| 摘要 |
<p>PROBLEM TO BE SOLVED: To easily and reliably perform replacing work when required to replace a part or the whole from plural control signal generating parts by pressing/fixing the terminal part of an output module in/to terminal receiving part, and inserting/connecting the output module between an input side signal conductor and an output side signal conductor. SOLUTION: In an I/O terminal, an output module 1 mounted with a relay 13 or the like can be freely replaced to a terminal base 2 integrated with a case 3. In the output module 1, a relay 13, a TRIAC 14 and a transistor 15 are respectively mounted by four pieces on a printed circuit board 12, and the terminal part having plural terminal piece being input/output terminals of the electronic elements is also arranged on the printed circuit board 12. The terminal base 2 has the terminal receiving part capable of pressing in/fixing the terminal part 7 of the output module 1 and an input connector 4 connected to an input side signal conductor.</p> |
