Getting Started with the DS1840K . . .
9 of 13
The “2-Wire” page gives you
direct access to 2-Wire
communication (see Figure 14).
Hopefully, you will never have
to use this page. Its main
purpose is for debugging.
This page also allows you to
change the Slave Address. This
is the same as the control found
on the “General Page”. You
may use either one to choose the
address. Once again, make sure
that this value matches the DIP
switch settings. The default
value is 000.
Figure 14. 2-Wire page.
The “DS1847/48” page allows
you to display the current
temperature, as well as the
corresponding resistor values
from the lookup tables. In
addition, a fill tool is provided
to simplify programming of the
lookup tables. If you have no
particular data to fill the tables
with, but would still like to
experiment with the operation,
you may fill resistor 0 and
resistor 1 with ramps. The
resistor 0 ramp button fills the
lookup table with increasing
values starting from 0. Resistor
1 similarly generates a ramp in
the opposite direction, starting
from a large number and
decreases value as address
increases.
Figure 15. DS1847/48 page.
