Van Essen AS339 Diver-MOD Modbus Interface for Diver RS485 Half-Duplex ABS IP65

The Diver-MOD is the Modbus interface for Divers and is used to connect Divers to an RS485 network using the Modbus/RTU protocol. The Diver-MOD features a barometric sensor, which can be used to convert the Diver pressure in to a water level.

A typical Modbus configuration is illustrated in the figure below. In the schematic, two Diver-MODs are connected to a PC/PLC. This connection includes both data communication and power. The maximum Modbus cable length depends on the baud rate, the cable, the network configuration (2-wire or 4-wire), etc. A maximum length of 1000 meters can be achieved using the right components.

Features:

• The Diver-MOD has a built-in pressure and temperature sensor for measuring air temperature and atmospheric pressure readings.
• Read Diver memory.
• Program the Diver sample interval.
• Start and stop Diver.
• Power is supplied by the Modbus network.

Benefits:

• No need for additional sensors to measure air temperature and atmospheric pressure.
• No need for post-processing the pressure data.
• No internal battery is required.

Applications:

• SCADA Modbus/RS485 networks
• Real-time monitoring of municipal water supplies
• Monitoring water quality and quantity at mine sites
• Monitoring water level and salinity of reclaimed water