The Snooper PD865 is an 1/8 DIN Modbus® meter that can be programmed as a Modbus® RTU master, slave, or snooper.

In snooper mode, the PD865 listens to the Modbus traffic and displays a process variable being transmitted on the bus.

As a master, the Snooper can read up to 8 Modbus variables; it will display one and make the other variables available for other Snoopers to display in snooper mode.

As a slave, a Modbus variable may be written to the PD865 by a Modbus master.

The PD865 is available with two (2) relays, 4-20 mA analog output, and multi-pump alternation control.

• Snooper Mode: Listening for the PV you want
• Proxy Polling Mode: Poll up to 8 PVs
• RS-485 Modbus® RTU input
• Six full digits 999,999
• Master, Slave, or Snooper mode
• Sunlight readable LED display
• Scale in engineering units
• 16-point linearization
• Square root & programmable exponent
• Exact display of input data
• 4-20 mA analog output option (Modbus to 4-20 mA)
• Two Form A relays standard
• Two Form C relays option
• Up to four pump alternation control
• Universal power supply