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16
Transmission protocol
Power Supply Systems KNX PS640+ and KNX PS640+USB
Version: 19.08.2020 • Technical changes and errors excepted.
5.1.3. Current threshold value
If the threshold value is used:
Threshold value:
If the threshold value is set by parameter:
If the threshold value is set by communication object:
If the error log is used:
Object „message part 1“ sends signal:
Error no. (1 = latest error)
Object „message part 2“ sends signal:
Error type
Object „message part 3“ sends signal:
Date of error start
Object „message part 4“ sends signal:
Time of error start
Use threshold value
No • Yes
Threshold value is set by
Parameter
Threshold value in mA
0 … 640
Hysteresis of the threshold value in %
0 … 50
Threshold value is set by
Communication object
The value communicated last shall be main
-
tained
• not
• after restoration of voltage
• after restoration of voltage and
programming (Do not use for first
commissioning)
Start threshold value in mA
valid until 1. communication
(only if the value communicated last is „not“
maintained or „after restoration of voltage“)
0 … 640
Type of threshold change
• Absolute value with a 16 bit
com.object
• Increment/decrement with one comm.
object
• Increment/decrement with two comm.
objects
Step size in mA
(only with „increment/decrement“)
1 • 2 • 5 • 10 • 20 • 50 • 100
Hysteresis of the threshold value in %
0 … 50