| 摘要 |
PROBLEM TO BE SOLVED: To maintain an interface terminal function for a digital type protection control device stably and continuously.SOLUTION: A human interface terminal comprises: a digital type protection control device 7; communication sections which make communications via a communication line; a processing section which inputs and outputs data with the communication section to process the data to be input and output; a storage section which stores the data processed in the processing section; an operation section which receives user's operation; and a display section which displays the state of the digital type protection control device 7. Each of the communication sections has a plurality of communication control sections corresponding to a single communication standard, and a connection switching section which selects one of the plurality of communication control sections to connect it to the communication line. |
