| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that data of slave apparatuses cannot be obtained by a master apparatus on real-time basis, under the condition that a number of slave apparatuses connected to a master apparatus which is to be coped with increase.SOLUTION: When a system is assumed to be formed by combination of a master apparatus and a plurality of slave apparatuses, the master apparatus can obtain data of slave apparatuses on a real-time basis by designating the data to be obtained on the real-time basis to each slave apparatus according to the conditions of the system. Here, the real-time characteristics can be sustained, by designating the data to be obtained on real-time basis, in parallel with reception of status signals from the slave apparatuses (in synchronization with a clock signal for receiving the status signals). |
