IBASE IB827 - Manual (Page 15)

INSTALLATIONS
JP2, JP4, JP5: 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)
JP5:
1-2
JP2:
3-5 & 4-6
JP4:
3-5 & 4-6
JP5:
3-4
JP2:
1-3 & 2-4
JP4:
1-3 & 2-4
JP5:
5-6
JP2:
1-3 & 2-4
JP4:
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
1 DCD TX- DATA-
2 RX TX+ DATA+
3 TX RX+ NC
4 DTR RX-
NC
5 Ground Ground Ground
6 DSR NC
NC
7 RTS NC NC
8 CTS NC NC
9 RI NC NC
10 NC NC NC
IB827 User’s Manual 11