CHAPTER 5: COMMUNICATION WIRING RJ11 (TELEPHONE LINE) CONNECTION—EPM METER WITH INTERNAL MODEM OPTION (COMM
OPTION 2) TO A PC
EPM 9450/9650 ADVANCED POWER QUALITY METERING SYSTEM – INSTRUCTION MANUAL 5–9
5.4 RJ11 (Telephone Line) Connection—EPM Meter with Internal Modem
Option (Comm Option 2) to a PC
Use RJ11 Standard Telephone Line to connect with the EPM 9450/9650 meter. For details
on this connection, see Chapter 10.
5.5 RJ45 Connection—EPM Meter with Internal Network Option (Comm
Option 1) to Multiple PCs - 10/100BaseT
The Internal Network Option conforms to the IEEE 802.3, 10BaseT and 100BaseT
specification using unshielded twisted pair (UTP) wiring. This allows the use of inexpensive
RJ45 connectors and CAT 3 or better cabling. For details on this connection, see Chapter
11.
5.6 Communication Ports on the EPM I/O Modules
• Female RS485 Side Port: use to connect to another module’s female RS485 side
port.
• Male RS485 Side Port: use to connect to the EPM meter’s Port 3 or Port 4, or to
connect to another module’s male RS485 side port.
• I/O Port: use for functions specific to the type of module; size and pin configuration
varies depending on type of module.
• For more detail, refer to the following section and Chapter 9.
Figure 5-8: I/O Module Communication Ports
5.6.1 RS485 Connection—EPM Meter to EPM I/O Modules
• Six feet of RS485 cable harness is supplied with each I/O module mounting kit (p/n
PL9000-MBIO). Insert one end of the cable into Port 3 or Port 4 of the EPM 9450/
9650 meter.
Male RS485
Side Port
Female RS485
Side Port
I/O Port
(Size and Pin
Configuration Vary)
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