User Manual - Emco Electronics
Contents
1. Read LED Conditions Reply for reading UV OV and CF conditions Field Name Example Hex Slave Address 32 Function 01 Byte Count 01 Data 1 Byte XX Example 3 Reset Min Request and Reply for resetting Minimum recorded value Field Name Example Hex Slave Address 32 Function 05 Starting Address High 00 Starting Address Low 03 Value High FF Value Low 00 Example 4a Read All Parameter Value Request for reading all the parameter values Field Name Example Hex Slave Address 32 Function 03 Starting Address High 00 Starting Address Low 06 Number of Registers High 00 Number of Registers Low 0A Example 4b Read All Parameter Value Reply for reading all the parameter values Field Name Example Hex Slave Address 32 Function 03 Byte Count 14 Data 20 Bytes XX XX Error Check Low XX Error Check High XX Example 5 Write Lower setting Value Request and Reply for Writing single parameter Field Name Example Hex Slave Address 32 Function 06 Starting Address High 00 Starting Address Low 06 Data Value High 00 Data Value Low 32 Example 6a Write All Parameter Value Request for Writing all the parameter values Field Name Example Hex Slave Address 32 Function 10 Starting Address High 002. Tap No along with the status of last Tap Change 6 Tap count Resetable Oy GS Note Parameters are not updated automatically Use Read Parameters Button point 7 in figure 1 to read the values of parameters point 5 in figure 1 The three LEDs point 11 in figure 1 indicate Under Voltage Over Voltage and Control Fail conditions When any of the condition occurs respective LED goes red along with the text These parameters are continuously updated at a fixed interval Min Max and Tap Count are resetable parameters To reset press respective Reset button or press Reset All button to reset all three values at once Resetting Min and Max will record Current PT Voltage whereas resetting Tap Count will make the recorded count 0000 The Raised mark on side of Tap No figure 2 shows the status of Last Tap Change Operation with respect to previous Tap No i e whether the Tap was raised or lowered with respect to previous Tap No max TAP No 12 foe Note when the program is started by default the Tap Change Status is shown as Raised Figure 2 Tap No with Raise indication Programming Mode Programming mode allows changing the set parameters of AVR Use Program Parameters button point 6 in figure 1 to enter the programming mode Lower Setting 5 Under Voltage 80 oK CFR 30
3. X If program is closed without disconnecting from the unit then it asks whether you really want to quit the program or just minimize it to system tray If program is minimized to system tray it disappears from the screen but the data logging if enabled works in the background whereas closing the program closes it completely i e it stops data logging also Data Logging By default logging of parameters is disabled To enable logging check the Enable Logging by going to Tools gt Options gt Enable Logging and click it Clicking on Enable Logging toggles between enable and disable logging Note Enable Logging function is available on both windows i e Main window and Log window The following Parameters are logged 1 Date 2 Time 3 PT Vg PT Voltage 4 PT KV PT Voltage in KV 5 Min Recorded Minimum Voltage 6 Max Recorded Maximum Voltage 7 Tap No Current Tap Number 8 Tap Count Recorded Tap Change Count To open the Log Window figure 4 go to Tools gt Show Log or press Ctrl Alt L on the key board Log period and Log Interval Log Period No of months for which the data will be saved in log file Log Interval No of minutes after which a new entry will be added to log To change the Log Period and Log Interval go to Tools gt Customize gt Logging Interval This will open a window where Log Period and Log Interval can be changed By default Log Peri
4. H Reset Minimum Write only 03 H 05 Reset Maximum Write only 04 H 05 Reset Tap Count Write only 05 H 05 olding Registers Parameters Parameter Address Associated Functions Lower Setting 06 H 06 Nominal Voltage 07 H 06 Raise Setting 08 H 06 Primary Voltage KV 09 H 06 Under Voltage 0A H 03 06 16 Over Voltage 0B H 06 Timer 1 0C H 06 Timer 2 0D H 06 Control Fail delay OE H 06 Maximum Tap OF H 06 4 Bit Addresses Parameters Bit Address Associated Function Auto Manual Mode 00 H 01 05 i Linear Integral 01 H Examples of MODBUS Requests and Replies Example la Read Holding Register Request for reading all the variables Field Name Example Hex Slave Address 32 Function 03 Starting Address High 00 Starting Address Low 00 Number of Registers High 00 Number of Registers Low 06 Example 1b Read Holding Register Reply for reading all the variables Field Name Example Hex Slave Address 32 Function 03 Byte Count 0C Data 12 Bytes XX XX Example 2a Read LED Conditions Request for reading UV OV and CF conditions Field Name Example Hex Slave Address 32 Function 01 Starting Address High 00 Starting Address Low 00 Number of Registers High 00 Number of Registers Low 03 Example 2b
5. Starting Address Low 06 Number of Registers High 00 Number of Registers Low 0A No of bytes 14 Data 20 Bytes XX XX Example 6b Write All Parameter Value Reply for Writing all the parameter values Field Name Example Hex Slave Address 32 Function 10 Starting Address High 00 Starting Address Low 06 Number of Registers High 00 Number of Registers Low 0A Trouble Shooting 1 Check for connections Check that all A s are connected together Check all B s are connected together and all Gnd s are connected together Sy te 2 at Start with a simple network one Master one Slave and check whether communication succeeds Make sure that each instrument has a unique address Check that MODBUS mode is set to RTU Check that Serial parameters Baud Rate and Parity are correctly configured 10
6. 0 Exit Pro gram Under Voltage Range 60 to 95 Mode Nominal Voltage 110 OverVakage 120 OK Max Tap 35 Program Alf Raise Setting 5 mi 10 oK J Dp Mode Auto v Load Defaults KV Voltage 22 tz 5 oK Ct Mode Linear v Figure 3 Programming mode When in programming mode the Program Parameters button changes to Exit Program Mode the Read Parameters button changes to Program All button and Load Defaults button is shown as in figure 3 above Now the user can change the required parameters within its specified limits If the entered value is out of the parameters specified limits then the control is locked to that parameter until and unless the correct value i e value within its limits is entered Also a pop up is displayed showing correct value range for that parameter To know the limits of the parameters before entering the new value hold the cursor on the value of that parameter This will show a text message indicating the permissible range for that parameter as shown for Under Voltage parameter in the figure 3 above Program All button programs all the parameters simultaneously Load Defaults button is used to load the default values of all parameters for programming Closing the Program To close the program click on the Disconnect button if the program is connected to the unit Then click red button on top right of the window marked
7. EMCO ELECTRONICS An ISO 9001 2008 Mfg Co AVR EE 303C with Communication RS 232 amp MODBUS Instruction Manual EMCO ELECTRONICS Head 302 Vasan Udyog Bhavan Senapati Bapat Marg Lower Parel W Office Mumbai 400 013 Tel 91 22 2492 3183 2490 2283 m Fax 91 22 2495 1024 E mail office emcoelectronics org Factory Unit No 13 Kedarnath Tungareshwar Indl Complex No 1 Sativali Vasai E Dist Thane 401 208 m Tel 91 250 2481 783 6481 782 m Fax 91 250 2481 087 m E mail mumbai emcoelectronics org South 15 Wood Street 1 floor Richmond Road Bangalore 560 025 Office m Tel 91 80 2557 0215 m Tel Fax 91 80 2556 6606 E mail emcoblr bgl vsnl net in www emcoelectronics org CONTENTS Introduction Software Installation Uninstallation Main Screen Details Basic Operation Programming Mode Data Logging RS 485 MODBUS Communication Supported MODBUS Commands Register and Bit addresses Examples of MODBUS Requests and Replies Trouble Shooting Important Note For AVR operations and other details please refer AVR EE 303 Instruction Manual Introduction Emco s AVR EE 303C has additional Communication facility Supported Ports are RS 232 and RS 485 for MODBUS protocol RS 232 Communication is established via PC Software provided with the unit All the variables such as PT KV Min Max Tap No and Tap Count can be monitore
8. alue with respect to search parameter are searched and displayed Similarly if only To value is entered and From is left blank then all records lesser then To value are searched If both the values are entered then that range of records are searched When both are blank all records are displayed EMCO ELECTRONICS EE 303 Log By Date Options By PT voltage Customize By KY Voltage By Maximum By Tap No By Tap Count Figure 5 Search menu When using search by Date none of the box can be left blank For ease of use dropdown calendars are provided to make date entry easy and error free Search by Date also provides Graph plotting facility Graph can be plotted either for all records or for searched by date records To plot the graph click on the Graph button on search by Date screen To plot the graph for few days first search the records by appropriate date and then plot the graph as shown in the figure 6 below E EMCO ELECTRONICS EF 303 Log Records Graph 6 21 2010 6 22 2010 6 22 2010 6 22 2010 6 22 2010 6 22 2010 6 22 2010 6 22 2010 118 lalate f 112 Fa 110 Ta 108 oa i gt S a Search Recods by Date Frem 6 21 2010 To 6 21 2010 Figure 6 Graph plotted using Search by Date Note that Graph button changes to Records button to switch back to records window from graph window Graph shows PT Voltage with res
9. d simultaneously on the computer LED s indicating Under Voltage Over Voltage and Control Fail conditions are also displayed on software All the parameters such as Lower Setting Raise Setting Nominal Voltage Kilo Volts Under Voltage Over Voltage Timer 1 Timer 2 Control Fail Delay Maximum Tap Operating Mode and Control Mode can be simultaneously monitored Minimum Maximum and Tap Count recording can be reset individually or at once In manual operating mode Lower pulse and Raise pulse can be issued via software Data logging can be enabled for Variables like Date Time PT Voltage KV Minimum Maximum Tap No and Tap Count Database can be searched with respect to all the variables except time Also graph plotting of database can be done using Search by Date in one click MODBUS Communication is established using RS 485 port provided at the rear panel All the variables can be monitored via MODBUS LED s indicating Under Voltage Over Voltage and Control Fail conditions can be monitored Also resetting of Minimum Maximum and Tap Count can be done using MODBUS Minimum System Configuration e IBM Compatible Pentium 4 Processor e 512MB RAM e 500MB of Harddisk Space Software Installation Software installation is very easy Just insert the CD labeled AVR EE 303C Monitoring and Controlling Software in the CD Rom drive This will automatically start the installation Initially it checks for the required compone
10. meter Programming mode Click again to exit Read Parameters Button Read all parameter values In Programming mode it functions as Program All Button Display 1 PARA No as displayed on the AVR unit Display 2 Variable or Parameter value as displayed on the AVR unit Display 3 TAP No as displayed on the AVR unit Undervoltage Overvoltage and Control Fail condition LED s as displayed on the AVR unit Shows Current mode of the software i e Monitoring Programming or Disconnected Connection status Indication Green when unit is connected Red when unit is automatically disconnected No color when manually disconnected Date and Time Progress Bar Visible only when Program All feature used Basic Operation Starting the Program Once the Setup is completed to start the program go to Start Menu gt All Programs gt Emco Electronics gt AVR EE 303 This will bring up the main screen To connect to the unit click Connect button Once the unit is connected it will read all the Variables LED Conditions and Parameter values Monitoring Mode In Monitoring mode Display 2 shows PT Voltage on LV side with parameter number L on Display 1 Display 3 shows the Tap No as on AVR Monitoring mode monitors the following variables continuously 1 PT Voltage Primary side KV Minimum Recorded Voltage Resetable Maximum Recorded Voltage Resetable
11. nts If ok then it starts the installation If all the required components are not found then it starts installation of this missing components During installation it first gives the warning about Unknown Publisher and asks whether you want to install it anyway Click on the Install button This will install the software After the software is installed successfully it automatically runs the program i e it opens the main screen for you as shown in figure 1 Software Uninstallation Incase you need to uninstall the software go to Control Panel gt Add Remove Software find the entry for AVR EE 303 Click on Change Remove This will start the uninstallation wizard Select Remove the application from this Computer and you are done The software will get uninstalled CO ELECTRONICS AVR EE 303 Monitoring and Controlling Software is Figure 1 Main Screen with Details Main Screen Details Sh OS 10 11 12 13 14 15 Menu Bar Allows Selection of different commands such as Show Log Options Customize etc Connect Shows and allows selection of available ports for communication Connect Button Connect to AVR unit after selecting port Shows the values of all variables Also Recorded parameters can be reset Shows the Parameters and their values Press respective OK button to update the value in the unit Program Parameters Button Enter Para
12. od is set to 1 month and Log Interval is set to 15 minute The range for Log Period is 1 to 12 months and the range for Log Interval is 1 to 60 minutes E EMCO ELECTRONICS EE 303 Log a Date 6 21 2010 6 21 2010 6 21 2010 6 21 2010 6 21 2010 6 21 2010 Time 5 11 00 PM 5 1200 PM 5 1200 PM 15 14 00 PM 5 1500 PM 51600 PM 6 22 2010 6 22 2010 6 22 2010 6 22 2010 6 22 2010 6 22 2010 6 22 2010 6 22 2010 6 22 2010 6 22 2010 6 22 2010 6 22 2010 6 22 2010 6 22 2010 Search Records by Date From 6 22 2010 To 3 5000AM 8 51 00 AM 95200 AM 2 5300 AM 8 54 00 AM 8 5500 AM 8 56 00 AM 8 57 00 AM 8 56 00 AM 85300 AM 9 00 00 AM 3 01 00 AM 3 0200 AM 00AM 6 22 2010 Search Figure 4 Log Window Search facility is available to search records based on different parameters Figure 5 Default is Search by Date Other search criteria includes search by PT Voltage KV Min Max Tap No and Tap Count To display the records click the Show button on log window Now Show button changes to Show AII button and clicking the Show All button displays all the records in the log file Each search option except search by Date has two boxes for defining the range i e From and To If search value is entered only in From box and To is left blank then all the records greater then From v
13. pect to Date and Time Date and Time are displayed for each and every point on graph Time on lower X axis and Date on Upper X axis Due to limited plotting space No of date and time values displayed on screen are limited To view all the entries either use Mouse Scroll or Z button to Zoom In the graph Z button to Zoom Out the graph All button to remove all the Zooming and display the complete plot within the plot area C button to clear the graph contents RS 485 MODBUS Communication MODBUS Protocol is a Request Reply protocol It uses unique Slave Id or Device Id for identifying and addressing the devices connected over network MODBUS Master sends request containing the unique Slave Id over the network All the slaves look for the address field in the request The slave whose address matches with the address contained in the request accepts the request After decoding it processes the request and prepares the response If it finds any error in the request it frames error response Else the response contains the data which master has requested and puts it on transmission media The Master after issuing the request waits for valid slave response If it gets valid slave response within timeout period it processes it Else it gives the Timeout error AVR EE 303C s default Device ID is 50 32 Hex default Baud Rate is 19200 BPS and default Parity is Even parity Slave address can be configured an
14. ywhere within 1 to 255 All the variables viz PT KV Min Max Tap No and Tap Count can be monitored via MODBUS The status LED Conditions such as Under Voltage Over Voltage and Control Fail can be read and resetting of Min Max and Tap Count can also be done One RS 485 port 3 pin Terminal Block is provided on the rear panel for MODBUS RTU Communication All the variables and LED Conditions can be read Also Max Min and Tap Count can be reset via MODBUS Slave Address Baud Rate and Parity can be configured via EE 303 software provided with the unit Select Modbus gt Configure from menu bar of Main window SUPPORTED MODBUS COMMANDS Note The values except Tap No Tap Count and Max Tap read via MODBUS communication are without decimal point i e actual value multiplied by 10 Sr Function Code Function Name 1 01 Read Coil Status 2 03 Read Holding Registers 3 05 Write Single Coil 4 06 Write Single Register 5 16 10 Hex Write Multiple Register Register and Bit Addresses 1 Holding Registers Variables Parameter Address peor Function PT Voltage 00 H KV Voltage 01 H Min Voltage 02 H 03 Max Voltage 03 H Tap No 04 H Tap Count 05 H 2 B 3 H it Addresses Variables Bit Address Aesop aed Function Under Voltage Read only 00 H Over Voltage Read only 01 H 01 Control Fail Indication Read only 02
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