Monitoring of salt water aquarium

Hardware:	Notebook, OS Windows
Control stations:	PLC ABB AC500eCO, converter PAPOUCH GNOME485
Date of commission:	2011

The monitoring application is running on a netbook and can also be accessed via Web or mobile phone. The freeware PROMOTIC PmFree licence is used. The application communicates with the PLC by the Modbus protocol. The GNOME485 RS485/Ethernet converter is used. The data is stored in a database that is saved on a local NAS drive.

Topology of the system:

The application consists of the following panels that are accessble via standard Web interface. The main panel

The main panel contains the GUI of the aquarium monitoring system. The status of the main components is signaled by color, the temperature of the water and the pump are displayed as numbers.

Water temperature trend

The trend values are being stored into the Access database.

Alarms

The temperature of the water is the most critical value. Therefore it is permanently monitored and if the temperature level changes beyond the specified levels the alarm is triggered.