E-Mon E-PS-S-HV-RTU - Manual (Page 24)

Chapter 2 Installation 18
Com munications opti ons
The PowerSmart Socket PQM has several communication alternatives depending on your
ordering preferences. All communications ports, of different type, can be used
simultaneously
.
The basic PowerSmart Socket PQM is equipped with one standard optical communication
port (COM1), an optically isolated RS-485 communication port (COM3) and an USB Device
Type A.
Other COM ports are available as optional module.
O n Bo a rd Co mm u n i c ati on p or t
I n f r a r e d C o m m u n i c a t i o n p o r t ( C O M 1 )
Mount an optical probe cable (not included), at the instrument front panel, to communicate
between the meter optical port and a PC serial port
F i g u r e 2 1 : I n f r a r e d C o m m u n i c a t i o n p o r t – C O M 1
R S - 4 8 5 C o m m u n i c a t i o n p o r t ( C O M 3 – o n b o a r d )
The RS-485 Communication port – COM3 is provided by the LOGIC/DISPLAY board.
The RS-485 connection is provided by the LOGIC/DISPLAY cable with three wires as shown
in figure 22
F i g u r e 2 2 : S e r i a l C o m m u n i c a t i o n N e t w o r k C o n n e c t i o n – R S - 4 8 5 C O M 3