8
ACR8000 Hardware Manual
P/N PM08119 Version 1.00
Motherboard Jumpers
Serial Port Select (JS1, JS2)
Figure 1.2 Serial port jumpers
COM1 COM2
JS1
JS2
RS232 RS232 1-2 1-2
RS232 RS422 1-2 2-3
RS422 RS232 2-3 1-2
RS422 RS422 2-3 2-3
Table 1.3 Serial port jumpers
In addition to the above jumper settings, the proper hardware option for RS-232 or
RS-422 communications must be purchased and installed.
The serial communication ports have an automatic baud rate detection feature. Hitting
ENTER key a few times from a dumb terminal or sending several CHR$(13) characters
from a serial host will wake up the communications port.
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