Jp1, jp2, jp3: rs232/422/485 (com2) selection, Jbat1: clear cmos setting, Jp4: atx or at power selection – IBASE IB885 User Manual
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INSTALLATIONS
JP1, JP2, JP3: RS232/422/485 (COM2) Selection
COM1 is fixed for RS-232 use only. COM2 is selectable for RS232,
RS-422 and RS-485.The following describes the settings for COM2.
COM2
Function
RS-232
RS-422
RS-485
Jumper
Setting
(pin closed)
JP3:
1-2
JP2:
3-5 & 4-6
JP1:
3-5 & 4-6
JP3:
3-4
JP2:
1-3 & 2-4
JP1:
1-3 & 2-4
JP3:
5-6
JP2:
1-3 & 2-4
JP1:
1-3 & 2-4
COM2 is jumper selectable for RS-232, RS-422 and RS-485.
Pin #
Signal Name
RS-232
R2-422 RS-485
11 DCD TX- DATA-
13 RX TX+ DATA+
15 TX RX+
NC
17 DTR RX-
NC
19 Ground Ground Ground
12 DSR
NC
NC
14 RTS
NC
NC
16 CTS
NC
NC
18 RI
NC
NC
20 NC
NC
NC
JBAT1: Clear CMOS Setting
JBAT1
Setting
Normal
Clear CMOS
JP4: ATX or AT Power Selection
JP4
ATX Power
ATX
AT
IB885 User’s Manual
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