Category Archives: PLC Learning

This offers ways in which you can learn PLC programming.

C-More EA9 HMI Series Panel Simulate Project

The C-More HMI Panel programming software has a simulation mode. This simulator will allow you to test your project before transferring it to a panel. Testing your application is a vital step in HMI program development. This feature of the software will save you time and money especially if your hardware is not available.
The simulator will display two windows. There is a graphical display of your HMI panel and a simulation control window. The control window will allow you to control variables in the project similar to a PLC.

We will be looking at our program developed last time (Common Screen Menu) and use the simulator to mimic how the PLC and HMI Panel will communicate in the field. This will help to detect any problems before we transfer to our panel. Let’s get started. Continue Reading!

Wiring a Capacitive Proximity NPN PNP Sensor to the Click PLC

A proximity sensor (switch) is able to detect object presence without physical contact like a limit switch. No physical contact means that the switch has no parts that will wear out. The life span of the sensor is increased with less maintenance.
A capacitive proximity sensor will detect ferrous and non-ferrous objects. The sensor works by oscillating the charge on the plates in the sensor. When an object is placed in front of the surface, the amount of current flow is detected. (Capacitance) The dielectric of objects will determine the distance that the object can be detected.

We will be wiring a capacitive proximity switch into the input of our Click PLC. The CK1-00-2H is an 18mm diameter, NPN/PNP N.O./N.C. selectable output with a 12mm sensing distance. That means that the sensor can be wired as positive (Sourcing) or negative (Sinking) switch. This unshielded 10 Hz switching frequency sensor also has a 4-pin M12 quick disconnect. Let’s get started. Continue Reading!

C-More EA9 HMI Series Panel Common Screen Menu

Allowing operators of your HMI (Human Machine Interface) panel to easily navigate all of the information available is a vital part of programming. We want to present the information to the operator so they will clearly understand the programmed operation of the unit. Common menus on the HMI panel pages will allow the quick navigation, understanding, and control that your operators want. When programming operator interfaces I have always heard to use the KISS method. (Keep It Stupidly Simple.) Your HMI program interface could contain hundreds of pages containing vital information for operator understanding and control, but you must make it easily accessible and intuitive. This is how you design and program a good HMI panel display.

We will be creating a common screen menu for our C-More EA9 HMI Panel using the C-More programming software. Using our previous program created we will be making a background screen to act as our menu system. Let’s get started. Continue Reading!

Wiring an Inductive Proximity NPN PNP Sensor to the Click PLC

A proximity sensor (switch) is able to detect object presence without physical contact like a limit switch. No physical contact means that the switch has no parts that will wear out. The life span of the sensor is increased with less maintenance.
An inductive proximity sensor will detect ferrous metals. The sensor develops an electric field when metal (sensing object) is introduced usually killing the oscillation circuit of the sensor triggering the output.

We will be wiring an inductive proximity switch into the input of our Click PLC. The AM1-A0-4A is an extended range 12mm tubular sensor that can be wired into the PLC as a sink or source input. Let’s get started. Continue Reading!

C-More EA9 HMI Series Panel to PLC and PLC to Panel Settings

The C-More EA9 HMI (Human Machine Interface) Series Panel will communicate to the PLC directly through the tag database that we discovered in our first program. We were able to read and write individual bits in the PLC.

Panel to PLC communications is used to write information into the PLC; like current screen number displayed, good communications, pop-up keyboard, and current language number used in the HMI.

PLC to Panel communications is used by the PLC to control the HMI. Switch to screen number, beep, increment and decrement the Clock by one hour, clear alarm history, clear alarm count, start screen saver and select language are the items you can control in the HMI.

PLC Error is used to communicate internally in the HMI the PLC error state and PLC error code value.
We will be setting up and testing our PLC to Panel and Panel to PLC communications on our EA9 C-More. Let’s get started. Continue Reading!

Wiring Push Buttons and Selector Switch to Click PLC

A push button (pushbutton) is a simple human interface for controlling some aspect of a machine or process. The push button requires a force to push the button to change the electrical operation from off to on or vice versa. The condition of the output is usually momentarily. Some common everyday pushbuttons we use are keyboards keys.

A selector switch is also a mechanical device that will require a force to turn the electrical operation from off to on or vice versa. The selector switch usually locks into a position.

We will be wiring two illuminated pushbutton switches into our Click PLC. A selector switch will also be wired in. Let’s get started. Continue Reading!

Wiring Stack Light to Click PLC

Stack lights are usually modular stackable components that provide a visually illuminated and audible indication for machines, systems, and processes. They are usually located on top of equipment to provide this notification to personnel in the area.

Stack lights are also known as signal tower lights, indicator lights, warning lights, industrial signal lights, tower lights, and light towers.
We will be connecting a Patlite NPS-402-RYGB Super Slim stack light to our Click PLC.

These stack lights come in preassembled units in the most popular combinations of colours with ABS resin main bodies that offer superior impact and heat resistance; double-insulated construction enhances durability and safety. Interchangeable light modules require no rewiring. Let’s get started. Continue Reading!

C-More EA9 HMI Series Panel First Program

We will now put our first program into the C-More EA9 HMI Panel using the C-More programming software. The Do-More Designer Simulator will be used with a modified Start Stop Jog Circuit so we can use our HMI screen to monitor the output as well as control the inputs on the PLC.

Communications will be established to our C-More EA9-T10CL unit and the firmware will be updated. We will then develop our control for our PLC ladder logic circuit.

The PLC logic for our circuit can be found on our post: How to Make a Start / Stop / Jog Circuit in a PLC. The YouTube video can be seen here.
Our C-More EA9 HMI Panel will be communicating to the PLC simulator via Ethernet with the Modbus TCP protocol. Let’s get started. Continue Reading!

C-More EA9 HMI Series Panel System Setup Screens

The C-more touch panels include a series of built-in System Setup Screens that allow you to view detailed information about the panel; adjust certain features; configure communications; test various functions of the touch panel; backup & restore firmware, a recipe, log, and project memory; clear memory and reset all values and conditions back to the original factory defaults.

Information, Setting, Test Menu and Memory make up the four Main Menu setup screens.
Information – The information tabs display details about the touch panel model; the panel’s name; version information for the hardware, boot loader, and firmware; clock source, and beeper status. Other tabs display details on the panel’s internal memory and the status of any external memory devices. Communication port details are available in this area, as well as an error log to help in troubleshooting the system.
Setting – This is the area for making adjustments to the internal clock, adjusting the brightness of the display, setting the IP address adjusting (calibrating) the touch panel, enabling or disabling the internal beep, and enabling or disabling a mouse pointer.
Test Menu – This menu will allow you to test the touch panel, test the display, test the user LED, test the communication ports, and test both the internal beeper or the audio line output. If a speaker with an amplifier is connected, a WAV sound file is a system provided for the audio line output test.
Memory – The Memory menu allows you to either backup or restores your project, log data, recipe data and/or system memory. Selections can be made to backup to optional SD card memory or USB pen drive memory. The menu selections also give you the ability to clear the memory, and there is also a selection to reset all of the touch panel settings back to the original factory defaults.
We will be reviewing these system screens of the C-More HMI Panel. Let’s get started. Continue Reading!

Productivity 1000 Series PLC PID Ramp Soak Instruction

PID Ramp Soak Instruction
The purpose of a ramp soak instruction is to make gradual, controlled changes in temperature (Ramp), followed by a temperature hold (Soak) period.
We will be using our Proportional-Integral-Derivative PID Instruction that we looked at last time to apply the ramp/soak instruction.

Using the immersion heater in a cup of water to keep the temperature at a constant value, we will be adjusting the profile of the temperature as we increase the set point (Ramp) and hold that set point for a predetermined time. (Soak)

We will be modifying our existing program from our PID loop instruction. Let’s get started. Continue Reading!