The site works independently
Local measurements, commands and algorithms continue when the remote connection drops.
Local control with centralized monitoring when a connection is available.
Internet links at remote sites can be intermittent. PLC200 keeps I/O, FX logic, PID and its Web interface running on site. When required, an outgoing Web Tunnel connects the controller to a central portal on Windows or FreeBSD, without a static public IP or inbound ports at the site.
Local measurements, commands and algorithms continue when the remote connection drops.
The portal can provide access to the built-in Web HMI/SCADA interface of a selected controller.
A central SCADA can use Modbus TCP access to multiple controllers through the portal.
With microSD installed, daily SQLite archives keep measurements for later review.
Controllers handle local control at pumping, energy or measurement sites. Each establishes an outgoing connection to a central portal. Operators open the Web interface for a selected site, while the central SCADA can read Modbus TCP data. Access rights follow the project design.