{"id":21639,"date":"2023-07-21T19:24:05","date_gmt":"2023-07-21T17:24:05","guid":{"rendered":"https:\/\/sisgeo.com\/non-classifiee\/quel-est-le-nombre-maximal-de-capteurs-numeriques-rs-485-modbus-le-nombre-maximal-de-chaines-et-la-longueur-maximale-du-cable-dans-un-reseau-rs-485\/"},"modified":"2024-01-05T15:23:25","modified_gmt":"2024-01-05T14:23:25","slug":"quel-est-le-nombre-maximal-de-capteurs-numeriques-rs-485-modbus-le-nombre-maximal-de-chaines-et-la-longueur-maximale-du-cable-dans-un-reseau-rs-485","status":"publish","type":"post","link":"https:\/\/sisgeo.com\/fr\/products-fr-2\/enregistreurs-de-donnees\/enregistreur-de-donnees-mini-omnialog\/quel-est-le-nombre-maximal-de-capteurs-numeriques-rs-485-modbus-le-nombre-maximal-de-chaines-et-la-longueur-maximale-du-cable-dans-un-reseau-rs-485\/","title":{"rendered":"FAQ#073 &#8211; Quel est le nombre maximal de capteurs num\u00e9riques (RS-485, Modbus), le nombre maximal de cha\u00eenes et la longueur maximale du c\u00e2ble dans un r\u00e9seau RS-485?"},"content":{"rendered":"\n<p>Last update: October 2021<\/p>\n\n<p>All the SISGEO digitized sensors utilize a RS485 interface with Modbus protocol.<\/p>\n\n<p>1.The maximum number of digitized sensors in a RS-485 network are 247 (theoretical)<\/p>\n\n<p>2.The maximum number of digitized sensors chains that is possible to connect to Modbus master unit (as OMNIAlog or miniOMNIAlog) are 4.<\/p>\n\n<p>3. About the maximum number of sensors in a chain and lengths, please follow the next tables:<\/p>\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"629\" height=\"630\" src=\"https:\/\/sisgeo.com\/wp-content\/uploads\/2023\/07\/Always_ON_-_Digital_gauges.png\" alt=\"\" class=\"wp-image-18114\" srcset=\"https:\/\/sisgeo.com\/wp-content\/uploads\/2023\/07\/Always_ON_-_Digital_gauges.png 629w, https:\/\/sisgeo.com\/wp-content\/uploads\/2023\/07\/Always_ON_-_Digital_gauges-300x300.png 300w, https:\/\/sisgeo.com\/wp-content\/uploads\/2023\/07\/Always_ON_-_Digital_gauges-150x150.png 150w\" sizes=\"(max-width: 629px) 100vw, 629px\" \/><\/figure>\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"627\" height=\"632\" src=\"https:\/\/sisgeo.com\/wp-content\/uploads\/2023\/07\/TIMED_digital_instruments.png\" alt=\"\" class=\"wp-image-18109\" style=\"aspect-ratio:1\" srcset=\"https:\/\/sisgeo.com\/wp-content\/uploads\/2023\/07\/TIMED_digital_instruments.png 627w, https:\/\/sisgeo.com\/wp-content\/uploads\/2023\/07\/TIMED_digital_instruments-298x300.png 298w, https:\/\/sisgeo.com\/wp-content\/uploads\/2023\/07\/TIMED_digital_instruments-150x150.png 150w\" sizes=\"(max-width: 627px) 100vw, 627px\" \/><\/figure>\n\n<p>NOTE: The sum of \u201cA\u201d and \u201cC\u201d lengths can\u2019t exceed 1000m. The compliance of points A and B, avoids the excessive voltage drop on the RS-485 line and guarantees the correct RS-485 network operation. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Last update: October 2021 All the SISGEO digitized sensors utilize a RS485 interface with Modbus protocol. 1.The maximum number of digitized sensors in a RS-485 network are 247 (theoretical) 2.The maximum number of digitized sensors chains that is possible to connect to Modbus master unit (as OMNIAlog or miniOMNIAlog) are 4. 3. About the maximum [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[565,573,709,700,481,486,676,550,561,576,501],"tags":[229],"class_list":["post-21639","post","type-post","status-publish","format-standard","hentry","category-chaine-lt-inclibus","category-chaine-md-profile","category-clinometre-a-barre-tb","category-d-tiltmeter-clinometres-numeriques-mems","category-enregistreur-de-donnees-mini-omnialog","category-enregistreur-de-donnees-omnialog","category-h-level-tassometres-hydrauliques","category-inclinometres-fixes-bh-profile","category-inclinometres-fixes-horizontaux","category-inclinometres-fixes-mems","category-systeme-inclinometrique-numerique-mems","tag-faq-fr"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>FAQ#073 - Quel est le nombre maximal de capteurs num\u00e9riques (RS-485, Modbus), le nombre maximal de cha\u00eenes et la longueur maximale du c\u00e2ble dans un r\u00e9seau RS-485? - Sisgeo<\/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:\/\/sisgeo.com\/fr\/products-fr-2\/enregistreurs-de-donnees\/enregistreur-de-donnees-mini-omnialog\/quel-est-le-nombre-maximal-de-capteurs-numeriques-rs-485-modbus-le-nombre-maximal-de-chaines-et-la-longueur-maximale-du-cable-dans-un-reseau-rs-485\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"FAQ#073 - Quel est le nombre maximal de capteurs num\u00e9riques (RS-485, Modbus), le nombre maximal de cha\u00eenes et la longueur maximale du c\u00e2ble dans un r\u00e9seau RS-485?\" \/>\n<meta property=\"og:description\" content=\"Last update: October 2021 All the SISGEO digitized sensors utilize a RS485 interface with Modbus protocol. 1.The maximum number of digitized sensors in a RS-485 network are 247 (theoretical) 2.The maximum number of digitized sensors chains that is possible to connect to Modbus master unit (as OMNIAlog or miniOMNIAlog) are 4. 3. 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