Connect your assets
There are many ways to connect an asset with IoTs and there is a solution for any scenario.
Let’s dive into some of the most common situations.
Things to know
Here are some key things you should know before connecting your asset with an IoT.
- Most machines have a communication interface. Find the machine’s user manual and look for the protocols listed on this page.
- You don’t need to retrofit any costly sensors onto your machine. Start simple, monitor the signals that are already available, and take action when the machine tells you to! In most cases this will be enough to eliminate machine breakdowns and costly production downtime.
- Who likes to drive to a site only to find out that the asset has been moved? If your machine is mobile, we can recommend specific hardware that allows you can to track its location.
Digital & analogue signals
Digital and analogue signals are the most common signals that can be harvested from an industrial asset.
Digital signals are binary (0 or 1) and the IoT device’ inputs can be configured as follow:
- WET: 0VDC is detected as logical “0”; 24VDC is detected as logical “1”
- DRY: is detected as logical “0” when the input is shorted to GND; otherwise is detected as logical “1”
Digital outputs are available from configurable controllers, relays, auxiliary contacts, (…)
Analogue signals are not a constant voltage signal unlike digital signals. The commonly used analogue signals are 4-20mA signal and 0-10Vdc Signal. Depending on the field conditions the output signal can vary between 4-20mA or 0-10Vdc. For Example, if you are monitoring a temperature of oil flowing through a cooler using a temperature transmitter of range 0-200 °C, the transmitter will give a signal between 4 and 20mA proportional to the temperature in the cooler.
Analogue signals are available from configurable controllers and sensors.
Modbus RTU is an open serial protocol derived from the Master/Slave architecture originally developed by Modicon (now Schneider Electric). Our IoT devices support RS485 and RS232 protocols.
The Modbus RTU protocol uses a Master/Slave technique to communicate between devices. The Master is the IoT device and the Slaves are the industrial machines.
RS485 supports multiple slaves while RS232 supports only one slave.
To use the Modbus RTU protocol, your machine must have a Modbus RTU communication. The datasets available from your machine are programmed from your manufacturer and we keep an updated list of known manufacturers/machine in our library.
Modbus TCP (also Modbus TCP/IP) is simply the Modbus RTU protocol with a TCP interface that runs on Ethernet.
A Programmable Logic Controller (PLC) is an industrial computer adapted for the control of manufacturing processes, such as assembly lines or robots.
PLCs are modular and can be designed for many arrangements of digital and analog signals, and they can be monitored by connecting an Edge Compute Device to your PLC network.