Using the Totalizer Maintenance Mode
Contents
1. 5 8 9 o z 8 2 Ja 5 2 5 9 2 3 amp 9 Z Ix 2 9 lo Q o 9 B o 5 i8 3 le 3 4 lt o 5 D Q 5 la a 5 IN a o NS IN bo jo od S a D 5 o x c o o T 20 D o 2 5 3 o 19 a o 2 m a o o o o JO f o o o o o o o Z 2 3 5 5 a o o ja o m z E ES jo gt cd lt Ja 8 4 amp S o o D I D e o lt 2 2 lt O S e o 1 2 E D o 5 5 5 o o o ess um o o o lt IZ lo o o amp o Ia Q 31 9 S 4 amp 2 A 9 jo 2 2 2 2 o o o o o ITI HF o a e lt m o n p f m o 52 0000 0010 Rev E Y Omni Page 7 of 9 TB 980701E Using the Totalizer Maintenance Mode DATABASE POINTS ASSOCIATED WITH THE MAINTENANCE MODE Database Point Number Database Point Description Meter 4 19599 15639 15739 Maint Mode Energy Flow Rate 17589 17689 17789 17889 NOTE For Revision 27 74 30 the following Meter 1 database points have been moved to the following Modbus addresses e 51922. 0 52 0000 0010 Rev E Page 5 of 9 TB 980701E Using the Totalizer Maintenance Mode Mass Meter n Enter Mai nt Flow tonnes hr Meter 1 0 Mai nt Total tonnes e 1 Energy Meter n Enter Mai nt Ener gy flowrate Meter 1 0 Maintenance Totalizers NOTE Meter Run Database Registers The n in the database point number represents the meter run number n 1 2 3 or 4 In the totalizer maintenance mode the flow computer will realize all normal calculations and accumulate resulting flow quantities into special maintenance totalizers The special totalizer registers reset to zero 0 upon entry to maintenance mode or can be manually reset while in the maintenance mode This reset will not affect the regular meter run totalizers In this mode the LCD screen will display meter run current flow rate and accumulated flow rate for the maintenance mode The following are the Modbus database registers assigned as special maintenance mode totalizers Note Maintenance Mode Totals Modbus registers introduced in v27 74 30 firmware Table 1 e 5n92 Gross Maintenance Total e 5n93 Net Maintenance Total e 5n94 Maintenance Total e 5n95 Energy NSV Maintenance Total Status The following status points are provided in the OMNI Flow Computer s Modbus database to indicate when a meter run is in the totalizer maintenance mode e Meter Run 1 Maintenance Mode Status e Meter Run 2 Maintenance Mod
3. 3 places past the decimal The number of digits wide for the totalizers will be either eight 8 or nine 9 digits according to the setting configured in the Password menu of the flow computer for the normal totalizers 52 0000 0010 Rev E NS Omni Page 4 of 9 TB 980701E Using the Totalizer Maintenance Mode 4 reset the current totals for an individual meter run from the Display mode press Alpha Shift Diag Meter n Enter and scroll down to the Reset Maint Totals prompt and press Alpha Shift Y Enter NOTE When the maintenance mode starts after selecting the type of measurement gross net mass or energy the flow rate and totalized flow are zero 0 METER 1 MAI NTENANCE Maintenance Mod N Reset Maint Tot Y Toggle Maint Mo Displaying the Maintenance Totals e als de In the display mode select the displays you want by entering the corresponding key press sequence as follows e For Gross Flow Maintenance Totals press Meter n Gross e For Net Flow Maintenance Totals press Meter n Net e For Mass Flow Maintenance Totals press Meter n Mass e For Energy Flow Maintenance Totals gas applications only Revisions 23 734 and 27 72 press Meter n Energy The OMNI LCD screen will display Gross Meter N Enter Net Meter n Enter Mai ntenanceMode am Meter 1 0 Mai ntenanceMode nm h Meter 1 0 Mai ntenanceMode nm h Meter 1
4. Last Updated 02 November 2009 TB 980701E Technical Bulletin Using the Totalizer Maintenance Mode OMNI FLOW COMPUTERS INC 2 SW e 12620 West Airport Boulevard Suite 100 US Omni Sugar Land Texas 77478 United States of America Phone 281 240 6161 Fax 281 240 6162 www omniflow com 52 0000 0010 Rev E TB 980701E Using the Totalizer Maintenance Mode NOTE User Manual Reference This Technical Bulletin complements the information contained in Revisions 22 23 24 26 and 27 Totalizer Maintenance Mode This mode allows the operator to verify meter run calculations by measuring meter run flow rate gross net mass or energy without impacting the custody transfer totals Table of Contents GOOD ope cont been uoto p o A santana 3 PADS le RR NR E DER TITEL 3 Procedure to Start and End Maintenance Mode 3 Maintenance Mode Flow Rate and Totalizer Resolutions eee 4 Displaying the Maintenance TOTaIS cto rrr 5 MOTOR 6 NIE MUI EHE UNI re ahs he RH eh Bee 6 Maintenance Mode Command ccceccccceeeceeseecececseeueeeeeeuecesueeusueeueeaseeseuauseeeeeaaseeeueaaseeeeeaaseeeneaes 6 Modbus Database Points Associated with Totalizer Maintenance 7 52 0000 0010 Rev E w A Omni Pag
5. Moved to 15536 e 5193 Moved to 15537 e 5194 Moved to 15538 e 5195 Moved to 15539 e Meter 2 has been moved to 15636 e Meter 3 has been moved to 15376 e Meter 4 has been moved to 15836 52 0000 0010 Rev E Omni Page 8 of 9 e TB 980701E Using the Totalizer Maintenance Mode DOCUMENT REVISION HISTORY DOCUMENT INITIAL RELEASE DATE ccccccccccccccccceeeeeeeeeeeeeeeeeeees 28 May 2003 REVISION DATE PURPOSE CHANGE REQUEST A 28 May 2003 Maintained on Web Initial release B 26 Feburary 2007 Maintained on Web C 26 May 2008 Maintained on Web D 21 April 2009 DCR 090122 E 02 November 2009 DCR 090310 52 0000 0010 Rev E Y Omni Page 9 of 9
6. e 2 of 9 TB 980701E Using the Totalizer Maintenance Mode Scope The Maintenance Mode feature applies to the following application revisions e 24 744 Turbine Positive Displacement Coriolis Liquid Flow Metering Systems with K Factor Linearization metric units only e 23 74 27 74 Office Turbine Gas Flow Metering System e 22 74 30 26 74 04 Turbine Gas Flow Metering System Abstract The purpose of maintenance mode function is to allow operators to verify meter run calculations This function measures meter run flow rate gross net mass and also energy in gas firmware applications without impacting the overall operation of the custody transfer totals When in the maintenance mode the flow measured by the target meter run will not be accumulated in the meter run and or station totalizers used for normal operation Furthermore any D A outputs configured to output flow rate will not be impacted While the specific meter is in the maintenance mode the meter will display zero 0 flow in all the non maintenance mode displays Procedure to Start and End Maintenance Mode The maintenance mode function requires a technician Level 1 password The following is the required procedure to Start and End the Maintenance Mode e 1 Enter a positive value for low flow cutoff or active frequency refer to Meter Run Setup in Volume 3 of the User Manuals A positive non zero entry must be made to ensure that the meter active fla
7. e Status e Meter Run 3 Maintenance Mode Status e Meter Run 4 Maintenance Mode Status Maintenance Mode Command The maintenance mode function can be activated deactivated remotely providing that the flow rate is zero 0 and the meter run is inactive 1n05 0 The meter run totalizer maintenance mode is activated by setting one or all the following Modbus database points to 1 the mode will be ended by writing O to these same database points e Meter Run 1 Toggle Maintenance Mode Command e Meter Run Z2 Toggle Maintenance Mode Command e Meter Run 3 Toggle Maintenance Mode Command 52 0000 0010 Rev E NS Omni Page 6 of 9 TB 980701E Using the Totalizer Maintenance Mode e Meter Run 4 Toggle Maintenance Mode Command Modbus Database Points Associated with Totalizer Maintenance Mode Table 1 comprises the database registers for the maintenance mode function Table 1 Database Registers MODBUS DATABASE POINTS ASSOCIATED WITH THE MAINTENANCE MODE Database Point Number 4 i O No 1 Yes 3409 5492 T m NSV Maintenance Mode Totalizers 5495 2740 Note The following Modbus registers were introduced in v27 74 20 firmware 18875 18876 18877 18878 19612 13619 19614 19615 13616 Maint Mode Net Flow Rate 13617 19618 19619 15836 15897 16638 z lt Z Z Z 5 9 5 l o d 9 sz 5 Z E 5 5 2 D 5 S S 8 2 S 2
8. g operates correctly at zero 0 flow e 2 Shutdown the meter flow rate Zero e 3 In the display mode press Alpha Shift Diag Meter n Enter The OMNI LCD screen will display NOTE Maintenance Mode Active Inactive If there is a Y next to Maintenance Mode in the display then the mode is active The maintenance mode is inactive when an N is displayed Mai ntenance Mode N Reset Maint Totals Toggle Maint Mode e 4 Press V down arrow key to place the cursor at Toggle Maint Mode and press Alpha Shift Y Enter Depending on the maintenance mode status the OMNI will toggle the mode If the maintenance mode is active then this step will end or turn off the mode and vice versa You will be prompted for the password The LCD screen will display NOTE Configuration Settings The maintenance mode uses current flow computer configuration settings i e additional configuration entries are not required METER 1 MAI NTENANCE Mai ntenance Mode N Reset Maint Totals Password 52 0000 0010 Rev E NS Omni Page 3 of 9 TB 980701E Using the Totalizer Maintenance Mode e 5 the Level 1 password and press Enter The OMNI LCD screen will display a screen similar to the following METER 1 MAI NTENANCE ntenance Mode Reset Maint Totals Toggle Maint Mode NOTE When the maintenance mode starts after selecting the type of measurement gross net mass or ene
9. rgy the flow rate and totalized flow are zero e To end deactivate the totalizer maintenance mode repeat bullet steps two 2 and five 5 Maintenance Mode Flow Rate and Totalizer Resolutions After a RAM reset the Maintenance Mode Flow Rate and Totalizer resolutions are automatically defaulted to the same settings as the normal i e non Maintenance mode flow rates and totalizer settings The following is the required procedure to Set or Change the Maintenance Mode Flow Rates and Totalizer resolution settings without affecting the normal mode flow rate and totalizer settings e You should ensure that you have stopped the Maintenance Mode by following the procedures in the previous section titled Procedure to Start and End Maintenance Mode NOTE Maintenance Mode Active Inactive If there is a Y next to Maintenance Mode in the display then the mode is active The maintenance mode is inactive when an N is displayed METER 1 MAI NTENANCE Mai ntenance Mode N Reset Maint Totals Toggle Maint Mode 1 From the Display mode press Alpha Shift Diag Meter Enter The LCD screen will display MAI NTENANCE MODE ion Gro Tot ion Net Tot ion MassTot ion Eng Tot ion GroFlow ion NetFlow ion MasFlow Resolution EngFl ow 3 Place the cursor on each of the settings to change the resolution Each of the totalizers and flow rates can be set independently from zero 0 to three
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