| 摘要 |
Contact control I/F (interface) to attain transmission and reception of a contact signal with various contact specifications, which is electrically insulated from a circuit inside an apparatus by an insulation element. A plurality of signal terminals which carry out transmission and reception of a contact signal, and a switching unit for selectively setting at least one of the plurality of signal terminals at any one of an input terminal or an output terminal, are installed at a control apparatus for carrying out transmission and reception of a contact signal which is electrically isolated.
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