Kontron CP6500-V, User Manual

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CP6500-V Configuration
ID 28945, Rev. 01 © 2005 Kontron Modular Computers GmbH Page 4 - 7
P R E L I M I N A R Y
2894
5.01.UG.VC.050304/09095
4
RS422 and RS485 COM2 Termination
When COM1 is configured for RS422 or RS485 operation and is the last device on the RS422
or RS485 bus, then the RS422 or RS485 interface must provide termination resistance. The
purpose of jumpers JP3 and JP4 is to enable this line termination resistor (120 ohm).
The default setting is indicated by using italic bold.
The default setting is indicated by using italic bold.
Table 4-11: Jumper Setting for RS422 RXD Termination (COM2)
TERMINATION JP3
ON Closed (0 ohm resistor)
OFF Open
Table 4-12: Jumper Setting for RS422 TXD and RS485 Termination (COM2)
TERMINATION JP4
ON Closed (0 ohm resistor)
OFF Open