Siemens SENTRON PAC2200CLP, Product Manual, Page: 32 / 130

Description
2.4 Averaging measured values
PAC2200CLP
30
Equipment Manual, 06/2021, L1V30820585B-02
2.4 Averaging measured values
2.4.1 Averaging measured values
Instantaneous values are averaged over defined time periods in order to generate measured
value profiles. The average values can be read out and stored for this purpose. This reduces
the communication load and the storage requirements on downstream servers.
The PAC2200CLP device features two average value generators, which can be parameterized
independently.
The aggregation of the measured values reduces the bus load without the risk of losing
information. Average values are calculated contiguously, based on the underlying values.
After expiry of the set time period, the values are updated each time.
•
The average values of stage 1 are set to an averaging time of 10 seconds as standard.
• The average values of stage 2 are set to an averaging time of 15 minutes as standard.
The averaging time can be set between three seconds and one year.
These values can only be read out if the communications interfaces are used via Modbus TCP.
The list of available measured values can be found in chapter Modbus measured variables
with function code "0x14" (Page 99).
2.4.2 Load profile – energy consumption profile
The PAC2200CLP displays the energy consumption in 15-minute periods, as stipulated in PTB-
A50.7. The circular buffer contains enough space for over two years of 15-minute periods.
Daily, monthly and annual consumption values are also stored for over 10 years. (See: web
browser, powerconfig, Modbus FC0x64)
Each individual period entry contains the following information:
•
Time stamp at the end of the completed demand period (UTC) according to PTB-A50.7
• Unique ID
• Real length of period (measurement duration)
• Total active energy for import and export according to PTB-A50.7
• Counter readings of active energy for import and export, separated according to tariff T1
and T2
• Time zone offset to UTC
• Status information about the values from this demand period
In addition to the option of reading out all profiles, the last completed period can also be read
out. It is only available during the period that is currently running. (See Modbus map, register
545ff)