{"width":"100%","blog_url":"https://instant.engineer/","type":"rich","author_url":"https://blog.hatena.ne.jp/yuinomi/","height":"190","author_name":"yuinomi","provider_name":"Hatena Blog","url":"https://instant.engineer/entry/rs-232c","published":"2026-06-14 08:28:15","title":"RS-232C\u3068\u306f\uff1f\u30b7\u30ea\u30a2\u30eb\u901a\u4fe1\u3068RS-485\u9055\u3044","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Finstant.engineer%2Fentry%2Frs-232c\" title=\"RS-232C\u3068\u306f\uff1f\u30b7\u30ea\u30a2\u30eb\u901a\u4fe1\u3068RS-485\u9055\u3044 - Instant Engineering\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_title":"Instant Engineering","categories":["\u60c5\u5831\u51e6\u7406","\u60c5\u5831\u51e6\u7406-\u7523\u696d\u30cd\u30c3\u30c8\u30ef\u30fc\u30af"],"provider_url":"https://hatena.blog","version":"1.0","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/y/yuinomi/20260614/20260614082738.png","description":"\u53e4\u3044\u6e2c\u5b9a\u5668\u3084\u30d0\u30fc\u30b3\u30fc\u30c9\u30ea\u30fc\u30c0\u3092PLC\u306b\u3064\u306a\u3054\u3046\u3068\u3057\u305f\u3068\u304d\u3001\u300cRS-232C\u300d\u3068\u66f8\u304b\u308c\u305f\u7aef\u5b50\u3067\u6b62\u307e\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 USB\u3084Ethernet\u306b\u6163\u308c\u3066\u3044\u308b\u3068\u3001\u305f\u3060\u306e\u53e4\u3044\u901a\u4fe1\u7aef\u5b50\u306b\u898b\u3048\u307e\u3059\u3002 \u3057\u304b\u3057\u3001RS-232C\u306f\u4eca\u3067\u3082\u8a2d\u5099\u306e\u4fdd\u5168\u3001\u691c\u67fb\u88c5\u7f6e\u3001\u8a08\u6e2c\u5668\u9023\u643a\u3067\u4f7f\u308f\u308c\u308b\u91cd\u8981\u306a\u30b7\u30ea\u30a2\u30eb\u901a\u4fe1\u3067\u3059\u3002 \u7279\u306b\u3001RS-485\u3068\u540c\u3058\u611f\u899a\u3067\u914d\u7dda\u3059\u308b\u3068\u3001\u8ddd\u96e2\u4e0d\u8db3\u3001GND\u96fb\u4f4d\u5dee\u3001Tx/Rx\u306e\u5165\u308c\u9055\u3044\u3067\u901a\u4fe1\u3067\u304d\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 \u672c\u8a18\u4e8b\u3067\u306f\u3001RS-232C\u306e\u4ed5\u7d44\u307f\u3001\u5168\u4e8c\u91cd\u901a\u4fe1\u3001\u8ddd\u96e2\u5236\u9650\u3001\u7d50\u7dda\u65b9\u6cd5\u3001RS-485\u3068\u306e\u9055\u3044\u3092\u5b9f\u52d9\u76ee\u7dda\u3067\u89e3\u8aac\u3057\u307e\u3059\u3002 1. RS-232C\u3068\u306f\uff1a\u6a5f\u5668\u540c\u58eb\u30921\u5bfe1\u3067\u3064\u306a\u3050\u30b7\u30ea\u30a2\u30eb\u901a\u4fe1 RS-232C\u3067\u3067\u2026"}