{"id":303,"date":"2012-10-25T08:54:12","date_gmt":"2012-10-25T08:54:12","guid":{"rendered":"http:\/\/www.horter.de\/blog\/?p=303"},"modified":"2023-01-14T17:54:26","modified_gmt":"2023-01-14T17:54:26","slug":"i2c-module-fur-hutschiene","status":"publish","type":"post","link":"https:\/\/www.horter.de\/blog\/i2c-module-fur-hutschiene\/","title":{"rendered":"I2C-Digital Module f\u00fcr 5, 12 oder 24V"},"content":{"rendered":"

I2C-Eingabe \/ I2C-Input 8-Bit 4..30V<\/h3>\n\n\n\n\n
\"I2C-Input<\/td>\n\"\"<\/td>\n<\/tr>\n
I2C-Eingabekarte<\/td>\nI2C-Eingabekarte mit Optokopplern<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Mit den I2C-Eingabekarten k\u00f6nnen 8 Bit bis 30V eingelesen werden. Der HIGH-Pegel wird ab 4V erkannt. Die Signalzust\u00e4nde werden an 8 Low-Current LEDs angezeig. \u00c4ndert sich ein Signal an einem Eingang wird dies an einer roten LED angezeigt und das INT-Signal auf LOW gezogen. Das I2C-Modem erkennt diesen Signalwechsel und kann ggf. auch automatisch\u00a0alle Eingabekarten abfragen. Die Karte mit den Optokopplern bietet einen gewissen Schutz zwischen den angeschlossenen Schaltern und Sensoren.<\/p>\n

 <\/p>\n

I2C-Ausgabe \/ I2C-Output 8-Bit 5..40V<\/h3>\n\n\n\n\n
\"\"<\/a><\/td>\n\"\"<\/a><\/td>\n<\/tr>\n
I2C-Ausgabekarte<\/td>\nI2C-Ausgabekarte mit Optokoppler<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Mit der I2C-Ausgabekarte k\u00f6nnen 8 Ausg\u00e4nge bis 40V geschaltet werden. Aus Ausgangstreiber haben wir den UDN2981A verbaut. Laut Datenblatt kann er 5\u202650 VDC bis maximal 0,5A schalten. Die Schaltung benutzt die „negative“ Logik weil der I2C-Porterweiterungsbaustein PCF8574 bei Spannung ein alle Ausg\u00e4nge durchschaltet. Beim Ansteuern muss lediglich das gew\u00fcnschte Bitmuster invertiert werden. Oder man subtrahiert vom 255 gew\u00fcnschten Ausgangswert bevor man ihn zur Ausgabekarte transferiert.<\/p>\n

 <\/p>\n

I2C-Ausgabe mit Leistungstransistor<\/h3>\n\n\n\n\n
\"\"<\/a><\/td>\n<\/td>\n<\/tr>\n
I2C-Ausgabekarte mit Optokoppler\u00a0und Leistungstransistoren f\u00fcr Ausgangsstr\u00f6me bis 0,5A pro Ausgang.<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

<\/h3>\n

5V \/ 1A –\u00a0Schaltnetzteil \/ Power Supply<\/h3>\n

\"Schaltnetzteil<\/a><\/h3>\n

Mit diesem 5V-Schaltnetzteil k\u00f6nnen die I2C-Baugruppen mit Spannung versorgt werden. Der maximale Eingangsspannungsbereich des verbauten Schaltreglers MC34063 betr\u00e4gt 40V und liefert bis zu 1,5A. Im Schaltschrank kann man damit aus den meist vorhandenen 24V DC die 5V-Spannung f\u00fcr die I2C-Bausteine erzeugen.<\/p>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

I2C-Eingabe \/ I2C-Input 8-Bit 4..30V I2C-Eingabekarte I2C-Eingabekarte mit Optokopplern Mit den I2C-Eingabekarten k\u00f6nnen 8 Bit bis 30V eingelesen werden. Der HIGH-Pegel wird ab 4V erkannt. Die Signalzust\u00e4nde werden an 8 Low-Current LEDs angezeig. \u00c4ndert sich ein Signal an einem Eingang… mehr lesen<\/a><\/p>\n","protected":false},"author":3,"featured_media":28280,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,256],"tags":[43,73,44,74,86,80,7,45,46,120,87,119],"class_list":["post-303","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-i2c-baugruppen","category-raspberry-sps","tag-12v","tag-12v-schalten","tag-24v","tag-24v-schalten","tag-ausgang","tag-eingang","tag-i2c","tag-input","tag-output","tag-relais","tag-schalten","tag-sensor"],"yoast_head":"\nI2C-Digital Module f\u00fcr 5, 12 oder 24V - Horter & Kalb Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.horter.de\/blog\/i2c-module-fur-hutschiene\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"I2C-Digital Module f\u00fcr 5, 12 oder 24V - Horter & Kalb Blog\" \/>\n<meta property=\"og:description\" content=\"I2C-Eingabe \/ I2C-Input 8-Bit 4..30V I2C-Eingabekarte I2C-Eingabekarte mit Optokopplern Mit den I2C-Eingabekarten k\u00f6nnen 8 Bit bis 30V eingelesen werden. 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