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COM128
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Contents
Main
Page
Conventions
Table of Contents
FEATURES
COM128
MULTI-PORT RS-232 TO RS-485 CONVERTER
1 INTRODUCTION
2 PHYSICAL FEATURES
2.1 RS-232 PANEL
Figure 2.2.1 RS-485 Connection Panel
2.2 RS-485 PANEL
Figure 2.1.1 RS-232 Connection Panel
3 CONFIGURATION
Figure 3.1.1 COM128 Configuration Switches
3.1 CONFIGURATION SWITCHES
3.2 MODE DESCRIPTIONS
SWITCHES
Page
Page
4 INSTALLATION
4.1 DC SUPPLY CONNECTIONS
Figure 4.2.2 RS-232 Direct Connection to Computer
4.2 RS-232 CONNECTIONS & CONFIGURATION
Figure 4.2.3 RS-232 Connection to Modem
4.3 RS-485 BUS CONNECTIONS
Figure 4.3.2 RS-485 Intermediate Terminal Strip Connection
COM128 Installation and Operation Manual Schneider Electric
10
RS-485 Cable
RS-485 STRAIGHT-LINE TOPOLOGY RS-485 LOOP TOPOLOGY
Figure 4.3.3a RS-485 Straight-Line and Loop Topologies
5 SUPPLYING POWER TO THE RS-232 DTR PIN
COM128 Installation and Operation Manual Schneider Electric
DO NOT
point not
Figure 4.3.3a RS-485 Topologies to Avoid
connection
3-way star
DO NOT
CONNECT
allowed
6 TECHNICAL SPECIFICATIONS
Figure 6.1 COM128 Mechanical Dimensions
-IND OPTION
7 COM128 OPTIONS
-UNI OPTION
COM128
+
1A Slo-Blo
-
+
Figure 7.2 Connecting the -IND Power Supply
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PowerLogic COM 128
Schneider Electric