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CP6500-V
Configuration
ID 28945, Rev. 01
© 2005 Kontron Modular Computers GmbH
Page 4 - 5
P R E L I M I N A R Y
2894
5.01.UG.VC.050304/09095
4
4.1.7
Serial Ports COM1 and COM2 Jumper and Resistor Settings
4.1.7.1
COM1 Jumper and Resistor Setting
The serial interface COM1 (J9) may be configured for either RS232 or RS422 using solder
jumpers and appropriate resistors. The following figure and tables indicate the physical
locations of these jumpers and resistors, and their required configurations for the various
operational modes.
Figure 4-1: COM1 Configuration Jumpers and Resistors
The default setting is indicated by using italic bold.
RS422 and RS485 COM1 Termination
When COM1 is configured for RS422 operation and is the last device on the RS422 bus, then
the RS422 interface must provide termination resistance. The purpose of jumpers JP5 and JP7
is to enable this line termination resistor (120 ohm).
The default setting is indicated by using italic bold.
Table 4-7: Resistor Setting to Configure COM1
RESISTOR
RS232
RS422
JP8 (soldered or 0 ohm, 0805 package)
Closed
Open
R311 (4700 ohm, 0603 package)
Open
Open
R330 (soldered or 0 ohm, 0603 package)
Open
Open
Table 4-8: Jumper Setting for RS422 RXD Termination (COM1)
TERMINATION
JP5
ON
Closed (soldered or 0 ohm, 0805 package)
OFF
Open
JP6
JP5
JP8
R330
JP4
JP3
R320
JP7
R329
COM1
R311
Содержание CP6500-V
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