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CONNECTIVITY
The integral RS485 Serial Port (CN2 on the DRV40 PCB) can be used to
connect directly to Building Management Systems (BMS) which operates on a
Modbus RTU protocol.
See 'Options' screen for details on how to enable DRV40 for Modbus.
Modbus
When congured for Modbus the DRV40 becomes a Remote Terminal Unit (RTU).
When connected directly to a BMS using Modbus RTU, the DRV40 will be assigned
a unique network address which is programmed via the integral DB9 external port.
A separate 'Guide to Rada DRV Modbus Networking' is available from our
website www.radacontrols.com/DRV40
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