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!

Stride MQTT Gateway to Adafruit IO

MQTT protocol is used for machine to machine (M2M), internet of things (IoT) communication. This publish/subscribe messaging is used where limited device resources are available or network bandwidth is low. The MQTT protocol provides small size, low power usage, minimized data packets, and efficient distribution of information to one or many receivers.

The Stride MQTT Gateway is an industrial 4.0 hardware component (IIoT – Industrial Internet of Things) that provides isolation and can easily interface with existing Modbus RTU and Modbus TCP communication protocols.

We will again be connecting a Stride MQTT Gateway to a Solo process temperature controller with Modbus RTU(RS485). The MQTT Gateway will communicate to the Adafruit IO Broker. The broker can display, log and allow us to control the data. This is done in an easily configured interface. 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!

Stride MQTT Gateway Click PLC Modbus RTU TCP

MQTT protocol is used for machine to machine (M2M), internet of things (IoT) communication. This publish/subscribe messaging is used where limited device resources are available or network bandwidth is low. The MQTT protocol provides small size, low power usage, minimized data packets, and efficient distribution of information to one or many receivers.

The Stride MQTT Gateway is an industrial 4.0 hardware component (IIoT – Industrial Internet of Things) that provides isolation and can easily interface with existing Modbus RTU and Modbus TCP communication protocols.

We will be connecting a Stride MQTT Gateway to a Click PLC (Ethernet) via Modbus TCP. Previously we connected the Solo process temperature controller with Modbus RTU(RS485). We will leave this connection in place and add the Click PLC. The MQTT Gateway will communicate with HiveMQ Broker. MQTTBox Client will then read and write to the Click PLC and Solo process temperature controller. 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!

Stride MQTT Gateway Modbus RTU TCP

MQTT protocol is used for machine to machine (M2M), internet of things (IoT) communication. This publish/subscribe messaging is used where limited device resources are available or network bandwidth is low. The MQTT protocol provides small size, low power usage, minimized data packets, and efficient distribution of information to one or many receivers.

The Stride MQTT Gateway is an industrial 4.0 hardware component (IIoT – Industrial Internet of Things) that provides isolation and can easily interface with existing Modbus RTU and Modbus TCP communication protocols.

We will be connecting a Stride MQTT Gateway to a Solo process temperature controller via Modbus RTU. (RS485) The MQTT Gateway will communicate to a Mosquitto Broker. Google MQTTLens (MQTT Client) will then read and write to the Solo process temperature controller. 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!

ACC Automation 2019 Review

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ACC Automation

It is a good time to be in the automation business. Technologies are merging and communicating like never before. What was impossible is now possible for the industrial plant floor. We are looking forward to the New Year and new possibilities for implementing your control solution.
Each year we like to take a few minutes and reflect on the past, current, and future of ACC Automation. You have helped us to build the site that you see today through questions, comments, and suggestions. Thank you.
2019 has been our best year yet thanks to you. Keep on 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!

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