63230-314-200/A2
Chapter 4—Installation and Wiring
8/2001
Wiring Connections
25
© 2001 Schneider Electric All Rights Reserved
RS-232 Serial Port
RS-232 is used to configure the EGX200 network parameters, and also can be used
for serial communication using Modbus RTU. The EGX200 RS-232 port uses a
standard DB9 male connector. The following table shows the typical serial RS-232
connector pinout.
COM 1 and COM 2 LEDs
One set of LEDs is provided for each COM port. A yellow LED illuminates when the
corresponding COM port is receiving data (Rx). A green LED illuminates when data on
the corresponding COM port is transmitted (Tx). Also, above the COM 2 Rx and Tx
LEDs, a third LED (green) illuminates steadily when COM 2 is selected to be active for
RS-485 communication. The COM 2 Tx and Rx LEDs behave the same way when
used for either RS-485 or RS-232 communication.
Table 4–3: RS-232 Pin Assignments (DB9 EGX200 Signal Set)
Pin No.
Description
Pin 1
Received Line Signal Detector (Data Carrier Detect)
Pin 2
Received Data
Pin 3
Transmit Data
Pin 4
Data Terminal Ready
Pin 5
Signal Ground
Pin 6
Data Set Ready
Pin 7
Request To Send
Pin 8
Clear To Send
Pin 9
Ring Indicator
Summary of Contents for EGX200
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