ALPHA® Solar™ Sign
14 Basic sign operation: Connecting a sign to a personal computer
Item Part # Description
A — One end of the RS485 cable connects here.
B 1088-8000 RS485 cable connects sign to the RS485 connector block on the Converter Box III.
C 1088-1111 Converter Box III.
D 1088-8634 10 foot, 9 pin-to-9 pin, type “A9” RS232 cable.
E — Serial port DB25-to-DB9 adapter (may be required by your computer).
9 VOLTS AC
~NOMINAL
RS-232
SHIELD
RS-485(+)
BLACK
RS-485( )
RED
NOT A
TELEPHONE
CONNECTION
RS-485
UNTERMINATED
TERMINATED
Front
view
Top view
PC running
AlphaNet plus™ for
Windows® software.
To one of
the PC’s
COM
(RS232)
ports.
A
B
C
D
E
Set switch to Unterminated.
Data communication through an RS485 converter box interface
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