| 摘要 |
PROBLEM TO BE SOLVED: To conduct real time control in when conducting the control, even without the installation of a communication cable to a location where the installation is difficult by reducing a total lead time, reducing the installation work cost and the cost attending on a line layout revision. SOLUTION: When a master station 11, whose WGID is '#0' and moreover whose WNID is '#0', issues a command to a slave station 12 whose WGIDs are '#0', '#1', '#2' and whose WNID is '#i', the master station 11 adds the WNID '#i' for designating the destination slave station 12 and the WGID '#0' for designating the sender master station 11 to a packet of the command and broadcasts the resulting packet. When the slave station 12 whose WNID is '#i' recognizes that the destination of the received command indicates the addition of its own ID, the slave station 12 returns a response to the sender slave station 12 whose WGID is '#0'. |
