IBASE IB946 - Manual (Page 15)

INSTALLATIONS
IB946 User’s Manual 11
JBAT1: Clear CMOS Setting
JBAT1 Setting
Normal
Clear CMOS
JP1, JP2, JP4: RS232/422/485 (COM2) Selection
COM1/COM3/COM4 are fixed for RS-232 use only.
COM2 is selectable for RS232, RS-422 and RS-485.
The following table describes the jumper settings for COM2 selection.
COM2
Function
RS-232 RS-422 RS-485
Jumper
Setting
(Pin closed)
JP4:
1-2
JP1:
3-5 & 4-6
JP2:
3-5 & 4-6
JP4:
3-4
JP1:
1-3 & 2-4
JP2:
1-3 & 2-4
JP4:
5-6
JP1:
1-3 & 2-4
JP2:
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 RTS-
NC
14 RTS RTS+ NC
16 CTS CTS+ NC
18 RI CTS- NC
20 NC NC NC