BRX Do-More PLC Counters
A majority of the programmable logic controller (PLC) programs will include a counter instruction. The BRX Do-More series of programmable logic controllers have several different counters available for your program. There are five different basic counter instructions in the PLC. The memory area for counters (CT) includes the Counter PVs (Present Values) Counter SVs (Set Values), and the Counter Completion Flags. The default size of the counter area is CT0 – CT255. This size can change to the amount that we need for our program. Please see BRX Do-More PLC Numbering Systems and Addressing on how to change the memory configuration of the controller.
https://accautomation.ca/brx-plc-numb...
We will be looking at the counter instructions in the BRX PLC along with some programming examples. As a system integrator, this ability can prove very useful to you in the field when commissioning your automation system. When dealing with counters, we need to look at timing charts. The Secret of Using Counters is a good refresher on using timing charts.
https://accautomation.ca/the-secret-o...
Let’s get started with the BRX Do-More PLC Counters.
More information can be obtained at our website. This includes all of the links mentioned in this video.
https://accautomation.ca/brx-plc-coun...
Previously in this BRX Do-More Series PLC, we looked at the following:
System Hardware
https://accautomation.ca/brx-plc-syst...
System Hardware Video
• BRX Do-More PLC System Hardware
Unboxing Video
• BRX Do-More Series PLC Unboxing
Installing the Software
https://accautomation.ca/brx-plc-inst...
Installing the Software Video
• BRX Do-More PLC Installing the Software
Establishing Communication
https://accautomation.ca/brx-plc-esta...
Establishing Communication Video
• BRX Do-More PLC Establishing Communic...
Updating Firmware Video
• BRX Do-More PLC Updating Firmware
Numbering Systems and Addressing
https://accautomation.ca/brx-plc-numb...
Numbering Systems and Addressing Video
• BRX Do-More PLC Numbering Systems and...
First Program
https://accautomation.ca/brx-plc-firs...
First Program Video
• BRX Do-More PLC First Program
Monitoring and Testing the Program
https://accautomation.ca/brx-plc-moni...
Monitoring and Testing the Program Video
• BRX Do-More PLC Monitoring and Testin...
Online Editing and Debug Mode
https://accautomation.ca/brx-plc-onli...
Online Editing and Debug Mode Video
• BRX Do-More PLC Online Editing and De...
Timers
https://accautomation.ca/brx-plc-timers
Timers Video
• BRX Do-More PLC Timers
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 an 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