E-MON CLASS 3200 METER
29 62-0397—02
6.11 BACnet MS/TP Wiring
BACnet MS/TP wiring is the same as Modbus and EZ7 wiring. See Sections 10
and 11 for instructions on changing I.D. and IP addresses.
6.12 Connecting Class 320 Meters to USB Key
using RS485
The USB Key plugs into the PC’s USB port and provides a termination point for
the RS485 wiring from the meters. Up to 52 meters can be “Daisy chained” with
up to 4000 feet total RS485 wiring. The USB Key is labeled for “plus (+)”, “minus (-
)“, and ground and the wiring must match the same positions on the meters. If
more than 52 meters are to be monitored, additional USB Keys can be utilized to
connect them to the PC.
Fig. 19. Connecting E-Mon Class 3200 Meters to the USB Key using RS485.
62-0397_C.fm Page 29 Wednesday, May 9, 2018 9:28 AM
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