Acrosser AR-B1520 - Manual (Page 12)

AR-B1520 User’s Guide
12
3.13 COM2 RS-232/RS-485 SELECT (P2,P3)
3.14 RS-485 TERMINATOR SELECT (JP2)
When there is only one line the setting should be left off, if multiple blocks are used on a single line. This should be
set to “ON” in order to properly terminate the connection for better transmission of data
Open
Factory Preset
1
2 1
2
Closed
3.15 RS-485 HEADER (JP3)
1 2 3
1 N485+
2 N485-
3 GND
3.16 SDRAM SOCKET 144 PIN (SODIMM)
3.17 COMPACT FLASH CONNECTOR (CF)
3.18 PC104 PLUS CONNECTOR (PCI)
The PCI connector is optional. It doesn’t mount in AR-B1520A
3.19 COMPACT FLASH CONNECTOR SELECT (JP4)
1 2
JP4 (ON)
JUMPER FUNCTION
P3
5 3 1 P2
RS-485
P3
5 3 1 P2
RS-232
FACTORY PRESET
PIN FUNCTION
1-2 ON MASTER
1-2 OFF
SLAVE
(Factory Preset)