CP302
IDE2 Module
ID 21112, Rev. 05
Page C - 15
©
PEP Modular Computers GmbH
The default configuration is RS232
RS422 and RS485 COM2 Termination
When the IDE2 module is using the onboard RS485 interface and is the last on the
RS422 or RS485 bus, then the RS422 or RS485 interface must provide termination
resistance. The purpose of jumpers J10 and J11 are to enable this line termination
resistor (120 R).
Table C-10: Jumper Setting to Configure COM2
Jumper
RS232
(default)
RS422
RS485
Disabled
J14
Open
Closed
Open
Open
J12
Open
Closed
Closed
Open
J13
Open
Closed
Closed
Closed
J16
Open
Open
Closed
Open
J18
Open
Closed
Open
Open
Table C-11: Jumper Settings for RS422 RXD Termination (COM2)
Termination
J10
ON
Closed
OFF
Open
Table C-12: Jumper Settings for RS422 TXD and RS485 Termination (COM2)
Termination
J11
ON
Closed
OFF
Open
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