSTITUTION: A mastership changing method in a CPP control system is as follows. A driver determines which slave control head receives a system control right from a master control head(S10). A mode is changed into the selected slave control head(S12). The response of a mode changing requirement is inputted from an operator who confirms the mode changing requirement in the slave control head. When the positive response is inputted from the operator, a positive response message is transmitted to the master control head(S18). The mode of the master control head is changed into a slave state based on the positive response message, and a permission message is transmitted to the slave control head(S26). The mode of the slave control head, which receives the permission message, is changed into a master state(S28).</p> |
