Daktronics Fuelight FL-2109 Series Petroleum Price Displays - Manual (Page 16)

10 Signal Installation
Driver Rotary Switch Line and Face Settings
The first driver at each display installation is designated as a host driver –
the driver with the antenna/signal connection. The host driver sends the
line information out to the client drivers.
Every driver must have a unique line and face setting (or “address”) that
identifies the face and line of the display.
The line and face numbers are set by turning the rotary switches located
on the driver at S1 and S2, refer to Figure 8 for locations. Set the line
number using S1 and the face number using S2.
All displays with the same line number will show the same price. For
example, two displays, one with a driver set to Line 1, Face 1 and one with
a driver set to Line 1 Face 2, will display the same price. Refer to Figure 8
for an example.
Figure 8: Rotary
Switches