| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve such a problem that a wireless slave machine side can not recognize situations of use of a plurality of available channel frequencies. <P>SOLUTION: The industrial equipment management system 1 has a wireless master machine 2 and a plurality of wireless slave machines 4 which are connected to the wireless master machine 2 by radio and detect connection point information through an I/O device 3 for each industrial equipment, wherein the wireless master machine uses a prescribed channel frequency out of the plurality of channel frequencies to perform polling communication with the wireless slave machines, and collects and manages the connection point information from the wireless slave machines. The wireless slave machines can recognize the situations of use of the plurality of channel frequencies available to the polling communication when set to a channel monitor mode for discriminating the situations of use of each channel frequency in accordance with setting operation of a mode switching setting part 28. <P>COPYRIGHT: (C)2007,JPO&INPIT |
