| 摘要 |
PURPOSE:To realize a flexible address assignment system for modules by providing a holding means for module addresses including individual addresses, common addresses, and group addresses. CONSTITUTION:Plural modules 2a-2g each have plural addresses and are connected to a switch line 3, selection line 4, and data bus 5 common to a bus control part 1. Plural addresses are formed of addresses characteristic to the respective modules as shown by switching 1, addresses common to all the modules as shown by switching 2, and addresses which are common, group by group, as shown by switching N as one example. The respective modules 2a-2g receive addresses specified by their incorporated reception parts selectively under the control of the bus control part 1. Consequently, all the modules are accessed at a time, module by module, or group by group to improve the operativity. |
