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Changes for page 3. Metering Channels

Last modified by Iaroslav Platonov on 2026/06/08 09:57
From version 43.2
edited by Lana
on 2025/11/30 19:39
Change comment: There is no comment for this version
To version 44.2
edited by Lana
on 2025/11/30 19:42
Change comment: There is no comment for this version

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197 197  
198 198  Figure 5.7. Using calculation formula
199 199  
200 -
200 +Fig. 5.7 shows the application of the calculation formula:
201 +3*IM{Object identifier IM}.r_ohm_per_km*pow(agg("mean","{line current}","{Interval}"),2)*0.001, where:
202 +
203 +* **IM{Identifier of the IM object}. r_ohm_per_km **– reference to the value of the attribute with the code **" r_ohm_per_km " "** of the information model object
204 +* **Pow **– exponentiation
205 +* **Agg **is an aggregation function
206 +* **Mean **– average value for the time interval
207 +* **{line current} **– a link to the tag ID
208 +* **{Interval} **– data interval.
209 +
210 + The braces **{ }** contain the arguments that need to be entered in the data entry fields as in Fig. 5.7.
211 +
212 +=== 5.4. Downloading/Uploading calculated channels ===
213 +
214 +The** Downloading/Uploading configuration files** page (Settings > Configuration files) provides functionality for importing and exporting calculation metering channels using Excel files.
215 +
216 +[[image:Screenshot 2025-11-30 at 16.40.46.png]]
217 +
218 +Figure 5.8. Excel file
219 +
220 +Fig. 5.8 shows an example of an Excel file with calculated metering channels, which allows adding new channels, as well as adjusting existing ones. All the necessary functions for entering formulas are available in formula reference interface, as well as in Table 5.1.
221 +
222 +Table 5.1. Functions used in formulas.
223 +
224 +|Function|Description|Example
225 +|diff|Calculating increments from accrual (readings) by channel|diff([dev-2-214]) - calculation of increments from the cumulative total (readings) on channel 214 of device 2
226 +|mean|Average Time Interval|mean by the ID10001 tag for a 1-hour time interval
227 +|integral|Integral of Values|Integral by tag ID40011100 in a 1-hour time interval
228 +|first|Indication at the beginning of the interval|first([ti50206_type5], 3600, 0, 0) – calculation of readings based on the ID50206 tag at the beginning of the interval, calculated every hour
Screenshot 2025-11-30 at 16.40.46.png
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