Serial Port Selection (RS232C/422/485)
RS-232C/422/485 Mode select (J5)
Type : J5: onboard 6-pin(2*3) header
RS-422/485 Mode on COM2
The onboard COM2 port can be configured to operate in RS-422 or RS-485
modes. RS-422 modes differ in the way RX/TX is being handled. Jumper J5
switches between RS-232C or RS-422/485 mode. All of the RS-232C/422/485
modes are available on COM2.
COM2
Pin Defined: RS-232C RS-422
RS-485
Pin1 : DCD
Tx+
RTx+
Pin2 : RXD
Tx-
RTx-
Pin8 : CTS
Rx+
x
Pin9 : RI
Rx-
x
J5 Selection
1-2 3-4 5-6
RS-232C
ON
OFF
OFF
RS-422
OFF
ON
OFF
RS-485
OFF
OFF
ON
default setting RS-232C
ON
1 2 3 4
Geode
GX1- 300B-55
2 4 6
*
DiskOnChip 2000
1 3 5
3304280 User's Manual
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