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CP321
B.
CP320-TR1 (Optional)
B.1
Board Description
On the CP321 it is possible to utilize a transition module which provides optoisolated RS485
functionality either half or full duplex where half duplex is the default.
Users who require a CP321 with an opto-isolated serial interface are supplied with a custom-
ized CP321 on which the standard RJ45 connector is omitted (SER) and also with this module
which comes with a substitute RJ45 connector routed through optoisolation circuitry on the
module.
The module has been designed so that it does not increase the board width, which remains
unchanged at 4HP with the module in place.
Table B-1: Duplex Configuration
DUPLEX
R13
FUNCTION
SETTING
Full
Open
Half
Set
Table B-2: Serial Port Pinout
RS485
SIGNAL
PIN
HALF-DUPLEX
1
N/C
2
N/C
3
GND
4
+TRXD
5
N/C
6
N/C
7
-TRXD
8
N/C
ID 24977, Rev. 02
FULL-DUPLEX
-RxD
N/C
GND
-TxD
N/C
+RxD
+TxD
N/C
© 2003 Kontron Modular Computers GmbH
CP320-TR1 (Optional)
Figure B-1: View of Underside of the
CP320-TR1 Module
CON6
RJ45
(Serial)
Refer to the Functional
Description chapter for
the pinout of CON3.
CON3
R13
J1
J2
Page B - 3
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