CP605
Configuration
ID 25095, Rev. 07
© 2004 Kontron Modular Computers GmbH
Page 4 - 7
2509
5.07.UG.VC.041005/14220
9
The default setting is indicated by using italic bold.
4.1.8.2
COM2 Jumper and Resistor Setting
The default setting is indicated by using italic bold.
RS-422 and RS-485 COM2 Termination
When the CP605 is using the onboard RS-485 interface and is the last device on the RS-422
or RS-485 bus, then the RS-422 or RS-485 interface must provide termination resistance. The
purpose of jumpers J3 and J4 is to enable this line termination resistor (120 R).
The default setting is indicated by using italic bold.
The default setting is indicated by using italic bold.
Table 4-10: Jumper Setting for RS-422 RXD Termination (COM1)
TERMINATION
J2
ON
Closed
OFF
Open
Table 4-11: Jumper Setting for RS-422 TXD and RS-485 Termination (COM1)
TERMINATION
J1
ON
Closed
OFF
Open
Table 4-12: Resistor Setting to Configure COM2
Resistor
RS-232
RS-422
RS-485
R128
Open
Closed
Closed
R167
Open
Open
Closed
R168
Closed
Closed
Open
R115
Open
Closed
Open
Table 4-13: Jumper Setting for RS-422 RXD Termination (COM2)
TERMINATION
J4
ON
Closed
OFF
Open
Table 4-14: Jumper Setting for RS-422 TXD and RS-485 Termination (COM2)
TERMINATION
J3
ON
Closed
OFF
Open