| 摘要 |
PROBLEM TO BE SOLVED: To prevent erroneous operation and perform stable remote control. SOLUTION: In this device, a count value (counter code) of a counter 5 steps whenever manual operation switches 2A, 2B are operated. For instance, when the manual operation switch 2A is operated, a first operation signal comprising a transmission side identification code (ID), a counter code (N) and a control code (C) is transmitted. A receiver 11 collates the identification code on the basis of the first operation signal and outputs an instructed control signal. As long as the manual operation switch 2A is operated, a second operation signal comprising the counter code and the control code is repeatedly transmitted from a transmitter 1. As long as the counter code is not changed, the receiver 11 judges that no change in instruction contents from the proper transmitter 1 exists, and control is maintained. It can be judged whether it is a signal from the proper transmitter 1 and whether change in the instruction contents exists by collating the counter code, and operability is improved. |
