| 摘要 |
PROBLEM TO BE SOLVED: To provide a control data transmission method in a remote supervisory control system, in which control can be performed for a remote supervisory control apparatus by an IP system without changing the supervisory control program or the data structure of an information processing apparatus by a token system.SOLUTION: When a plurality of devices are defined as controlled systems, in state information (data elements d5-d8) included in control data of an information processing apparatus, the information processing apparatus defines auxiliary codes (D28, D24, D22, D21) designating control object devices in auxiliary code fields (data elements d105-d108). On the basis of presence/absence of the definition in the auxiliary code field, the remote supervisory control apparatus by the IP system determines control over a single or the plurality of devices. When control over the plurality of devices is determined, a position included in the control data of the IP system is divided and control is performed on the controlled system device designated by the auxiliary code ("1" raised in the data element d108) in the control data of the information processing apparatus. |
