Path: Settings > Advanced functions > User-defined functions >
User-def. function 2
4-2-9-2_UDF_SETUP_121
User-def. function 2
Related information
8.2.8.3 Logical operator
8.2.8.2 Setting up source
8.4.4 Digital outputs
8.4.4 Digital outputs
11. Logical operators
8.2.8.2
Setting up source
In this display, the sources are set up by selecting the input signal.
Both "1st source" and "2nd source" have to be set up before the
function can be used in the system. The input signal can be
inverted and must be combined with a response time. "Response
time" is a delay which ensures that the input signal has status high
(1) for a certain time in seconds set by the user.
Example
This display is used to set up the 1st source of "User-def. function
2".
The 1st source is set to "Internal CU 362 states". The internal
state is set to "All pumps running".
Path:
Settings > Advanced functions > User-defined functions >
User-def. function 2 > Setting up source 1
4-2-9-2-1_UDF_SOURCE_1_124
Setting up source 1
Related information
8.2.8.1 User-defined function
8.2.8.3 Logical operator
This display is used to select the logical operator for the user-
defined functions.
"1st source" and "2nd source" (virtual digital input signals) are
always linked to a logical operator.
"Timer function" and "Constant value" should not be used
as input signals to a logical operator.
Select the logical operator according to the desired function.
Logical operators:
• AND
• OR
• XOR
• Set/reset flip-flop (SR-FF)
• Reset/set flip-flop (RS-FF)
• Toggle flip-flop (T-FF).
See section about logical operators.
Example
The selected logical operator is an "AND" function. The "AND"
function is used when both sources have to be high before the
output signal changes status to high.
Path:
Settings > Advanced functions > User-defined functions >
User-def. function 2 > Logical operator
4-2-9-2-3_UDF_LOGIC_OPERATOR_123
Logical operator
Example 1
The user-defined function can be used to control an external pump located in an overflow pit.
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