Category Archives: PLC Basics

Click PLC Logging Data with Time and Date Stamp




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.

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.

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!

C-More EA9 HMI Series Headless RHMI Remote Control




Remote access will allow for viewing or controlling the C-More EA9 HMI series. We can use any windows based machine or use the C-More remote HMI App from Apple iTunes store, Google Play or Amazon App Store for mobile devices. This software is available free of charge.

Setting up the EA9 series for remote access and control is done through the C-More programming software to the HMI. We will be downloading the Windows application from the c-more panel. This is done through the web browser of your computer. We will also look at the c-more remote HMI app from Google play. Let’s get started. Continue Reading!

Wiring 3 Wire DC NPN and PNP Sensors




I recently received a question on PNP and NPN sensors. They wanted an explanation of what a sink is and how to wire one. Confusion over the Normally Open and Normally Closed function of the sensor is also a common question. Several diagrams will show a resistor attached to the blue wire and a load across the others, what does it all mean?

It is quite confusing sometimes the language we use for these devices. Sometimes it is the way we talk about the sensor and sometimes about the device we are connecting. (PLC)
We will break it down and go over the wiring to a PLC input. Let’s get started. Continue Reading!

C-More EA9 HMI Series Headless RHMI Setup Screens

The C-more headless EA9-RHMI is programmed using the C-more Programming Software, EA9-PGMSW. The developed project is transferred from the PC to the HMI by either a USB or an Ethernet connection between the two. Previously we used the Ethernet connection to establish communication.

We will be using the USB connection to establish communication, save the program and review the setup screens of the Headless C-more.

Troubleshooting of the USB connection and windows driver will also be discussed. Let’s get started. Continue Reading!

C-More EA9 HMI Series Headless RHMI Panel

The C-More EA9 HMI Panel now comes in a headless version. (EA9-RHMI) All of the great features that are already built into the EA9 are available with the new headless model. This unit can be mounted within the cabinet and you can decide how to display the information.

This user-friendly, time-saving software platform allows your system data to now be shown to the operators in new ways thanks to the C-More headless HMI panel. Capabilities like data logging, FTP (File Transfer Protocol), secure email, remote HMI and data sharing can now be added to existing PLC hardware.

We will be unboxing this EA9-RHMI unit. Once power is supplied to the unit we will then establish communication and save the program. Let’s get started. Continue Reading!

C-More EA9 HMI Series Panel Sending Email

The C-More EA9 HMI Panel through the Ethernet port can send secure email messages. These mail messages with attachments can be sent through a specified mail server.

We will be sending an email using a Gmail account with authentication. This will also include an attached logged data file. We will also discuss how the C-More HMI can send a text (SMS) message. Let’s get started. Continue Reading!

C-More EA9 HMI Series Panel FTP File Transfer Protocol

The C-More EA9 HMI Panel through the Ethernet port can be set up to use FTP (File Transfer Protocol). FTP is a standard network protocol used to transfer computer files between a client and a server on a computer network.
The C-More HMI can be used as an FTP Client or Server depending on your application.
An FTP client can send and receive files from an FTP server site. You will need an FTP Server already set up in your network to use this feature. (Example: FTP Web Server) See the help file in the C-More software for more information on the Cmore FTP Client Setup and use.

The Cmore FTP Server can retrieve data from the C-more memory with requests from the client. The power of this setup is the ability to automate the retrieval of the information using a batch (BAT) file. We will be setting up the FTP Server function and access the data log that we set up previously using a PC as the client. Let’s get started. Continue Reading!

C-More EA9 HMI Series Panel Data Logging

The C-More HMI Panel can log data using the Line Trend Graph or PID Faceplate Trend Graph objects. When Save Log Data is selected on the Options tab configuration for that object, data is written to a “.txt ” file saved to the storage device selected.
Data Logging is commonly used to monitor systems and/or processes taking place at an industrial facility, providing time, date, and current conditions as configured on the Object. Data Logging can be used to collect temperatures, flows, alarms, levels, pressure and just about any instrument measurable condition.

We will be data logging from a Line Trend Graph. A register (word) made up of bits will also be logged. We will log this information every second on our USB stick. Starting/stopping the logging can be controlled on the HMI as well as USB reject. Once the USB is ejected, it can then be connected to our computer to review the files. We will also view and download the files from our web server that we enabled last time on our C-More EA9 HMI panel. Let’s get started. Continue Reading!

C-More EA9 HMI Series Panel Web Server and Remote Access

The C-More HMI Panel can function as a simple web server. A web server includes software and hardware that will respond to World Wide Web client requests. The communication used between client and server takes place using the Hypertext Transfer Protocol. (HTTP). Information generally takes the form of pages that may include images, style sheets and scripts in addition to the page text contents. Remote access will allow for viewing or controlling the C-More EA9 HMI. We can use any windows based machine or use the C-More remote HMI App from Apple iTunes store, Google Play or Amazon App Store for mobile devices.

We will turn on the webserver functionality in our HMI panel. Using a web browser (Chrome), we will connect to our C-More EA9 HMI. We will then download the remote access software from the website. We will then run this remote access software to control our existing HMI program. Let’s get started. Continue Reading!

C-More EA9 HMI Series Panel Barcode Scanner Input

The C-More HMI Panel will support a barcode scanner (barcode reader) input. A scanner uses a light source and a light sensor to translate optical impulses into an electrical signal. The CMore can accept a USB barcode scanner input.

We will now connect and program a barcode scanner into our HMI panel. The PLC ladder logic will then be modified to take action on the barcode input. Let’s get started. Continue Reading!