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Bacnet Wiring - Honeywell 3400 Installation Instructions Manual

E-mon series, advanced kwh/demand meter with communications.
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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 3400 Meters to the 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.
PC WITH USB
Fig. 16. Connecting Class 3400 Meters to the USB Key using RS485.
USB KEY
31
E-MON CLASS 3400 METER
UP TO 52, CLASS 3200
METERS, ON RS485
CABLING
UP TO 4000 FEET
TOTAL RS485 CABLE
M34372
62-0398—02

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