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EPM 5300 SERIES ADVANCED POWER METERS – INSTRUCTION MANUAL 4–21
EPM 5300 Series Meters
Chapter 4: Communication
Installation
GE Consumer & Industrial
Multilin
Communication Installation
4.1 RS-232C
(This section applies to the RS-232C or RS-485.)
All EPM 5300P and 5200P instruments can be equipped with RS-232C or RS-485
communication.
RS-232C communication links a single instrument with a computer or device such as an
RTU or PLC. Its capability is up to 100 feet. A standard 9-pin female serial port connector
mounts on the instrument for direct connection to a computer with a 9-pin cable.
FIGURE 4–1: RS-232C Communication Connection Installation
Note
To avoid ground loops, the neutral and safety ground (pin 3) should be connected together
at only one point.
DB-9 CONNECTOR
A DIRECT PIN-TO-PIN CABLE CAN BE USED.
NO NULL MODEM IS REQUIRED.
COMMUNICATION
CONVERTER
Model
SF-232DB3
8 9 10 11 12 13
7
6
5
4
3
2
1
20
21
22
23
24
25
26
27
28
RS-232 COMMUNICATION CONNECTION
CONNECTION FOR DB-9 FEMALE
PIN 2 - RECEIVE OF THE HOST/COMPUTER
PIN 3 - TRANSMIT OF THE HOST/COMPUTER
PIN 5 - GROUND OF THE HOST/COMPUTER
54321
98 67
LAPTOP
DETAIL OF DB-9
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