6
Operation
Intelligent Power Supply KNX PS640-IP 2U
• Version: 21.09.2021 • Technical changes and errors excepted.
4.2.3. Event Counter Reset
Counters for total operating time and device startups cannot be reset. Other counters
for events can be reset by communication object. These counters (number and dura-
tion) are set to zero by writing a "1" to the communication object no. 33 "Counter reset".
The event counter of each individual alarm (1,2,3,4) is set to zero by writing a "0" to the
related communication object "Duration X" (objects no. 21, 24, 27, 30). Both number
and duration counters then will be reset.
4.3. Parameter Structure for Measurement Sourc-
es
On enabling a measurement source in the ETS tab "Measurements", the following pa-
rameter structure is available (exception: counters). An actual value can be sent over
the bus after a certain value change ("Sending difference") or after a pre-set time period
has elapsed ("Cyclic sending"). A value reaching the excess threshold range can be
used to send telegrams containing "1" or "0" ("Behaviour on alarm activation"). Leaving
this excess threshold range activates the "Behaviour on alarm deactivation". The addi-
tional alarms have an extended adjustment.
Table 1: Available Event Counters
Event
Number Counter
Duration Counter
Overload
X
X
Short Circuit
X
Load Detached
X
KNX Bus Reset
X
Threshold Range
X
X
Operating Time
(total/since last startup)
X
Device Startup
X
