COM128 Installation and Operation Manual
Schneider Electric
12
SHLD
SHLD
PORT C
PORT D
PORT B
PORT A
DCE
PORT
DTE
PORT
COM128
RS-232 to RS-485 Converter
RS-232
RS-485
Computer
or Modem
SHLD
PORT C
PORT D
PORT B
PORT A
DCE
PORT
DTE
PORT
COM128
RS-232 to RS-485 Converter
RS-232
RS-485
Computer
or Modem
RS-485 ST
AR CONNECTION
RS-485 PORT
RS-485 PORT
SHLD
SHLD
RS-485 PORT
SHLD
RS-485 PORT
DO NO
T
CONNECT
SHLD
SHLD
RS-485 PORT
RS-485 PORT
SHLD
SHLD
RS-485 PORT
RS-485 PORT
SHLD
SHLD
RS-485 PORT
RS-485 PORT
DO NO
T
CONNECT
RS-485 T
-CONNECTION
3-way star
connection
point not
allowed
Figure 4.3.3a
RS-485 Topologies to Avoid
Summary of Contents for COM128
Page 1: ...PowerLogic COM128 RS 232 to RS 485 Converter Installation and Operation Guide August 2006...
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