Technical
Manual
Temperature
Controller
SCN
‐
RT1
MDT technologies GmbH •
51766 Engelskirchen • Papiermühle 1
Tel.: +49-2263-880 • Fax: +49-2263-4588 • [email protected] • www.mdt.de
22
The
DPT
RHCC
Status
object
is
an
additional
2
Byte
status
object
with
additional
status
messages.
If
more
than
one
testify
is
valid,
also
here
the
values
will
be
added
in
the
same
way
as
at
the
HVAC
object.
The
following
chart
shows
the
hex
values
for
the
single
messages:
Bit
DPT
RHCC
Status
Hex
‐
Value
0
Error
Sensor
1=Error
0x01
7
Heating/Cooling
0=Cooling/1=Heating
0x80
13
Frost
alarm
1=Frost
alarm
0x2000
14
Heat
alarm
1=Heat
alarm
0x4000
Chart
22:
Hex
‐
Values
DPT
RHCC
Status
The
Controller
reacts
always
to
the
value,
which
was
sent
last.
If
you
switched
the
operating
mode
last
via
1
Bit,
the
controller
will
react
to
the
changeover
by
1
Bit.
If
you
switched
the
operating
mode
last
via
1
Byte,
the
controller
will
react
to
the
changeover
by
1
Byte.
The
communication
objects
for
the
mode
selection
are
shown
at
the
following
chart.
The
first
3
communication
objects
are
for
the
1
Bit
changeover,
the
last
3
objects
are
for
the
changeover
via
1
Byte:
Number
Name
Length
Usage
10
Mode
Comfort
1
Bit
Activation
of
the
mode
comfort
11
Mode
Night
1
Bit
Activation
of
the
mode
night
12
Mode
Frost/Heat
protection
1
Bit
Activation
of
the
mode
Frost/
Heat
protection
22
DPT_HVAC
Status
1
Byte
Visualization
of
the
chosen
operating
mode
25
DPT_RHCC
Status
2
Byte
Visualization
measuring/
status
of
the
controller
26
mode
selection
1
Byte
Selection
of
the
operating
mode
Chart
23:
Communication
objects
for
the
operating
mode
changeover
