The ability to remotely access data is very convenient. You can save time by avoiding trips to your application site when you can check system status, close a valve, adjust temperature, or turn off lights from a remote location. You can also save money on travel costs or major repairs by setting up your system to send alarms via email or text message before damage—such as flooding—can occur.
With KingView Runtime and KingView Web Publishing running on a PC, you can remotely access your system via a web browser. You can view the system just as if you were at the PC. This allows you to switch SCADA screens, generate reports, view trend curves, monitor status such as temperature or process stages, and open or close valves or shut systems off.
A cellular router such as the IR711GS55 allows remote access to your systems. You can establish a Virtual Private Network (VPN) using cellular routers and access your PLCs via Ethernet, RS-232, or RS-485. Cellular routers provide practical device management and help reduce maintenance costs.
The GT-531 is an intelligent Modbus SMS/GSM gateway for M2M applications. It allows you to send and receive SMS messages between phones, a PC, and your control system. You can send messages to up to 256 mobile phones. The content of the text messages can be modified through Modbus Protocol.
A programmable automation controller such as the G-4500P-3GWA, which includes a built-in tri-band 3G modem, enables easy remote access. You can write programs that allow the system to send and receive text messages and emails for status updates or remote changes.
The G-4500P-3GWA also includes GPS functionality, making it ideal for applications on moving vehicles like trains and trucks, where you can remotely retrieve real-time GPS coordinates.
You can also gain remote access using an Ethernet-based Data Acquisition Module that supports Modbus TCP, such as the ET-7019, which includes a built-in web server.
You can access it via a web browser using its IP address. Through the Web HMI, you can create users with passwords, turn channels on or off using web page controls, and view current, voltage, or thermocouple input status. It can also be integrated easily with SCADA software through Modbus TCP.
