Subtraction (Sub) - ABB i-bus KNX ABA/S 1.2.1 Product Manual

®
ABB i-bus KNX
Parameters
7.10.23

Subtraction (SUB)

Description
Subtracts one input value (Subtrahend) from another (Minuend).
Inputs
No.
1
2
Outputs
No.
1
2
Parameters
None
Function
Whenever a telegram is received the output starts a recalculation independently if the value has changed.
An overflow will occur if the
•
If the
o
o
•
If the
o
o
•
If the
o
o
Other
Unlinked inputs are treated as if they did not exist and are set to 0.
DPT Abbr.
8 bit or higher M
Same as Input 1 S
DPT Abbr.
Same as Input 1 D
1 bit Ov
Subtraction
Subtraction value is greater than the maximum DPT value:
D = 0
Ov = 1 (true)
Subtraction value is less than the minimum DPT value:
D = 0
Ov = 1 (true)
Subtraction value is within the valid range of the DPT:
D = Difference between the two input values (Minuend - Subtrahend)
Ov = 0 (false)
Name Visible
Minuend Always
Subtrahend Always
Name Visible
Difference Always
Overflow Always
value is outside the DPT range:
Description
Description
Indicates an overflow
ABA/S 1.2.1 | 2CDC509086D0201 67