Linux Embedded modbus - JohnHau/mis GitHub Wiki
https://www.embedded-experts.at/en/freemodbus/freemodbus-examples/ https://instrumentationtools.com/how-modbus-communication-works/ https://ozeki.hu/p_5888-modbus-protocol-basics.html https://www.linkedin.com/in/art-goldstein-374b8347
https://store.chipkin.com/articles/how-real-floating-point-and-32-bit-data-is-encoded-in-modbus-rtu-messages https://www.codeproject.com/Articles/20929/Simple-Modbus-Protocol-in-C-NET-2-0
https://techstep.co.nz/technologies/modbus-rtu/
https://automation-networks.com/glossary/modbus
https://www.radiflow.com/blog/hack-the-modbus/
https://www.rcrwireless.com/20161128/fundamentals/modbus-iot-tag31-tag99
https://www.eltima.com/article/modbus-vs-rs485/
https://www.utilityrelay.com/PDFs/Communications%20Example.pdf
https://copperhilltech.com/blog/modbus-programming-in-c-tcprtu-with-example-projects/
https://forum.mangoh.io/t/wiki-sample-apps-with-modbus-protocol-over-serial-port/1670
https://www.vanimpe.eu/2015/12/07/introduction-to-modbus-tcp-traffic/
https://www.despatch.com/pdfs/manuals/Modbus_e102.pdf
https://www.waveshare.com/wiki/Modbus_RTU_Relay
https://vutlan.com/blog/post/modbus-tcpip-modbus-rtu-readwrite-support.html
https://blog.devgenius.io/modbus-tcp-communication-with-c-language-and-libmodbus-33527432aef0
https://www.wago.com/global/modbus https://www.m-system.co.jp/mssenglish/service/emmodbus.pdf
https://www.gridconnect.com/blogs/news/modbus-in-a-nutshell https://www.simplymodbus.ca/FC03.htm https://instrumentationtools.com/modbus-ascii-communication-protocol-explained/
https://www.automatas.org/modbus/intr7.html https://apmonitor.com/dde/index.php/Main/ModbusTransfer
https://control.com/technical-articles/introduction-to-modbus-and-modbus-function-codes/
https://www.automationdirect.com/microsites/clickplcs/click-help/Content/214.htm
https://cdn.lantronix.com/wp-content/uploads/pdf/Modbus_Protocol_UG_Rev_J.pdf
https://www.drifton.eu/upload_dir/shop/slangepumper/manuals/Lab-V-Series-MODBUS-Protocol.pdf
https://www.wemakeiot.com/application-areas-modbus-protocol/
https://www.wago.com/us/modbus https://www.protoconvert.com/technicalresourses/tutorials/modbus.aspx https://github.com/aldas/modbus-tcp-client/blob/master/README.md
https://www.laurels.com/downloadfiles/Modbus-Manual-CTR.pdf
https://www.advantech.com/en-us/resources/white-papers/5d094a3b-9c70-48fa-ae48-580d351fa42d
https://www.machinemetrics.com/connectivity/protocols/modbus
https://mblogic.sourceforge.net/mbapps/ModbusBasics-en.html
https://www.picotech.com/library/oscilloscopes/modbus-serial-protocol-decoding
https://worldofinstrumentation.com/understand-modbus-protocol-with-practical-example/
https://www.watelectronics.com/modbus-working-function-codes/
https://www.home-assistant.io/integrations/modbus/
https://apollo3zehn.github.io/FluentModbus/
https://www.mindsmapped.com/what-is-modbus-protocol/
https://service.rotronic.com/manual/modbus-definitions.html
https://metacpan.org/pod/Protocol::Modbus https://www.symmetryelectronics.com/getmedia/29ab0d63-d607-45be-aca2-5890dfeb7adb/modbus_protocol_ug.pdf
https://support.redlion.net/hc/en-us/articles/360021391791-Modbus-Primer
https://docs.rs/tokio-modbus/latest/tokio_modbus/
https://www.typhoon-hil.com/documentation/typhoon-hil-software-manual/References/modbus_device.html
https://www.zabbix.com/integrations/modbus https://open4tech.com/application-modbus-protocol-microcontrollers/ https://www.stssensors.com/wp-content/uploads/2020/11/PTM-Modbus-communication-example.pdf
https://pps2.com/smf/index.php?topic=31.0
https://d2000.ipesoft.com/blog/communication-modbus-protocol/ https://theautomization.com/what-is-modbus/
https://arduinogetstarted.com/tutorials/arduino-modbus
http://www.cromptonusa.com/rs485_guide.pdf
https://www.yoctopuce.com/EN/article/a-quick-tutorial-on-rs485-and-modbus
https://www.campbellsci.com/blog/access-live-measurement-data-using-modbus
https://www.senvainc.com/catalog/documents/downloadcenter/EM-RS485%20Modbus%20Protocol%20Guide.pdf
https://www.atal.nl/media/downloads/mn/wir/Modbus_Protocol_P1C3.pdf
https://www.virtual-serial-port.org/articles/modbus-ascii-guide/
https://www.andivi.com/modbus-rs485-protocol-guide/
https://trace.tennessee.edu/cgi/viewcontent.cgi?article=1186&context=utk_gradthes
https://cdpstudio.com/manual/cdp/modbusio/modbus-io-servers.html https://stackoverflow.com/questions/29602698/create-a-simple-client-server-using-modbus-in-c
https://wingpath.co.uk/modbus/modbus_extensions.php https://www.rotork.com/uploads/documents-versions/20213/1/pub059-003-00_0115.pdf
https://www.csimn.com/CSI_pages/Modbus101.html
https://www.protoconvert.com/technicalresourses/tutorials/modbus.aspx
https://www.lammertbies.nl/comm/info/modbus
https://www.solisplc.com/tutorials/modbus
https://revolutionpi.com/tutorials/modbus-tutorial/
https://www.micronor.com/products/files/AN112/AN112_NIModbusTutorial.pdf
https://www.rfwireless-world.com/Tutorials/Modbus-Protocol-tutorial.html https://ipc2u.com/articles/knowledge-base/modbus-rtu-made-simple-with-detailed-descriptions-and-examples/
https://controllerstech.com/understanding-modbus-protocol/
https://www.sys-tek.co.uk/web-cont1001/uploads/Modbus-Tutorial.pdf
https://docs.arduino.cc/tutorials/opta/getting-started-with-modbus-rtu
https://www.rtautomation.com/rtas-blog/four-things-beginners-should-know-modbus/
https://en.wikipedia.org/wiki/Modbus
https://camatsystem.com/wp-content/uploads/2015/12/Modbus-manual-TD80.pdf
https://modbus.org/docs/PI_MBUS_300.pdf
https://controllerstech.com/stm32-reads-holding-and-input-registers/
https://arduinogetstarted.com/tutorials/arduino-modbus
https://www.udemy.com/topic/modbus/
https://www.se.com/us/en/faqs/FA168406/
https://www.ni.com/en-us/shop/labview/introduction-to-modbus-using-labview.html
https://esp32io.com/tutorials/esp32-modbus
http://stevesnoderedguide.com/node-red-modbus
https://www.eltima.com/article/modbus-vs-rs485/
https://www.prosoft-technology.com/kb/assets/intro_modbustcp.pdf
https://www.typhoon-hil.com/videos/learn-to-use/tutorial-modbus-server-link-manipulation/
http://www.senanetworks.co.kr/download/tutorial/tech_Modbus_v1r0c0.pdf
https://downloads.imopc.com/i3_modbus_master_tutorial.pdf
https://velocio.net/modbus-example/
https://cdpstudio.com/manual/cdp/modbusio/modbusdemo.html
https://www.industrialcontroldirect.com/pdf/i3_modbus_slave_tutorial.pdf
https://www.com-port-monitoring.com/how-to-read-modbus-data/
https://www.alicat.com/using-your-alicat/faq-modbus/
https://www.modbustools.com/mbpoll-user-manual.html
https://mschoeffler.com/2019/11/02/sunspec-tutorial-part-i-modbus/
https://planet-cnc.com/modbus-communication-with-huanyang-vfd-part1/
https://www.virtual-serial-port.org/articles/modbus-vs-rs485/
https://docs.pycom.io/tutorials/hardware/modbus/
https://www.openhab.org/addons/bindings/modbus/
https://ccipower.com/content/modbus-tcp-setup
https://openautomationsoftware.com/knowledge-base/how-to-view-modbus-web-browser/
https://www.beka.co.uk/vdo_006_modbus_rtu_displays_tutorial.html
https://www.intelligentactuator.com/modbus-serial-communication/
https://docs.inductiveautomation.com/display/DOC80/Connecting+to+Modbus+Device
https://www.automationplus.it/docs/Endress%2BHauser/documentazione/files/Source/PDF/BA037SEN.PDF
https://minimalmodbus.readthedocs.io/en/stable/
https://docs.factoryio.com/tutorials/codesys/setting-up/codesys-mb-sp16/
https://www.instructables.com/How-to-Use-Modbus-With-Raspberry-Pi/
https://www.renesas.com/us/en/document/mah/renesas-r-in32m3-series-users-manual-modbus-stack-rev104
https://www.fernhillsoftware.com/help/drivers/modbus/index.html
https://www.simplymodbus.ca/TCP.htm
https://github.com/ljean/modbus-tk
https://www.aggsoft.com/serial-data-logger/tutorials/modbus-polling-1.htm https://www.machsupport.com/forum/index.php?topic=38560.0
https://www.t-uk.co.uk/videos/modbus-rtu/ http://www.iccdesigns.com/software/43-icc-modbus-master-tool.html
https://nl.mathworks.com/help/icomm/modbus.html
https://sunspec.org/sunspec-modbus-specifications/
https://www.circuits-diy.com/modbus-arduino-tutorial/ https://www.npmjs.com/package/modbus-serial
https://community.victronenergy.com/questions/78971/home-assistant-modbus-integration-tutorial.html
https://flows.nodered.org/node/node-red-contrib-modbus
https://forums.temcocontrols.com/t/modbus-tcp-read-analog-io-tutorial/625
https://help.dragandbot.com/modules/protocols/modbus/02_siemens_modbus_server.html
https://www.loxone.com/enen/kb/focus-series-modbus-mvhr-control/
https://wiki.teltonika-networks.com/view/How_to_simulate_Modbus_serial_communication
https://nmap.org/nsedoc/scripts/modbus-discover.html
https://accautomation.ca/node-red-modbus-rtu-tcp-communication/
https://control.com/forums/threads/modbus-for-deep-sea-7420-mkii-tutorial-and-protocol.48239/
https://www.comfortclick.com/BOS/KnowledgeBase/Modbus
https://maker.pro/raspberry-pi/tutorial/a-custom-rs485-hat-to-use-modbus-with-raspberry-pi
https://labjack.com/pages/support/?doc=%2Fsoftware-driver%2Fdirect-modbus-tcp%2Fgetting-started
https://www.codeproject.com/Articles/20929/Simple-Modbus-Protocol-in-C-NET-2-0
https://www.mesta-automation.com/modbus-with-c-sharp-libraries-examples/
http://www.scadasoftware.net/scada/modbusrtututorial.html
https://www.wexoe.dk/aiovg_videos/set-up-ethernet-ip-to-modbus-tcp-gateway/page/7
http://pdacontrolen.com/tutorial-esp8266-12e-modbus-rtu-master/
http://www.ioserver.com/modbus.html
https://learn.microsoft.com/en-us/azure/iot-edge/deploy-modbus-gateway?view=iotedge-1.4
https://denkovi.com/Documents/USB-16-Relay-ModBus-RTU/current-version/UserManual_USB16_ModBus.pdf
https://www.iqhome.org/modbus-tcp-manual-for-plc-applications
https://forum.huawei.com/enterprise/en/modbus-tcp-guide/thread/789585-100027
https://realpars.com/modbus-protocol/
https://www.fleaplc.it/index.php/tutorials/5-simatic-open-modbus-tcp-tutorial
https://www.hw-group.com/software/hercules-setup-utility
https://learn.sparkfun.com/tutorials/how-to-install-ch340-drivers/all
https://prometheus.io/docs/instrumenting/exporters/
https://www.geeksforgeeks.org/introduction-of-zigbee/
https://randomnerdtutorials.com/
https://sondakhaber.com/#1371916-modbus4j-git
https://inhandgo.com/blogs/articles/what-is-modbus-and-how-does-it-work-in-the-industry
https://www.elprocus.com/what-is-modbus-working-its-applications/
https://www.automation.com/en-us/articles/2012-1/introduction-to-modbus
https://www.predig.com/whitepaper/introduction-to-modbus-serial-communication
https://www.miinet.com/images/pdf/articles/Using_MODBUS_for_Process_Control_and_Automation.pdf https://www.dewetron.com/2021/01/what-is-modbus-and-how-does-it-work/
https://www.rtautomation.com/technologies/modbus-rtu/
https://www.dpstele.com/modbus/index.php
https://www.paessler.com/it-explained/modbus
https://www.ziprecruiter.com/Jobs/Modbus
https://www.acromag.com/modbus-tcp-ip-for-ethernet-i-o/
https://www.watelectronics.com/modbus-working-function-codes/
https://www.indeed.com/jobs?q=Modbus&from=mobRdr&utm_source=%2Fm%2F&utm_medium=redir&utm_campaign=dt
https://control.com/forums/threads/different-manufacturers-same-modbus-rtu-syntax.50200/
https://www.trianglemicroworks.com/products/source-code-libraries/modbus-scl-pages/overview
https://www.modbus.org/faq.php
https://affinityenergy.com/modbus-gateway-integrating-legacy-modbus-serial-devices/
https://www.upwork.com/freelance-jobs/modbus/
https://docs.arduino.cc/learn/communication/modbus
https://www.kvaser.com/about-can/higher-layer-protocols/modbus/
https://docs.adaptive-vision.com/current/studio/technical_issues/ModbusCommunication.html
https://evalan.com/modbus-gateways-connecting-modbus-tcp-and-rtu-devices/
https://new.abb.com/drives/connectivity/fieldbus-connectivity/modbus-tcp
https://www.intesis.com/products/protocol-translator/modbus-gateways
https://www.brainboxes.com/faq/what-is-modbus
https://www.anybus.com/technologies/industrial-ethernet/modbus-tcp
https://www.naukri.com/modbus-jobs
https://www.orientalmotor.com/network-products/modbus-rtu-network-products.html
https://www.controlbyweb.com/x404/
https://www.aggsoft.com/modbus-gateway/
https://www.vtscada.com/help/Content/D_Tags/Dev_ModiconTags.htm
https://devicebase.net/en/schneider-electric-modbus-tcp/questions
https://www.vaisala.com/en/blog/2021-11/getting-set-modbus http://www.tri-plc.com/modbus.htm https://www.dusuniot.com/blog/what-is-the-modbus-protocol-and-how-does-it-work/
https://blog.softwaretoolbox.com/opc-modbus-function-codes
https://github.com/BiancoRoyal/node-red-contrib-modbus
https://www.tecnova.com/blog/how-does-a-modbus-master-and-slave-work
https://www.csimn.com/CSI_pages/Modbus101.html
https://flows.nodered.org/node/node-red-contrib-modbus
https://openautomationsoftware.com/blog/what-is-modbus/
https://www.icpdas-usa.com/Modbus-TCP-Based-Dual-Ethernet
https://www.simplyhired.com/search?q=modbus
https://www.hivemq.com/blog/modbus-tcp-to-mqtt-for-iot-iiot-data-interoperability/
https://www.reddit.com/r/PLC/comments/uo9krx/modbus_rtu_works_on_modbus_poll_but_not_to_hmi/
https://theautomization.com/what-is-modbus-tcp-ip/
https://www.pusr.com/products/modbus-serial-to-ethernet-converters-usr-tcp232-410s.html https://www.hallam-ics.com/blog/why-in-2017-are-we-still-using-modbus
https://dghcorp.com/modbus-overview/
https://www.yoctopuce.com/EN/article/a-quick-tutorial-on-rs485-and-modbus
https://geekinsider.com/what-is-a-modbus-controller-and-how-does-it-work/
https://harksys.com/solutions/iot-device-and-asset-connectivity/what-is-modbus/
https://www.thepyroscope.com/blog/modbus-rtu-verses-modbus-tcp-ip-whats-the-difference/
https://www.ptc.com/en/store/kepware/suites/modbus-suite
https://www.apc.com/ae/en/faqs/FA168406/
https://www.campbellsci.asia/blog/diagnose-modbus-communication
https://automationforum.co/modbus-serial-vs-modbus-tcp-ip/
https://www.mesta-automation.com/modbus-configuration-example-for-an-allen-bradley-micrologix-1400/
https://cdn2.hubspot.net/hubfs/4316198/Whitepapers/FAQ-About-Modbus-Conversion.pdf
https://www.perle.com/lp/modbus-to-ethernet.shtml
https://www.fourfaith.com/industry-news/modbus-tcp-gateway.html
https://www.windmill.co.uk/modbussettings.html
https://www.setra.com/blog/what-is-the-difference-between-bacnet-modbus-and-lonworks
https://www.mathworks.com/hardware-support/modbus-rtu.html
https://profinetuniversity.com/profinet-features/profinet-head-to-head-modbus-tcp/
https://www.engineersgarage.com/how-modbus-protocol-works/
https://community.home-assistant.io/t/modbus-tcp-which-hardware/441823
https://theautomization.com/what-is-modbus-tcp-ip/
https://www.eltima.com/article/modbus-vs-rs485/
https://pymodbus.readthedocs.io/en/latest/readme.html
https://forum.inductiveautomation.com/t/modbus-tcp-issue/18732
http://rapidscada.net/doc/content/latest/en/modules/kp-modbus-slave.html
https://www.facilitiesnet.com/buildingautomation/article/BACnet-LonMark-and-Modbus-How-and-Why-They-Work--7712 https://www.linkedin.com/pulse/modbus-rtu-verses-tcpip-whats-difference-david-bohn
https://www.gilsoneng.com/reference/modbus.pdf
https://medium.com/@saurabh6196/all-about-modbus-understanding-and-implementation-89e30746306c
https://www.speedgoat.com/products-services/i-o-connectivity/protocols/modbus-tcp
https://www.automatedsolutions.com/products/dotnet/ascomm/mb.master.suite.asp
https://www.com-port-monitoring.com/how-to-read-modbus-data/
https://www.myplctraining.com/blog/modbus-communications-getting-started
https://www.virtual-serial-port.org/articles/modbus-vs-rs485/
https://e2e.ti.com/support/interface-group/interface/f/interface-forum/728469/modbus-rtu-protocol
https://www.catec.be/uploads/pdf/Modbus%20Info_2927.pdf
https://www.controlglobal.com/network/industrial-networks/article/11304326/introduction-to-modbus
https://www.mtl-inst.com/images/uploads/TSN_MTL838C_Modbus_Rev_1.pdf
https://www.fernhillsoftware.com/help/drivers/modbus/modbus-protocol.html
https://community.openhab.org/t/modbus-device-wiring/38883
https://www.apgsensors.com/about-us/blog/what-is-modbus-why-does-APG-use-it
https://electrical-engineering-portal.com/correct-cabling-modbus-rs485
https://www.equustek.com/modbus-communication-basics/
https://www.wemakeiot.com/application-areas-modbus-protocol/
http://automatedbuildings.com/news/aug20/articles/gc5/200723125404gc5.html
https://tasmota.github.io/docs/Smart-Meter-Interface/
https://github.com/stephane/libmodbus/blob/master/src/modbus.c
https://www.reddit.com/r/embedded/comments/oxmo3o/which_modbus_c_library_do_you_use/
https://stackoverflow.com/questions/29602698/create-a-simple-client-server-using-modbus-in-c
https://sourceforge.net/projects/modbusc/
https://ecostruxure-building-help.se.com/bms/topics/show.castle?id=13417&locale=en-US&productversion=3.3 https://cboard.cprogramming.com/networking-device-communication/149507-modbus-rtu-c-programming.html
https://www.sealevel.com/product/450e-oem-ethernet-modbus-tcp-to-16-form-c-relay-outputs/
https://github.com/stephane/libmodbus/blob/master/src/modbus-rtu.c
http://docs.ros.org/en/kinetic/api/libmodbus/html/modbus_8c_source.html
http://docs.ros.org/en/kinetic/api/libmodbus/html/modbus_8c.html
https://www.eko-instruments.com/eu/categories/products/accessories/c-box-modbus-interface
https://www.sealevel.com/product/450m-rs-485-modbus-rtu-interface-to-16-form-c-relay-outputs/
https://stepfunc.io/products/libraries/modbus/ https://www.modbus.org/tech.php
https://www.phoenixcontact.com/en-us/products/gatewaysproxies-sck-c-modbus-10pcs-1084335
https://www.phoenixcontact.com/en-pc/products/pv-string-monitoring-module-sck-c-modbus-2901674
https://robustdc.com/index.php?route=product/product&product_id=90
https://www.oryx-embedded.com/doc/modbus__client_8c_source.html
https://manpages.ubuntu.com/manpages/bionic/man7/libmodbus.7.html
https://www.automationdirect.com/microsites/c-more/software-help/Content/334.htm https://shop.marcomweb.it/en/shop-online/fieldbus/modbus-tcp-rtu/nke-watteco-capture-modbus-rs485-lorawan-868mhz-2058-dettagli.html
https://www.modbustools.com/modbus.html
https://www.gegridsolutions.com/multilin/catalog/p485.htm
https://ieeexplore.ieee.org/document/9532619
https://hackage.haskell.org/package/libmodbus
https://jacajack.github.io/liblightmodbus/
https://blog.devgenius.io/modbus-tcp-communication-with-c-language-and-libmodbus-33527432aef0
https://www.acornfiresecurity.com/ccu3c-mxmb-modbus-interface
https://csimn.com/MHelp-VP3-TM/vp3-tm-appendix-C.html
https://www.advantech.com/en/products/gf-5vwk/adam-4068/mod_daeff71f-fb26-4107-bd12-bfa01931a8d6
https://paginas.fe.up.pt/~pfs/recursos/plcs/modbus/sources.html
https://www.embedded-experts.at/en/freemodbus/about/
https://www.adontec.com/pmodbus_e.htm
https://www.adontec.com/pmodbus_e.htm
https://www.fullyautomation.com/product/mitsubishi-qj71mb91-c-modbus-rtu-module-qj71mb91c/
https://www.serverroomenvironments.co.uk/rayleigh-instruments-ri-d35-100-c-modbus-mid-energy-meter
https://pypi.org/project/modbus/
https://docs.myostat.ca/display/MYOS/Getting+Started
https://readthedocs.org/projects/pymodbustcp/downloads/pdf/latest/
https://www.datexel.com/thermocouple-modbus-converter-dat3016.html
https://ctlsys.com/support/how_to_compute_the_modbus_rtu_message_crc/
https://softwarerecs.stackexchange.com/questions/83740/modbus-rtu-c-c-opensource-library
https://control.com/forums/threads/finding-modbus-c-source-code-for-avr.15770/
https://www.intelligentactuator.com/pdf/controller-manuals/MODBUS(ME0162-10B).pdf
https://pymodbustcp.readthedocs.io/en/latest/quickstart/index.html
https://www.moxa.com/en/spotlight/protocol-gateways/modbus-protocol-gateway/products
https://www.fernhillsoftware.com/help/drivers/modbus/modbus-protocol.html
https://www.modbustools.com/modbus.html
https://unserver.xyz/modbus-guide/
https://camatsystem.com/wp-content/uploads/2015/12/Modbus-manual-TD80.pdf
https://controllerstech.com/understanding-modbus-protocol/ https://www.m-system.co.jp/mssenglish/service/emmodbus.pdf
http://irtfweb.ifa.hawaii.edu/~smokey/software/about/sixnet/modbus/modbus_protocol.pdf
https://en.wikipedia.org/wiki/Modbus
https://modbus.org/docs/PI_MBUS_300.pdf https://realpars.com/modbus-protocol/
https://www.lammertbies.nl/comm/info/modbus
https://www.se.com/us/en/faqs/FA168406/
https://docs.arduino.cc/learn/communication/modbus
https://development.libelium.com/modbus_networking_guide/code-examples-and-extended-information
https://ozeki.hu/p_5854-modbus-rtu.html
https://www.prosoft-technology.com/kb/assets/intro_modbustcp.pdf https://www.automation.com/en-us/articles/2012-1/introduction-to-modbus
https://www.dpstele.com/modbus/index.php
https://www.predig.com/whitepaper/introduction-to-modbus-serial-communication
https://www.mathworks.com/help/icomm/ug/modbus.html
https://www.promotic.eu/en/pmdoc/Subsystems/Comm/Protocol/Modbus.htm
https://docs.zephyrproject.org/3.1.0/services/modbus/index.html
https://docs.espressif.com/projects/esp-idf/en/v3.2.5/api-reference/protocols/modbus.html https://www.modbusdriver.com/doc/mbusslave.net/examples.htm
https://ctlsys.com/support/common_modbus_protocol_misconceptions/