PowerLogic PM820 - RS485, 4-Wire; RS485, 2-Wire

© 2006 Schneider Electric All Rights Reserved
PowerLogic
®
Series 800 Power Meter 63230-500-224A1
Chapter 5—Communications 6/2006
EN–44
ENGLISH
RS485, 4-wire
RS485, 2-wire
• Use Belden 8723,
9842, or equivalent
— RX+ Green, RX-
White
— TX+ Red, TX-
Black
— Shield Silver (use
crimp connector).
• For Belden 9842
— RX+ Blue/White
stripe
— RX- White/Blue
stripe TX+
Orange/White
stripe
— TX- White/Orange
stripe
• Connect shield to earth
ground at the master
port only.
• If the display is the last
device, terminate it
with 3090MCTAS485
terminator (not
included).
TX–
RX–
TX+
TX / RX
RX+
TX–
RX–
TX+
RX+
TX–
RX–
TX+
RX+
3090
MCTAS485
24 23 22 21 20
Terminal
block
Crimp
connector
Master port
PM8RDA
• Use Belden 9841 or
equivalent.
— TX+ Blue
— TX- White
• Jumper RX+ to TX+
and RX- to TX-
• See “Communications”
on page EN–35 for
more information about
RS485, 2-wire
connections.
TX–
RX–
TX+
TX / RX
RX+
TX–
RX–
TX+
RX+
TX–
RX–
TX+
RX+
24 23 22 21 20
To next
device or
terminate
Crimp
connector
Master port
PM8RDA