{"id":41349,"date":"2024-05-20T23:52:49","date_gmt":"2024-05-20T23:52:49","guid":{"rendered":"https:\/\/www.alicat.com\/?post_type=document&#038;p=41349"},"modified":"2026-02-19T17:26:35","modified_gmt":"2026-02-19T17:26:35","slug":"faq-profibus","status":"publish","type":"document","link":"https:\/\/www.alicat.com\/de\/documentation\/faq-profibus\/","title":{"rendered":"PROFIBUS-FAQ"},"content":{"rendered":"\n[et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;_initial&#8221; hover_enabled=&#8221;0&#8243; custom_css_free_form=&#8221;@media (max-width: 375px) {||  .et-db #et-boc .et-l .et_pb_post_content_0_tb_body {||  width:100% !important;||  }}&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221; custom_padding=&#8221;0px|4vw||4vw|false|true&#8221; sticky_enabled=&#8221;0&#8243;][et_pb_row _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;_initial&#8221; custom_padding=&#8221;0px||0px||true|false&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.23.1&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_heading title=&#8221;PROFIBUS FAQ&#8221; _builder_version=&#8221;4.24.3&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_heading][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||1rem||false|false&#8221; global_colors_info=&#8221;{}&#8221;]Alicat<sup>&reg;<\/sup> devices are compatible with a variety of analog, serial, or industrial <a href=\"https:\/\/www.alicat.com\/support\/communication-options-for-alicat-instruments\/\">communication protocols<\/a> for easy data collection and analysis. Options include analog (4-20 mA, 0-10 Vdc, 0-5 Vdc, or 1-5 Vdc), ASCII and Modbus RTU over RS-232, ASCII and Modbus RTU over RS-485, PROFIBUS, PROFINET, DeviceNet, EtherNet\/IP, Modbus TCP\/IP, and EtherCAT.\n\nIn this article, we provide answers to common questions about PROFIBUS.\n\n<a href=\"https:\/\/documents.alicat.com\/manuals\/DOC-MAN-PROFIBUS.pdf\" target=\"_blank\" rel=\"noopener\">PROFIBUS manual<\/a>[\/et_pb_text][et_pb_accordion _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; toggle_font=&#8221;|700|||||||&#8221; hover_enabled=&#8221;0&#8243; global_colors_info=&#8221;{}&#8221; sticky_enabled=&#8221;0&#8243;][et_pb_accordion_item title=&#8221;Hidden Item So All Items Are Closed on Page Load&#8221; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; custom_css_free_form=&#8221;selector {||  display: none;||}&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;][\/et_pb_accordion_item][et_pb_accordion_item title=&#8221;Where can I find supporting download files?&#8221; open=&#8221;on&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]Find supporting downloads such as GSD files <a href=\"https:\/\/www.alicat.com\/support\/communication-options-for-alicat-instruments\/\">here<\/a>.[\/et_pb_accordion_item][et_pb_accordion_item title=&#8221;Which products can have PROFIBUS installed?&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; open=&#8221;off&#8221;]PROFIBUS is available on most of Alicat mass flow and pressure devices:\n\n<strong>Exceptions (incompatible with PROFIBUS):<\/strong>\n<ul>\n\t<li>CODA Coriolis controllers and meters<\/li>\n\t<li>OEM devices (<a href=\"https:\/\/www.alicat.com\/products\/gas-flow\/mass-flow-controller\/small-thermal-mass-flow-controllers\/\">BASIS<\/a>, <a href=\"https:\/\/www.alicat.com\/products\/pressure\/pressure-controller\/small-pressure-controllers-oem\/\">EP\/EPC\/EPCD<\/a>)<\/li>\n\t<li>Portable instruments (<a href=\"https:\/\/www.alicat.com\/products\/gas-flow\/mass-flow-meter\/portable-mass-flow-meters\/\">MB<\/a>, <a href=\"https:\/\/www.alicat.com\/products\/pressure\/pressure-meter\/portable-pressure-meters\/\">PB<\/a>, and <a href=\"https:\/\/www.alicat.com\/products\/liquid-flow\/liquid-flow-meter\/portable-liquid-meters\/\">LB<\/a>-Series)<\/li>\n\t<li><a href=\"https:\/\/www.alicat.com\/documentation\/hazardous-environments-faq\/\">Class 1 Division 2<\/a> area instruments (-X part numbers)<\/li>\n<\/ul>\n<a href=\"https:\/\/www.alicat.com\/support\/communication-options-for-alicat-instruments\/\">Communications protocols comparison<\/a>[\/et_pb_accordion_item][et_pb_accordion_item title=&#8221;How does PROFIBUS change instrument specifications?&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; open=&#8221;off&#8221;]<ul>\n\t<li><strong>Alicat part number:<\/strong> -PROFIBUS<\/li>\n\t<li><strong>Electrical connections:<\/strong> 9-pin D-sub Profibus connector next to a 4-pin M8 connector for RS-232 communication and power<\/li>\n\t<li><strong>Additional power requirement:<\/strong> 120 mA<\/li>\n\t<li><strong>Software compatibility:<\/strong> Serial terminals (<a href=\"https:\/\/www.alicat.com\/documentation\/software-drivers\/\">Alicat Terminal<\/a>, HyperTerminal, <a href=\"https:\/\/www.alicat.com\/support\/configuring-putty-for-use-with-alicat-instruments\/\">PuTTy<\/a>); <a href=\"https:\/\/www.alicat.com\/support\/flow-vision-software\/\">FlowVision 2<\/a>; <a href=\"https:\/\/www.alicat.com\/documentation\/labview-virtual-instrument-drivers\/\">LabVIEW<\/a><\/li>\n\t<li><strong>Max number of devices on network:<\/strong> 125<\/li>\n<\/ul>\n<a href=\"https:\/\/www.alicat.com\/technical-reference\/#pinouts\">Alicat connector pinout diagrams<\/a>[\/et_pb_accordion_item][et_pb_accordion_item title=&#8221;Which connector do I use to power the PROFIBUS device?&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; open=&#8221;off&#8221;]By default, the M8 connector is used to provide power. If the device was ordered with the power over PROFIBUS (POP part number) option in which you will use the DB9.[\/et_pb_accordion_item][et_pb_accordion_item title=&#8221;Do I still have a choice of gases and gas mixes on PROFIBUS instruments?&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; open=&#8221;off&#8221;]<ul>\n\t<li>Gas instruments with DeviceNet have the full <a href=\"https:\/\/www.alicat.com\/documentation\/gas-select-gas-list\/\">Gas Select&trade; list<\/a> of gas calibrations.<\/li>\n\t<li><a href=\"https:\/\/www.alicat.com\/support\/gas-select-composer-gas-mix-calibration\/\">Composer&trade; gas mixing firmware<\/a> is <em>not <\/em>accessible over PROFIBUS communication. However, it is accessible on the front panel or over RS-232 on PROFIBUS-enabled devices.<\/li>\n<\/ul>\n<a href=\"https:\/\/www.alicat.com\/support\/high-accuracy-multi-gas-calibrations-using-gas-select-feature\/\">How high-accuracy multi-gas calibrations work<\/a>[\/et_pb_accordion_item][et_pb_accordion_item title=&#8221;How fast are communications with a PROFIBUS instrument?&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; open=&#8221;off&#8221;]<p>The device supports all standard PROFIBUS baud rates, from 9.6 kbps to 12 mbps. Devices auto detect the baud rate when powered up.<\/p>[\/et_pb_accordion_item][et_pb_accordion_item title=&#8221;What is the notification indicator LED?&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; open=&#8221;off&#8221;]The LED will light up green if proper PROFIBUS communication is established.[\/et_pb_accordion_item][et_pb_accordion_item title=&#8221;Can I update my existing instruments to have PROFIBUS?&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; open=&#8221;off&#8221;]No. PROFIBUS can only be ordered on new instruments due to the hardware and firmware requirements during installation.[\/et_pb_accordion_item][et_pb_accordion_item title=&#8221;What DP version is the Alicat device?&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; open=&#8221;off&#8221;]V0.[\/et_pb_accordion_item][\/et_pb_accordion][\/et_pb_column][\/et_pb_row][\/et_pb_section]\n","protected":false},"featured_media":0,"parent":0,"template":"","meta":{"_acf_changed":false,"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"1400","content-type":"","_searchwp_excluded":""},"categories":[],"class_list":["post-41349","document","type-document","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>PROFIBUS FAQ - Alicat Scientific<\/title>\n<meta name=\"description\" content=\"an FAQ for Alicat PROFIBUS communication. 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