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Analog Click Click PLUS Inputs PLC PLC Basics PLC Learning Sensors

Click PLC Analog Input Non-Linear Scaling

The Click PLC has automatic linear scaling for the analog inputs and outputs. What if the analog input or output is not linear? How do you handle this in the PLC? Look at the following tank. We can measure the height, which is linear, but the volume will not because of the shape of the tank.
Click PLC Analog Input Non-Linear ScalingWe will look at an application to determine the volume in this tank. This will be based on the height of the liquid in the tank. We will then scale this non-linear volume of the tank to display the actual volume. Let’s get started.

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Articles BRX Do-More Counters Do-More Do-More Designer Inputs Outputs PLC PLC Basics PLC Learning Scan Timers

Timing Diagram NOT Just Used for a Timer

Logic circuits in a PLC ladder logic program are either on or off. The inputs change, which will affect the outputs. This can be expressed in a timing diagram. The timing diagram or chart will show you how the ladder logic program will respond to the changing states of the inputs and outputs.
Timing Diagram NOT Just Used for a Timer
This visual method is an excellent way of understanding how the PLC ladder logic functions. We will discuss a timing diagram and how it is used for timers, counters, and ladder logic. This will help in understanding or troubleshooting your PLC programs. Let’s get started.

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BRX Do-More Communication Do-More Do-More Designer EasyPLC EasyPLC Machine Simulator Modbus TCP PLC PLC Basics PLC Learning

EasyPLC Machining Center Loading Robots

The EasyPLC machining center loading robots will demonstrate sequencing and robot control using a PLC. Two input lines feed blanks to the robot. The robot will alternate taking the blanks and putting them into the CNC (Computer Numerical Control) machine. The robot moves the piece to the finished conveyor when the part has been machined. A three-axis robot loader will pick up the part and place this in a storage box on the roller conveyor.
EasyPLC Machining Center Loading RobotsUsing the five steps for PLC program development, we will discuss and show you how to program this EasyPLC machining center. This will involve all the ladder logic to load and unload using the robot simulator. This PLC simulator will show sequencing and drum instruction programming using timers and events. An Automation Direct BRX Do-More PLC is used for this application, but the general methods can be used for just about any PLC on the market. Let’s get started.

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Articles Communication Ethernet IP Client Ethernet IP Server HMI Modbus RTU Modbus TCP MQTT PLC PLC Basics PLC Learning

Don’t Get Caught Without These 3 PLC Requirements

If you are looking to purchase a PLC system, there are three key components that you should look for. If your current system does not contain these features, you need to replace it with one that does as soon as possible. The three most important features you should look for in your new PLC system are the open communications protocol, the ability to integrate easily with other methods, and the ability to have remote access. Without these three essential requirements, your PLC system will be far less effective and will be more expensive to operate than it needs to be.
Don't Get Caught Without These 3 PLC RequirementsWe are all data companies that need the information for continued improvement. The industrial internet of things (IIoT) is essential, and the ability to take advantage of this starts with the hardware you specify for your PLC control. PLCs are now considered edge devices. This means that information should be able to be sent and received to the PLC controller when it is required.

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BRX Do-More Counters Do-More Do-More Designer PLC PLC Basics PLC Learning Timers

BRX Do-More PLC High-Speed Input Timer


The High-Speed discrete inputs can be configured to measure the amount of time between pulses. When you want a scaled value representing a speed or rate, the high-speed input timer is a better option for pulse rates below 5 kHz. This is compared to using the high-speed input pulse counting selection.
BRX Do-More PLC High-Speed Input TimerThe BRX Do-More series of programmable logic controllers have built-in high-speed inputs. These inputs can function in Counter, Timer, or Pulse Catch modes. Every CPU will have either 6 or 10 high-speed inputs (HSI) available depending on the model. These inputs can be used for input frequencies from 0 to 250Khz. 250Khz represents 250000 input counts per second that can be coming from devices connected to your PLC like an encoder. Due to the speed of the inputs, they function on the BRX Do-More PLC asynchronous with the PLC scan time.
We will continue looking at the high-speed inputs on our BRX Do-More PLC, by looking at the pulse timer mode. Previously we looked at the high-speed count mode of the PLC. We scaled the count to display RPM (Revolutions per Minute). Scaling the edge trigger timer from our incremental encoder, we will scale and compare the RPM from last time. Let’s get started.

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Communication Database HMI IoT Software MQTT Node-RED PLC PLC Basics PLC Learning

PLC Learning Series – HMI – Interfacing

A human-machine interface (HMI) is present in some form for every PLC. The HMI connects a user to a machine system to exchange information or control data. This interaction with the system can be through hardware or software.
HMIs offer different people information and control in many ways for the automated system. Operators, supervisors, mechanics, electricians, engineers, and programmers all have different needs. The machine HMI(s) must provide or make the information easy for all the people who use the system.
We will now look at some of the ways that human-machine interfaces (HMI) are used in automated systems today. Let’s get started.