Acrosser AR-B1551 - Manual (Page 24)

AR-B1551 User s Guide
23
(1) RS-232/RS-485 Select for COM2 (P1 & P3)
The P1&P3 jumper is used to choose between the use of the on-board RS-232 or RS-485 for the COM2.
P3
P1 1
3
2
RS-232
Factory Preset
1
3
2
RS-485
A C B A C B
Figure 3-10 P1 & P3: RS-232/RS-485 Select for COM2
(2) RS-485 Terminator Select (JP6)
When there is only one line the setting should be left off, but if you are using multiple blocks on a single line
this should be set to “ON” in order to properly terminate the connection for better transmission of data
OFF
Factory Preset
1
2 1
2
ON
Figure 0-7 JP6: RS-485 Terminator Select
3.2.19 Touch Screen Connector (T.S.1 & T.S.2)
1 RXDF
2 TXDF
3 CGND
Figure 0-8 T.S.1&T.S.2: Touch Screen Connector
3.2.20 D.O.C. Memory Address Select (JP4)
This section provides the information about how to use the D.O.C. (DiskOnChip). There divided two parts:
hardware setting and software configuration.
Step 1: Use JP4 to select the correct D.O.C. memory address.
Step 2: Insert programmed DiskOnChip into sockets U22 setting as DOC.
Step 3: Line up and insert the AR-B1551 card into slot of your computer.
OFF
Factory Preset
1
2 1
2
ON
Figure 0-9 JP4: D.O.C. Memory Address Select
JP4 Address Note
OFF C8000 Factory Preset
ON D0000
Table 0-4 D.O.C. Memory Address