| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a load controller which can control load as user likes and reduce the influence to user. SOLUTION: A control means 5 has a fail-safe function. The control means 5 is provided with a input port P5 and I/O port P7 capable of setting to switch to input port or output port. At a normal operation time, a control signal of a load 7 is received in the input port P5 through a communication line 8 and a load driving signal from I/O port P7 set as the output port is output. This device is equipped with the control 5 which sets to switch the I/O port P7 to the input port by starting of fail-safe function at the occurrence of a communication error, a driving element 6 connected to the I/O port P7 which drives the load 7 by controlling by the load driving signal from the control means 5 at a normal operation time, and a back up means 11 which backs up the control of the driving element at the occurrence of a communication error.</p> |
