Tag Archives: click plc programming tutorial

Click PLC Logging Data with Time and Date Stamp




We will now look at logging data with time and date in the Click PLC. The Click PLC can perform indirect addressing. This means that I can ask for information to be moved to and from locations in the PLC using a pointer that will indicate the address.
Indirect Addressing
Stephen Covey in The 7 Habits of Highly Effective People said: “Begin With the End in Mind.” This is especially true when looking at storing or logging data within the programmable logic controller. (PLC) It is important to fully define what you want to accomplish with your program.
Click PLC Logging Data with Time and Date Stamp
In our Click PLC example, we want to take a series of consecutive memory locations (DS1 to DS10) and store them in memory areas DS100 to DS4100 each minute. We will be able to store 400 entries (400 minutes) in our storage area. Every entry will include the real-time clock (RTC) of the Click. This will show the date and time of each entry. Let’s get started! Keep on Reading!

Click PLC PID Instruction and Autotuning

A PID (Proportional, Integral, and Derivative) control is possible with the Click PLC. The Click Programming Software version 2.50 now includes PID. This features 8 full-featured control loops with an easy graphical user interface (GUI). PID will run on all of the Ethernet-enabled Click PLCs.
We will be using this PID along with a Factory IO scene to demonstrate PID control and Autotuning using our Click PLC.
Click PLC PID Instruction and Autotuning using Factory IO
Here are some references on PID control:
PID without a Ph.D. By Tim Wescott
Understanding PID in 4 minutes
PID Control – A brief introduction
PID Controllers Explained
Who Else Wants to Learn about On-Off and PID Control?
Our Factory IO scene will be controlling the level of water in a tank. PID will be used to maintain the level based on a dial pot knob on the control panel. Let’s get started! Keep on Reading!

Click PLC PID using Factory IO (3D)

A PID (Proportional, Integral, and Derivative) control is possible with the Click PLC. A sample program was written for this PLC by Bernie Carlton in the following thread from the Automation Direct Forum. This was based on the math/process presented by Tim Wescott on is paper titled PID without a Ph.D. We will be using this sample program along with a Factory IO scene to demonstrate PID control using our Click PLC.
Click PLC PID using Factory IO
Here are some references on PID control:
PID without a Ph.D. By Tim Wescott
Understanding PID in 4 minutes
PID Control – A brief introduction
PID Controllers Explained
Who Else Wants to Learn about On-Off and PID Control?
Our Factory IO scene will be controlling the level of water in a tank. PID will be used to maintain the level based on a dial pot knob on the control panel. We will also discuss the math that the PID loop uses. Let’s get started! Keep on Reading!

Click PLC Analog Dusk to Dawn Program Example

A dusk to dawn sensor usually is discrete on/off of the lighting control. If we want to vary the lights to mimic more of the sunset and rise, we would use an analog output to control the lights. I was recently asked about such a program. Every day they wanted the lights to go off at 10 pm and come back on at 6 am. At 9:30 pm the lights would be on at 70% or 7volts of a 0-10V signal. In the next half hour, the program will bring the lights from 70% down to 0%. In the morning the lights will come back on within the half-hour from 0% to 70%. Poultry Farms are one place that would utilize this program.
Click PLC Analog Dusk to Dawn Program Example
We will be developing a program that will do this with our Click PLC. Let’s get started! Keep on Reading!

Click PLC High Speed Counting – Part 2

The Ethernet Click PLC high speed counter has seven different modes of operation. In Part 1 we discussed the High Speed Count Mode, Interval Measurement Mode,
Duration Measurement Mode and Frequency Measurement Mode.
Click PLC High Speed Counting – Part 2
This 100 KHz counter can accept Up, Down, Up/Down, Pulse/Direction or Quadrature (with Z) inputs.
We will be looking at the last three different high speed counter modes available in the click. (External Interrupt, Pulse Catch, Filter) This is all setup through a user friendly graphical user interface. We will also combine the Frequency Measurement and the High Speed Count in one application. Let’s get started! Keep on Reading!