BMTW-SVN01F-EN 219
Appendix A
Setting DIP Switch
Addresses
A dual inline package (DIP) switch is a set of individual switches pack-
aged in a single assembly. The most common type has eight individual
switches. Each switch can be toggled to be open or closed. For a BCU to
communicate with a device, the DIP switch package of each UCM must be
set to a unique address. The address is derived from the positions of the
switches in the package.
A switch is either open or closed. Each switch position relates to a specific
numeric value or to a value of zero depending upon whether it is open or
closed. Most switch packages indicate open using the designation off or
open and indicate closed using the designation on or closed.
Calculate the address by adding the numeric values for each switch posi-
tion. When the switch is in its active position, use the numeric value; if
the switch is not in its active position, use the value zero. In some cases,
however, you must add the calculated number to a base number other
than zero to determine the actual address. Use Table A1 to locate these
numeric values and base numbers.
Unfortunately, there is no common method used to set these switches. In
some cases the position labeled 1 is the first position. In other cases the
position labeled 8 or 5 is the first position. In some cases the active state
of the switch is off, while in other cases the active state is on. It all
depends on the particular type of UCM that is being addressed. See
Figure 95.
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