E-Mon E50-6003200R*KIT - Manual (Page 32)

CLASS 5000 METER
62-0392-03 32
6.12 Connecting Class 5000 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.
Fig. 17. Connecting Class 5000 Meters to the USB Key using RS485.
PC WITH USB PORT
USB KEY
M33406
UP TO 52, CLASS 5000
METERS, ON RS485 CABLING
UP TO 4000 FEET TOTAL
RS485 CABLE LENGTH