BRX Do-More Simulator MQTT Publish Subscribe
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Oct 13, 2022
We will now look at the Do-More Simulator MQTT protocol. MQTT stands for Message Queuing Telemetry Transport. It is a simple publish and subscribe communication protocol that does not take too many resources.
Constrained devices with low bandwidth are ideal for MQTT. This protocol provides a machine to machine (M2M) connectivity which is ideal for the Internet of Things. (IoT)
We will be using a free on-line public MQTT broker from HiveMQ. Messages will be published and subscribed to by two clients. The first will be an MQTT Browser Client by HiveMQ. The Do-More Designer Simulator PLC will be the second MQTT Client. Information in the form of bits and words will be published and sent to both clients. Let’s get started.
More information can be obtained on our website. This includes all of the links mentioned in this video.
https://accautomation.ca/brx-do-more-simulator-mqtt-publish-subscribe
The entire BRX Series PLC can be found at the following location:
https://accautomation.ca/series/brx-do-more-plc/
Here are 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
Monitoring and Testing the Program
https://accautomation.ca/brx-plc-monitoring-and-testing-the-program
https://youtu.be/gv3d0vozxac
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
High-Speed IO
https://accautomation.ca/brx-plc-high-speed-io
https://youtu.be/6B5hp_Ri0Ls
Compare Instructions
https://accautomation.ca/brx-plc-compare-instructions
https://youtu.be/CIDVcM0zszE
Math Instructions
https://accautomation.ca/brx-plc-math-instructions
https://youtu.be/ZllosAv0DyY
Program Control
https://accautomation.ca/brx-plc-program-control
https://youtu.be/1fewvxxUyW4
Shifting Instructions
https://accautomation.ca/brx-plc-shifting-instructions
https://youtu.be/FVTxIl8VKmg
Drum Instruction
https://accautomation.ca/brx-plc-drum-instruction
https://youtu.be/ILokPN1Aadk
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
Analog IO – System Configuration
https://accautomation.ca/brx-plc-analog-io-system-configuration
https://youtu.be/WmdbalWwO6E
HTTP JSON Instructions
https://accautomation.ca/brx-plc-http-json-instructions
https://youtu.be/MrCt1STwILU
Analog Dusk to Dawn Program
https://accautomation.ca/brx-plc-analog-dusk-to-dawn-program
https://youtu.be/7mNO7Lhq7y0
INC DEC 512 Registers for DMX512
https://accautomation.ca/brx-plc-inc-dec-512-registers-for-dmx512
https://youtu.be/jCGw9i6qbHk
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
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 communication capabilities.
https://www.accautomation.ca
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