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Wiki source code of 3. Metering Channels

Version 46.1 by Lana on 2025/11/30 19:45
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Lana 22.2 1 == CONTENT ==
Lana 3.2 2
Lana 3.3 3
4 == 1. INTRODUCTION ==
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6 CENTO is a multifunctional software platform for data collection, processing, and display. This Guide contains a description of setting up metering of electricity, energy resources, as well as other types of metering.
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8 It is assumed that the user, having read the instructions "User manual" and "Setup manual", is already familiar with the main elements of the interface and how to configure CENTO.
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Lana 3.4 10 == 2. ELECTRICITY METERING ==
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12 === 2.1. Device setup ===
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14 CENTO software can work with a variety of metering devices that have the ability to measure and store power and power profiles. The metering function is enabled by adding the metering protocol corresponding to the device on the **Device editing** page (Settings > Devices, tags, channels > Devices), then, similar to other polling protocols, the parameters of communication with the device (RTU address, TCP/UDP port, timeout and number of connection attempts) and scheduled polling parameters (cron of CENTO rules) are specified, to configure electricity metering, the file number is specified in the "File#" field,  which stores power and power profiles.
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Lana 21.2 16 We will consider the survey of historical data of interval values of accumulated electricity using the example of SATEC devices. For this purpose, the// SATEC (Modbus TCP)// protocol is used (see Fig 2.1).
Lana 4.2 17
Lana 23.2 18 [[image:Screenshot 2025-11-27 at 18.53.58.png||height="914" width="932"]]
Lana 4.2 19
20 Figure 2.1. Settings of the E/E metering protocol
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22 Setting up the E/E metering protocol contains the following fields:
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Lana 22.3 24 [[image:Screenshot 2025-11-27 at 18.56.14.png||height="63" width="404"]]
Lana 7.2 25
26 Selection of the accounting protocol from the drop-down list and its inclusion in the survey.
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Lana 22.2 28 [[image:Screenshot 2025-11-27 at 18.56.53.png||height="112" width="404"]]
Lana 7.2 29
30 Setting up a poll according to the Cron rule (there can be several) with set attempts and timeouts.
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Lana 22.2 32 [[image:Screenshot 2025-11-27 at 18.57.26.png||height="146" width="408"]]
Lana 9.2 33
34 Specifying the network address of the device and the port for the TCP connection.
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Lana 22.2 36 [[image:Screenshot 2025-11-27 at 18.57.54.png||height="96" width="93"]]
Lana 9.2 37
38 Serial number of the E/E metering data file in the device's memory (for devices of the Satec type).
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Lana 23.2 40 [[image:Screenshot 2025-11-27 at 18.58.26.png||height="80" width="144"]]
Lana 9.2 41
Lana 11.2 42 Device administrator password.
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Lana 22.3 44 [[image:Screenshot 2025-11-27 at 18.58.55.png||height="114" width="406"]]
Lana 11.2 45
46 Coefficients of conversion of interval values of readings/power (depends on the type of metering device, as well as on the type of connection (direct or with measuring transformers).
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Lana 22.3 48 [[image:Screenshot 2025-11-27 at 18.59.34.png||height="106" width="410"]]
Lana 11.2 49
Lana 13.2 50 Transformation coefficients of current and voltage transformers, meter coefficient.
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Lana 22.3 52 [[image:Screenshot 2025-11-27 at 19.00.09.png||height="88" width="217"]]
Lana 13.2 53
54 Specifying the TCP connection number for parallel polling of one device (for example, if the device is connected via a Modbus TCP/Modbus RTU converter, then the number of the trunk to which the device is connected is specified).
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Lana 22.4 56 [[image:Screenshot 2025-11-27 at 19.00.46.png||height="77" width="216"]]
Lana 13.2 57
Lana 15.2 58 Selection of energy/power profile.
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Lana 22.4 60 [[image:Screenshot 2025-11-27 at 19.01.19.png||height="152" width="406"]]
Lana 15.2 61
62 Enabling/disabling the time synchronization of the device on the CENTO side, with the configured period of maximum time correction in seconds, as well as the permissible deviation.
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Lana 22.4 64 [[image:Screenshot 2025-11-27 at 19.01.49.png||height="240" width="133"]]
Lana 15.2 65
Lana 17.2 66 Enabling/disabling a particular channel.
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Lana 23.2 68 [[image:Screenshot 2025-11-27 at 19.02.20.png||height="68" width="285"]]
Lana 17.2 69
70 Serial number of the record (metering channel) in the E/E metering data file in the device's memory (for devices of the Satec type).
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Lana 23.2 72 [[image:Screenshot 2025-11-27 at 19.02.51.png||height="100" width="291"]]
Lana 17.2 73
74 When this option is enabled, the specified numbers of energy and power files are not taken into account.
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Lana 23.2 76 [[image:Screenshot 2025-11-27 at 19.03.24.png||height="101" width="98"]]
Lana 19.2 77
78 Enabling/disabling reading logs from the device.
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Lana 23.2 80 [[image:Screenshot 2025-11-27 at 19.03.56.png||height="205" width="98"]]
Lana 19.2 81
82 Rounding of channels.
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84 Viewing and changing the metering parameters in the memory of the metering device is carried out in accordance with the instructions of the operating manual for this device.
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Lana 21.2 86 === 2.2. Setting up metering channels ===
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88 Electricity meters often do not need to manually add channels to the list of tags, so all the settings are in the metering protocol.  The display of the used accounting channels from the protocol automatically appears on the **Tags, channels** tab, but with a ban on editing actions.
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90 [[image:Screenshot 2025-11-27 at 19.06.17.png]]
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92 Figure 2.2. Display of metering channels
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94 Clicking on the channel name or its ID, redirects to the **Device editing: editing** page, as shown in Fig. 2.1.
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Lana 21.3 96 The forms for filling in the fields for setting up electricity metering protocols are different and depend on the type/model of the device, instructions for working with the protocols can be described in different manuals and, if necessary, provided to the User.
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Lana 22.1 98 == 3. ENERGY METERING (COMING) ==
Lana 21.3 99
Lana 22.1 100 === 3.1. Device Setup (Coming) ===
Lana 21.3 101
Lana 22.1 102 == 4. OTHER TYPES OF METERING ==
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Lana 23.2 104
105 In addition to metering electricity and energy resources, the CENTO software supports tracking of operating time, emissions and discharges, as well as product accounting.
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107 Metering can be implemented not only on the basis of specialized metering devices, but also performed in the CENTO software itself on the basis of tags (real-time data). For example, using information about the state of the equipment (0 - disabled and 1- enabled), the user can set up a metering channel that will calculate the operating time of the equipment. And using the processing functions (see Section 5 of this manual), you can form metering channels (increments) from the current capacity, instantaneous flow or an ever-growing meter.
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Lana 24.2 109 == 5. CALCULATED CHANNELS ==
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111 If the device installed at any connection does not have the function of storing interval values of electricity/power in the memory, as well as archived values for other types of metering, CENTO has the function of generating interval values from tags (real-time data). In order to create a metering channel, go to Settings > Devices, tags, channels > Calculation channels (see Fig. 5.1).
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113 [[image:Screenshot 2025-11-30 at 16.26.53.png]]
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115 Figure 5.1. List of calculated channels
Lana 25.2 116
Lana 32.2 117 === 5.1. Channel from tag ===
Lana 25.2 118
Lana 27.2 119 To create a new metering channel from real-time data (tags), click the button [[image:Screenshot 2025-11-30 at 16.28.39.png||height="18" width="92"]]
Lana 25.2 120
Lana 27.2 121 Then the **Channel from tag:**
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123 **editing** page opens. When adjusting an already created metering channel, the page **Channel from tag: editing** will open (see Fig.  5.2).
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125 [[image:Screenshot 2025-11-30 at 16.29.45.png]]
Lana 29.2 126
127 Figure 5.2. Channel from tag: editing
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129 On the page that opens, specify the name of the channel, its ID (it is written automatically when created, and it does not change for the existing one) and the Code (an optional field), the category of the parameter – electricity/energy resources/technology/emissions/diagnostics/time and the corresponding categories of units of measurement, whether the metering channel has metrological significance, and also fill in the fields:
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131 [[image:Screenshot 2025-11-30 at 16.30.29.png]]
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Lana 31.2 133 ID of the tag on the basis of which the calculation channel will be created.
Lana 29.2 134
135 [[image:Screenshot 2025-11-30 at 16.30.53.png]]
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Lana 31.2 137 Selection of the device in the object tree from which the specified tag ID is taken.
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139 [[image:Screenshot 2025-11-30 at 16.31.25.png]]
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141 Function for processing parameter values.
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143 [[image:Screenshot 2025-11-30 at 16.31.55.png]]
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Lana 32.2 145 Value aggregation interval.
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147 [[image:Screenshot 2025-11-30 at 16.32.28.png]]
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149 Processing the calculated channel with formula input.
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Lana 35.2 151 === 5.2. Calculated channel ===
Lana 32.2 152
Lana 35.2 153 To create a channel that processes the values of several connections, or interval values, for example, summing up electricity consumption by a group of consumers (total energy consumption) or calculating the balance of consumed energy, click the button on the **Calculated channels** tab (see Fig. 4.1), then click [[image:Screenshot 2025-11-30 at 16.33.58.png||height="22" width="116"]]
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155 When adjusting an already created metering channel, the **Settlement channel: editing** page opens (see Fig. 5.3).
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157 [[image:Screenshot 2025-11-30 at 16.34.28.png]]
Lana 37.2 158
159 Figure 5.3. Metering channel: editing page
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161 On the page that opens, specify the name of the channel, its ID (it is specified automatically when created, but it does not change for the existing one) and the Code (an optional field), the category of the parameter – electricity/energy resources/technology/emissions/diagnostics/time and the corresponding categories of units of measurement, the object and device to which the parameter will be linked.
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163 In the **Template** field, specify the formula for processing the values of all parameters used in the calculation. The formula can use arithmetic operations, conditions, mathematical functions that are specified in [[image:Screenshot 2025-11-30 at 16.35.23.png||height="30" width="135"]] and the following variables for power channels:
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165 * ea_imp - energy A+
166 * ea_exp - energy A-
167 * er_imp - energy R+
168 * er_exp - energy R-
169 * pa_imp - power A+
170 * pa_exp - power A-
171 * pr_imp - R+ power
172 * pr_exp is the power of R-
173 * ra_imp - A+ readings
174 * ra_exp - A- readings
175 * rr_imp - R+ readings
176 * rr_exp - R- readings
177
Lana 41.2 178 === 5.3.  Calculated channels via Information Model ===
Lana 39.2 179
180 For calculation channels of the same type, it is possible to define custom formulas that operate based on Information Model objects and their attributes. In addition to tags and channels, the Information Model can also supply supplementary data (e.g., reference information). To create a template, click the create template button [[image:Screenshot 2025-11-30 at 16.36.34.png||height="27" width="26"]] as shown in Fig. 5.4.
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Lana 41.2 182 [[image:Screenshot 2025-11-30 at 16.37.01.png]]
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184 Fig. 5.4 – Creating a Formula Template
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186 [[image:Screenshot 2025-11-30 at 16.37.47.png]]
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188 Figure 5.5. Creating custom formula
Lana 43.2 189
190 As shown in Fig. 5.5, the custom formula creation window requires input of the formula name, an optional identifier code, and the formula expression. An example demonstrating the calculation of losses in cable lines is provided in Fig. 5.6.
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192 [[image:Screenshot 2025-11-30 at 16.38.43.png]]
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194 Figure 5.6. Calculation formula
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196 [[image:Screenshot 2025-11-30 at 16.39.09.png]]
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198 Figure 5.7. Using calculation formula
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Lana 43.3 200 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:
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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.
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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 ===
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214 The** Downloading/Uploading configuration files** page (Settings > Configuration files) provides functionality for importing and exporting calculation metering channels using Excel files.
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Lana 44.2 216 [[image:Screenshot 2025-11-30 at 16.40.46.png]]
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218 Figure 5.8. Excel file
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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.
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222 Table 5.1. Functions used in formulas.
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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
Lana 44.3 229
Lana 45.2 230 == 6. RECEIPT OF ACCOUNTING DATA ==
Lana 44.3 231
Lana 45.2 232 The** Analysis of the receipt of data** page is the same for all types of metering. It is described in details in the "User manual"
Lana 44.3 233
Lana 45.2 234 === 6.1. Manual polling ===
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236 If it is necessary to re-acquire data from metering devices, a manual poll should be performed. To do this, navigate to the **Receipt of metering data** page (Analysis > Receipt of metering data). This action opens the **Analysis of the receipt of data** interface (see Fig. 6.1)
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238 [[image:Screenshot 2025-11-30 at 16.44.01.png]]
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240 Figure 6.1. Analysis of the receipt of data
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242 In the device tree, select the required metering point, find the missing data profiles and click on the button
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Lana 44.3 244