Menu Functions
30
Input variables
Input variables serve as link to sensors and also to output variables from other function modules or
definable parameters. The collector and the cylinder sensor are the typical input variable of the mod-
ule
SOLAR CONTROL
. Another typical input variable for the module
HEATING DEM.
is the calculat-
ed set temperature of the flow (T.flow SET) of the module
HTG CIRC.CTRL
.
Sometimes also simple parameters can be defined as input variable, when it is reasonable to apply
the computation results of a function module (= its output variable) as thermostat threshold in the new
block. Like the threshold min of the module
CHARGING PUMP
which is not a function parameter but
an input variable.
Each function module has the input variable “Enable …” which represents a general permission of the
entire function. This enables a simple interlock and/or enable of the entire module by another one.
Indication example:
DES.: HTG CIRC.2
FUNCTION STATUS:
INPUT VARIABLE:
◄
OUTPUT VARIABLE:
OPERAT.: TIME/AUTO
other text lines by scrolling
Induce the pointer to “INPUT VARIABLE” and press the wheel (in the following designated as “En-
ter”). Hereby the
indication example
is as follows:
HTG CIRC.2
ENABLE HEATING CIRC.:
Source: User
Status: ON
The line “ENABLE HEATING CIRC.:” represents the general permission of the entire function module.
The user has effected the enable (ON) as “(signal) source”.
Instead of
User
another source of enable can be selected, such as:
Input
The must be an input that is set to
DIGITAL
during input parameterization.
Output
In some cases the outputs of the control unit are controlled by multiple modules
(such as a common solar pump). Via
Output
it is also possible to use a common
output as enable control.
NW status
The enable is effected according to the
status of the network
(See chapter Net-
work/Timeouts). The network status can optionally be selected for individual inputs
or for all network inputs together ("network status 33").
Sensor st
The enable is effected according to the
status of the sensors
. A correctly working
sensor has status
OFF
and a defective (circuit interruption or short circuit)
ON
.
Thus, for example, failure of the external sensor can be correspondingly reacted to
(e.g. for the function "
messages
").
The sensor status can optionally be selected
for individual sensors or for all sensors together ("sensor status 17").
Message
The enable of the function module depends on the status of a
message
.
Network
A function module of another device from the CAN network is responsible for the
enable of the function
HTG CIRC.2
. (
digital
network input variable).
Any other previously defined function can release the function HTG CIRC.2.
