E-Mon E50-6003200R*KIT - Manual (Page 26)

CLASS 5000 METER
62-0392-03 26
NOTE: When the E-Mon Energy™ software is accessed on the computer, a third
LED (RS232 READY) will turn on. This indicator will light up as soon as the
E-Mon Energy software is booted up and the correct COM port is set up via
the settings provided in the software’s Locations menu.
6.8.3 Connecting Class 5000 Meters to the RS-232 Key using
RS-485
On the rear panel of the RS-232 key, there are three jacks labeled as channels A, B
and C. These are RS-485 serial communications ports used to connect the meters.
Each of these channels can be connected to as many as 52 individual meters over a
total cable distance of 4,000 feet. The channels are independent and must not be
connected to each other.
Modular Plug Method
This simple method requires using 4 stranded conductors inside a cable that is fitted
with an RJ-11 type plug for 4-conductor modular systems at each end of the cable.
*Do not use any pre-made telephone cables.
1. Plug the 4-wire RJ-11 cable/plug assembly into Channel A on the RS-232 key.
Connect the other end of this cable to the meter via the RS-485 port, (PORT 2)
at the bottom right of the Class 5000 meter main power board.
NOTE: The total combined cable length must not be more than 4000 feet.
2. Each meter has one yellow (TX) and one green (RX) LED located on the right
side of meter board just below the ribbon cable. If the system is properly wired,
these two LEDs will be OFF. These LEDs will fl ash when the computer and
meter are communicating.