7.3.2 RS-485
An RS485EXT box is required to convert the RS-232 signals to RS-485. Using a flat-bladed
screwdriver press firmly in the small square slot to open the wire slot. Insert the end of the wire
into the wire slot. Remove the screwdriver to close the wire slot. Repeat with the other wires.
TIP:
Wires with ferrules can be pressed firmly into the wire slot. You do not need to open it first.
Table 7-2: RS485EXT wire color, function, and data logger connection
Wire color (SurfaceVue 10)
RS485EXT connection
Data logger connection
White
RS232 Rx
Black
RS232 Tx
Brown
RS232 12VDC (power)
Blue
RS232 G
Yellow
Not used
Clear
RS485 A(-)
C odd
RS485 B(+)
C even
RS485 12VDC (power 10 to 30 VDC)
12V
RS485 Ground
G
SurfaceVue 10 11
