BRX Do-More PLC Modbus ASCII Protocol

We will now look at the do more plc modbus ascii protocol communication. This will be done through PLC ladder logic sending ASCII characters out the serial port. More information can be obtained on our website. This includes all of the links mentioned in this video. https://accautomation.ca/brx-do-more-plc-modbus-ascii-protocol Modbus is a communication method used for transmitting information over serial lines between electronic devices. The device requesting the information is called the Modbus Master (Client) and the devices supplying information are Modbus Slaves (Servers). This protocol was originally developed by Modicon systems. Modbus protocol comes in basically three different types. Ethernet (Modbus TCP) or Serial (Modbus RTU or Modbus ASCII). Modbus TCP and Modbus RTU come as standard protocols in the BRX Do-More series of PLCs. We will connect the BRX Do-More PLC to a Solo process temperature controller. This will be done using the Modbus ASCII protocol over serial RS485 communication wire. (Media) The present and set values (PV / SV) will be read from the Solo controller and the set value will be written when required. Let's get started. The entire BRX Series PLC can be found at the following location: https://accautomation.ca/series/brx-do-more-plc/ Here are some of the individual posts with video links: Installing the Software https://accautomation.ca/brx-plc-installing-the-software https://youtu.be/iFI1ebP8Zkk Establishing Communication https://accautomation.ca/brx-plc-establishing-communication https://youtu.be/shU5g8MA8VM Numbering Systems and Addressing https://accautomation.ca/brx-plc-numbering-systems-and-addressing https://youtu.be/-GiKnIDycKY First Program https://accautomation.ca/brx-plc-first-program https://youtu.be/ANSNhdlm_Ao Online Editing and Debug Mode https://accautomation.ca/brx-plc-online-editing-and-debug-mode https://youtu.be/77pemu3zXrE Timers https://accautomation.ca/brx-plc-timers https://youtu.be/0qU9kgunPi4 Serial Communication – Modbus RTU to Solo Process Temperature Controller https://accautomation.ca/brx-plc-serial-communication-modbus-rtu-to-solo-process-temperature-controller https://youtu.be/PndrIfBImGQ Data Logging https://accautomation.ca/brx-plc-data-logging https://youtu.be/OBv7XJ9mJeA Email – Text SMS Messaging Gmail https://accautomation.ca/brx-plc-email-text-sms-messaging-gmail https://youtu.be/0L74qOwwWAE Secure Email Communication https://youtu.be/hhVawCL3ztU AdvancedHMI Communication – Modbus TCP https://accautomation.ca/brx-plc-advancedhmi-communication-modbus-tcp https://youtu.be/1TjsdLwTKM0 PID with PWM Output https://accautomation.ca/brx-plc-pid-with-pwm-output https://youtu.be/wUNSv-0e5Rc PID Ramp Soak Profile https://accautomation.ca/brx-plc-pid-ramp-soak-profile https://youtu.be/RVOnDwFi1cc BRX Do-More Simulator MQTT Publish-Subscribe https://accautomation.ca/brx-do-more-simulator-mqtt-publish-subscribe https://youtu.be/assMcr7caa8 BRX Do-More PLC MQTT Communications https://accautomation.ca/brx-do-more-plc-mqtt-communications https://youtu.be/Tjtrxh1K-b4 BRX Do-More PLC to Stride Field IO Modbus TCP https://accautomation.ca/brx-do-more-plc-to-stride-field-io-modbus-tcp https://youtu.be/y4K5OwRBFB8 BRX Do-More PLC Ethernet Remote IO Controller BX-DMIO https://accautomation.ca/brx-do-more-plc-ethernet-remote-io-controller-bx-dmio Modbus RTU TCP Remote IO Controller BX-MBIO https://accautomation.ca/modbus-rtu-tcp-remote-io-controller-bx-mbio BRX Do-More PLC to Modbus TCP RTU Remote IO Controller BX-MBIO https://accautomation.ca/brx-do-more-plc-to-modbus-tcp-rtu-remote-io-controller-bx-mbio https://youtu.be/IjTLE2-azHk There are several reasons why we are using the BRX Series Controller. Here are just a few. - Standalone PLC with built-in I/O - Built-in Data Logging - Communication ability - Ethernet Port, RS232, RS485, USB - support for protocols such as Modbus RTU, Modbus TCP, ASCII, K-sequence (DirectLOGIC users), Custom Protocols (ASCII over serial, TCP or UDP over Ethernet) - Built-in Analog input and output - Integrated motion control - High-speed counters - Powerful instruction set (Video of Instructions in software) - Ability to expand the system with a variety of modules - Part of the Do-More series of PLCs which use the same free software. (Do-More Designer) - Integrated simulator in the software capable of external communications for testing The BRX series of programmable logic controllers consist of four different units. They differ depending on the Inputs and Outputs built into the unit and if it has the ethernet port. No I/O Micro PLC unit – (BX ME) 10 Point Micro PLC unit – (BX 10/10E) 18 Point Micro PLC unit - (BX 18/18E) 36 Point Micro PLC unit - (BX 36/36E) These CPUs (Central Processing Units) are also known as MPU (Multi-Processing Units) because of the communication capabilities. https://www.accautomation.ca