EN2PA-R User Manual - English
Contents
1. Hiprom Technologies 8 8 2010 USER MAN UAL Section_____ Page INTRODUCTION 2 INSTALLATION 3 HARDWARE 3 SOFTWARE 6 SETUP f RSLOGIX FIELD DEVICES 10 DEVICE TYPE MANAGER DTM 12 OPERATION 14 RSLOGIX 14 WEB INTERFACE 1 SPECIFICATIONS 19 ELECTRICAL 19 MECHANICAL 20 APPENDIX 21 A DISPLAY STATUS 21 B OPERATING MODES 29 llo Hiprom Technologies 8 8 2010 INTRODUCTION The 1788HP EN2PA R provide a fast and integrated solution for adding Profibus PA field devices to any Logix platform This linking device provide a direct link between Profibus PA and EtherNet IP with no intermediate Profibus DP layer required Integration into RSLogix5000 is seamless when making use of the modules Add On Profiles AOPs and the process variables of each field device appear in engineering units without any required user logic The entire Profibus PA configuration is done within the RSLogix5000 environment Additional PV statuses and diagnostic information is also available The module supports a maximum of 24 field devices and can supply a 500mA per trunk It will also allow the user to view detailed diagnostics from each field device using its DTM device type manager directly from the Logix environment with Hiprom s FDT ThinFrame The user will be able to view a scope trace of the signal of each field device and provide extended statistics with regards to packet count send received class 1 class2 etc llo Hiprom Technolo2. 80 is sent with the process variable Web Interface The web interface can be used from any PC that has a web browser It will provide all the diagnostics of the module as well as each field device as shown below 17 E pre a d Hiprom Technologies 8 8 2010 4 amm HIPROM 1788HP EN2PA R W Main ca Home EE O Diagnostics PA Node Address 15 C Trap EN Status Ok SE Network settings Online True Eventlog ConfigRunning True i hC Debug Ident 0x04C2 Fly Statistics i iL Ethernet Process Variables Y Profibus PA PV 1 1 1902 El Profibus PA PV2 823 8663 ae PA Master Py 3 0 0000 La Field Device Index 0 PV4 0 0000 r Pek E Index 1 PV5 0 0000 p la Dewine Index 2 PVE 0 0000 ye ico C Index 3 pyT 0 0000 Field Device Index 4 F Field Device Index 5 Es ita a Field Device Index 6 F Field Dewice Index 7 Process Variable Status LY ene PV 1 Status 0x8D SE Field Device Index 9 PV 2 Status 0x80 C Field Device Index 10 PV 3 Status 0x00 The web interface can be accessed by entering http IP address into the address bar of the browser as shown below Eg 1788HP EN2PA R IP address 196 135 145 234 rn htEp 196 135 145 234 Hiprom Technologies 8 8 2010 SPECIFICATION Electrical specification value Power will be connected to the 1788HP EN2PA R using the 4 way Power Requirements phoenix connector Operating Voltage 9 to 32 V 260 mA at 24 V with
3. no field devices attached Power Consumption PA Bus current supply 500 mA at 24 V per trunk Operating Temperature 0 to 50 C Storage Temperature 0 to 50 C Relative Humidity 5 to 95 non condensing Operating Shock Storage Shock Vibration Emissions ESD Immunity Radiated RF Immunity EFT B Immunity Conducted RF Immunity Enclosure Type Rating IP20 18 AWG 0 75 sq mm maximum 24 AWG 0 25 sq mm minimum Power Conductors copper wire Ethernet Conductor CAT5 STP 18 AWG 0 75 sq mm maximum 24 AWG 0 25 sq mm minimum Profibus PA Conductor copper wire Mechanical agad Bunun vd snqyolg o dawaa dVdcN3 dH884Z L 152 mm 59 3 mm Hiprom Technologies 9 8 2010 Y VdcN3 uiu 08 uu GEL Hiprom Technologies 8 8 2010 APPENDIX A Display Status The display of the 1788HP EN2PA R will provide certain diagnostics to the user Below are the various screens Main The main screen will always be displayed unless the user has toggled to another screen If the user has not toggled the screen again after 10 seconds it will default back to this screen PABus A 21 4V B 21 3V IP 192 168 1 123 e PA Bus A B This is the voltage of each bus e P This is the current IP address set If BOOTP has been enabled this will indicate BOOTP e STS This will show the current module status ok No events new device found A new field device is on the bus 21 lo redundancy ok
4. update as shown below HSProcessUtility File 5D Catalog DTM Catalog Once this is done the user can select the DTM in the AOP by simply selecting the correct DTM given and select open as shown below E 12 Hiprom Technologies 8 8 2010 Model TEMP PA THT 184 Ident 0 1523 Vendor FileName Eha 1523 GS5D Revision 3 DTM pen DET A Temp TMT 154 P Y1 0 11 Temp TMT 184 PA V1 0 1 1 WatchDog Enable TSDR Min 100 Freeze Enabled Group Ident Max 200 T Sync Enabled Slave Lock Watch Dag 10 x 10 610 I Slave UnLock WATCHDOG ms User Parameterization Data Byte 1 E h Ok Cancel A NOTE Sometimes the user will be presented with multiple DTMs of the same device but different revisions The user must select the correct one for the specific field device When using a FDT Frame the user will first need to add the Comm DTM HS Ethernet IP Under this Comm DTM the user must the select the 1788HP EN2PA R channel DTM The user will need to configure the IP address and Max Scan Address Once this is done the user can access field devices or the PA Master diagnostics as given in the profile r1 Hast PC El 2 HS Ethernet lP 4 HS E E1 Ae 1788HP EN2PA R db Channel 441788 M e ITEMP TMT 184 PA V1 D 1 4b Channel 16 is ern BE Pressure Profile DTM dp Channel 15 G Fres Hiprom Technologies 8 8 2010 OPERATION RSLogix Each 1788HP EN2PA R consumes a
5. Bus Only Non Terminated Single Master Dual Bus Terminated Single Master Dual Bus Non Terminated Single Master Split Bus Terminated Hiprom Technologies 8 8 2010 Master Mode 9 Master Mode 8 Master Mode 7 Master Mode 10 Single Master Split Bus Non Terminated Single Master Ring Bus MultiMaster A Bus Only Terminated MultiMaster A Bus Only Shared Termination Hiprom Technologies 8 8 2010 Master Mode 14 Master Mode 13 Master Mode 12 Master Mode 11 MultiMaster A Bus Only Not Terminated MultiMaster B Bus Only Terminated MultiMaster B Bus Only Shared Termination MultiMaster B Bus Only Not Terminated Hiprom Technologies 8 8 2010 Master Mode 16 Master Mode 15 Master Mode 17 Master Mode 18 Hiprom Technologies 8 8 2010 MultiMaster Dual Bus Terminated MultiMaster Dual Bus Shared Termination MultiMaster Dual Bus Not Terminated Listen Only Dual Bus Not Terminated LISTEN ONLY q Hiprom Technologies 8 8 2010 S HIPROM TECHNOLOGIES HIPROM TECHNOLOGIES TEL 27 11 787 4458 FAX 27 11 787 7937 POSTAL P O Box 732 Pinegowrie South Africa 2123 PHYSICAL 369 Pretoria ave Ferndale Randburg South Africa
6. E Any changes will only take effect once it has been downloaded to the 1788HP EN2PA R module e Upload If the user does not have the configuration of the 1788HP EN2PA R it can be uploaded and saved in the RSLogix project A NOTE The configuration will only be saved in the RSLogix project if the user has pressed the Apply button in the AOP e Scan The scan function is used to find the field devices on the local PA bus and apply a default configuration to each one according to the manufacturers GSD file The AOP will scan up to the Max Scan Address configured in Master config e Add Device The user can also add a device manually is for example the device is not currently connected As a device is selected the same default configuration is done to the field device configuration e Copy Device In the case where the user has setup a field device in a specific way and there are lots of the same devices in the same tree the user might want to copy the current field device to all the other locations instead of having to setup each field device from scratch e Delete Device If a device need to be deleted from the tree the user will use this command e Delete All This is used to remove all field devices from the configuration PA Master Configuration e Topology Mode The user must select the correct topology mode for the application The graphical representation must be used to match the topology A e PA Node FA 9 Hiprom Tec
7. HETIBERP E PARONA FieldDevice00 Data PY Real 111881 Float REAL PARUllAFieldDeviceDDDataPVHea2 852 3965 Fot REAL PAROTIAFieldDevice00 Data PYReal3 Ft REAL PAROTIAFieldDexice00 Data PY Reald Ft REAL PARONA FieldDevice00 Data PWReal5 Ft REAL PAROTIAFieldDevice00 Data PWRed6 M9 Flo REAL PAROTIAFieldDevice00 DataPvRealf Ot REAL PAROTIAFieldDexice00 Data PY Real8 Ft REAL EPAROT IA FieldDexice00 Data PWStatust 16f d Hex SINT EPAROT IA FieldDevice00 Data PY Status2 He SINT EPAROT IA FieldDevice00 Data PWStatus 16800 Hen SINT EIPAROTIAFieldDevice00 Data PvStatust ROO Hex SINT PARONA FieldDevice00 Data PyStatus5 SSCs SOSH SINT EPAROT IA FieldDexice00 Data PyStatu OH SINT EPAROT IA FieldDevice00 Data Pv Status He SINT PAROT IA FieldDexice00 Data PWStatus8 He SINT PAROT A FieldDeviceDO D ata Pint lA Decimal DINT FE PAROTIA FieldDeviceQQ D ata PvInt2 aaa Decimal DINT E PAROT 1A FieldDeviceDO Data PVInta A ea DINT ye ILLI LA DH A CAT S usn Po ER Lk ni Pizzi I Miki T e PANode This is the node number of the field device on the PA bus e OnlineRunning This is set when the device is online and exchanging cyclic data a d 15 Hiprom Technologies 8 8 2010 e ConfigFault If there is a fault in the configuration of the field device then this bit will be set e ExtDiagAvail When the field device has extra e
8. gies 8 8 2010 INSTALLATION Hardware Power The 1788HP EN2PA R requires 9 32V input to operate The user has the option to connect a second power supply for redundant purposes to the module Below is the power supply connection Pwr 1 Pwr 2 optional Pwr GND shield Hiprom Technologies 8 8 2010 Profibus PA The Profibus PA network must be connected via the PA terminal on the module Below is the pin out is as follow Pin Description PA Middle Shield Positive Negative Shield a a aga Positive Negative Shield The PA cable color code is used as set in IEC61158 2 Physical Layer Specification Ethernet The module will connect to an Ethernet network using a RJ45 connector The module will ship with BOOTP enabled Thus the user can set the IP address using a BOOTP server or using the hardware switches The hardware switches is o n 4 Hiprom Technologies 8 8 2010 located under the front cover as shown below The Page button is used to toggle between different diagnostics on the display Switches RN Ethernet Switches dl AO Display Page Toggle Hiprom Technologies 8 8 2010 LLL I Module will boot with IP address 192 168 1 123 11213 L IL L LL JL 0 0 Module will boot with BOOTP enabled L JL IL For normal operation the switches must be set to 000 Software The user will need the fol
9. he user wants to add remove or change PVs the format might need to change The user can select between the following options for formats Process Variable Format 1 Byte 2 Bytes 3 Bytes 10 llo Hiprom Technologies 8 8 2010 4 Bytes Real 1 Byte with Status 2 Bytes with Status 3 Bytes with Status 4 Bytes with Status Real with Status A NOTE If the user is not certain about the format of the PV please refe to the user manual of the field device being used The user can choose the format clicking on the drop down menu and selecting as shown below Online h tj gt j x B ER A Overview E de Master 1 PANode 15 Device 26007 Pressure 263 265 20007 id Status d Config Slot 1 2 Status Slot 1 Analog Input 1 INPUT A PV Data 02 Analog Input Al shart Real with Status i D el Configuration A Lei ep Slot 2 Analog Input 2 INPUT Manual E Config 02 Analog Input AI shart Real with Status 3 Bytes E ohy A Oscilloscope a FDO1 16 de Status ja A PV Data 1 Byte with Status dA Configuration 2 Bytes with Status A d d 3 Bytes with Status po aria 4 Bytes with Status A Oscilloscope eal with Status Ok Cancel In some cases eg Positioner field devices there are multiple input and output PVs per slot The user will then manually need to configure the format for the slot This is done be selecting the Manual C
10. hnologies 8 8 2010 The PA Master 1788HP EN2PA R needs a node number to operate on the PA Bus The default is node number 1 e Max Scan Address The max scan address is used for one of two functions The first is when the module is operating it will constantly ping each node number in the background as to see if there are any new field devices connected The background scan will only run to the max scan address and restart at one The second is when the scan function is used it will only scan up to the maximum address given e Slave Timeout This is the time in milli seconds ms that the PA Master will give a field device to reply in before retrying the request A NOTE If the timeout is set too low some field devices will not be able to reply in time resulting in lost packets If the timeout is set too big then if a field device has gone offline it might take a long time before the PA Master will timeout that field device e Slave Retry The slave retry is used to determine the amount of times the PA Master must re request before dropping the connection e Class 2 MPPF This is used to determine the amount of acyclic data requests allowed per cyclic scan If the user has set e Slew Compensation This is not to be adjusted by the user Field Devices Each field device can have multiple process variables and each can have a different format In most cases the default configuration will correctly configure each PV but if t
11. lowing software to configure and use the 1788HP EN2PA R e Add on Profile AOP e 1788HP EN2PA R Device Type Manager DTM Both the applications can be found on the product CD or the Hiprom Technologies website www hiprom com llo Hiprom Technologies 8 8 2010 SETUP RSLogix The module must be added to the IO tree of the Logix Controller in RSLogix before the user can configure the device To add the 1788HP EN2PA R the user must select the module when adding it under a Allen Bradley Ethernet bridge eg EN2T as shown below 2 3 1 0 Configuration E 489 1756 Backplane 1756 47 m fa 0 1756 L55 Control_Processor A Bg 1 1756 ENBT A Ethernet Master i New Module FA Paste Ckri V H Allen Bradley o pad Mali pees pee nm When added the module requested packet interval RPI will default to 300ms If needed the user can change this depending on the field device count and update times required NOTE The RPI will determine the amount of Class 1 data requests send for the field devices configured on the PA Bus Thus if there are many field devices configured on the bus and the RPI is set too low the field devices will not be able to update in time and all acyclic PA data will be slow as Class 1 data is prioritized Please see Class 2 MPPF in the master configuration Once the module is added to the tree the user can open the properties by right clicking on the device and selecting the Properties option O
12. nce the properties window is open select the Configuration tab to open the 1788HP EN2PA R configuration page as shown below 7 cmm a d Hiprom Technologies 8 8 2010 D z DI a Bg EE E zi T e a a m z m General Connection Configuration Internet Protocol Port Configuration etwork Ve dor E t o Online hi i P Master Configuration PA Node NEZ Max Scan Address 20 v SlaveTimeout io Slave Retry Limit 5 Class 2 MPPF Es Slew Compensation 5 Topology SAT Single Master 4 Bus Only Terminated r Load Defaults Ok Status Running OF Cancel Apply Help apo Hojodo areo x1607 e Process Catalog This will launch the Process Utility that manages the GSD files and DTMS Thus if the user loaded new DTMs or GSD files the Process Utility must be launched and the libraries must be updated AN NOTE The user will not be able to configure a field device for cyclic communication unless the GSD file is in the Process Utility Catalog and the catalog has been updated as shown below HSProcessUtility File GSD Catalog DTM Catalog Add File Compile GSD Cat Download Hiprom Technologies 8 8 2010 Once the user is happy with the configuration it can be downloaded to the 1788HP EN2PA R The device will save the configuration in non volatile memory If the power is cycled then the module will use the last configuration saved A NOT
13. nfiguration of the PA Master the new field device bit will be set e MultiMasterActive Once the two PA Master modules have sync d and they have the same node number as well as the same configuration then this bit will be set A NOTE Both PA Masters must have exactly the same configuration master and field devices for the masters to be able to sync e MasterMode Po This will give the current topology implemented Please view Appendix B p a d 14 Hiprom Technologies 8 8 2010 e ModuleStatus This is currently reserved e Connection Status If a field device is online and running exchanging cyclic data then its field device index bit in the connection status will be set If the device goes offline the bit will be cleared Each field device will display its PA diagnostics as well as all available PVs and their status as shown below PAROTla FieldDevice00 aa HTATBBHP EN2 E PARIDIA FieldDeviced0 P Node A Decima SINT pPhR ll FeldDevceOnOnlneRuning Decimal BOOL PAROT IA FieldDevice00 Configfaut feria BOOL _ FRAROTIA FieldDevice00 ExiDiagAvaii Deal BOOL PAROT AFieldDevioe00 ParameteiFaut O Decimal BOOL RAROT l FieldDevice00 ParamateReg Decimal BOOL PAROT AFieldDevioe00 FreezeMode eri BOOL EPAROTA FieldDevica00 SyneModa ei B00L _ PPAROTIA FieldDevice00 watohDag Decimal BOOL E PARON IA FieldDeviceDD PAldent 16 04c2 He INT EPARHAFedDeweDnDua Tote
14. onfig tick box and clicking the configure button as shown below r Hiprom Technologies 8 8 2010 cine B H te Oo x wj pai A Overview E dh Master 1 PA Node 15 gt Device 2E00T Pressure 263 265 20007 a Pise Slot Configuration IE i On Id INPUT FORMAT OUTPUT FORMAT cM Foco 15 dn A Status I INPUT 1 Real with Status OUTPUT 1 Real with Status A ma f INPUT2 4 Bytes OUTPUT 2 A Configuration 7 ae A Advanced INPUT 3 EmptySlot OUTPUT 3 pun A Oscilloscope INPUT 4 zl FOO 16 O EmptySlot id Status INPUT 5 0 EmptySiot OUTPUT 5 e PV Data T A Configuration 4 A Advanced INPUT 7 O EmptySlot OUTPUT 7 iw r r I OUTPUT 4 r c r r a z INPUTS 0EmpySsit E n OUTPUT 8 O EmptySlot INPUT 8 O EmptySlot OF Cancel The user must select the number of inputs and outputs and their respective formats as given in the user manual of the field devices In the input Image of the field device the PV will be set as given in the manual slot configuration Device Type Manager DTM The DTM can be used either in the profile with the ThinFrame or using a FDT Frame eg AssetCentre of FieldCare NOTE The ThinFrame can only view diagnostics of the field device The user will need a FDT frame to configure and parameterize the field device The user must first update the DTM catalog by launching the Process Utility and selecting
15. redundancy err bus A tripped bus B tripped SAFE MODE e Field Device Success Below is the definition of the field device summary The success rate is the of packets send to packets received PA Master If the Page button is pressed the first screen is the PA Master screen as shown below Display Od gt gt gt 04 gt gt 04 gt 04 Od e XX Cd v XXX Ode er PA Master Hiprom Technologies 8 8 2010 Masters are synced The master modules are out of sync PA Bus A has tripped because of over current PA Bus B has tripped because of over current The module has been set into safe mode of packets received 95 80 70 60 50 Below 50 Unknown E DE DS ES E E E D D s i E D S GUN GO E Sf D NN R E E E E Y AW Bus A 21 4V 36 7mA Bus B 21 3V 34 8mA Temperature 34 50 C External Pwr 23 41V I NEED DE E E a R ES E e E GENS D D S S E E DOO C D PA Node 1 Bus A Enabled True Bus B Enabled True Bus A Tripped False Bus B Tripped False Bus A Term True Bus B Term True llo Hiprom Technologies 8 8 2010 e Bus A B First the PA Bus voltage is displayed followed by the current being drawn on that bus e Temperature This is the internal module temperature e External Pwr This is the external power feed voltage Field device As the Page button is pressed from the PA Master screen field device 0 to 23 will display it diagnostics a
16. rocess variable to be a 1Byte to 4 Byte format the user will find the data in this section Hiprom Technologies 8 8 2010 PARO1 D4 FieldDevice00 Al HT1788HP LENZ H PARON OA FieldDeviceDD PVInEi A Decima DINT ET PARMLOA FieldDeviceDD PVIni2 0 Decima DINT FEPAR LDAFilDeviceDDPVInG 0 Decima DINT PAROI 0AFieldDevice00 Pvind 0 Decima DINT FEPAR LDAFilDeviceDDPVnG 0 Decima DINT ET PAROTDA FieldDeviceDD PVIni OO Decima DINT EEPAR LDAFilDeviceDDPVIn 0 Decima DINT E PAROTDA FieldDeviceDD PVInia OO Decima DINT IFAROI 0A FieldDeviceDD PVStatust CIRO He SINT FEPAR LDAFieldDeviceDOPVStaus2 CIRO Hex SINT E PAR LOA FieldDeviceDD PVStatusa CIRO es SINT FEPAR LDAFieldDeviceDOPVStausd CIRO He SINT 1600 Hex SINT 1600 Hex SINT l6g00 Hex SINT l6g00 Hex SINT e PVinti PVInt8 If the user is using a field device that requires an output the data must be updated in the output image of that field device If a real value must be sent then use a copy function to update the PVInt A NOTE Please refer to the example code for a detailed example on how to update data for output modules e PVStatus1 PVStatus8 If the user has set a process variable to be a 1Byte to 4 Byte format the user will find the data in this section A NOTE Some field devices will only operate correctly once a valid Status for example
17. s given below Field Device 0 mur ED UC NES CSS CONES UE UE GNE E o GUUuw49 ys GOES UE CES CONES CONES UE UE CUNEO CONES GU GNO UE AX Un PA Node 15 Ident 0x1523 Status ConfigRunnning Leelee ee enni ee enni GEO ES GGG NES einen cane EO MU A Success 100 Pckt Send 22305 Pckt Recv 22105 Bad CRC 100 No Reply 100 e PANode This is the node number of the field device on the PA bus e Ident This is the ident number of the specific field device e Status This will show the current module status 23 llo Hiprom Technologies 8 8 2010 Not Connected The device can not be seen Online The device is online but not configured ConfigRunning The device is configured and exchanging data N A The device has not been added to the configuration e Success The packets send vs received success percentage of the last 100 packets e Pckt Send The total amount of packets sent e Pckt Recv The total amount of packets received e Bad CRC The total amount of bad CRC packets received e No Reply The total amount of requests that did not receive a reply 24 llo APPENDIX B Operating Modes Master Mode 0 Master Mode 1 Master Mode 2 Single Master A Bus Only Terminated Single Master A Bus Only Non Terminated Single Master B Bus Only Terminated Hiprom Technologies 8 8 2010 25 llo Master Mode 5 Master Mode 4 Master Mode 3 Master Mode 6 Single Master B
18. total of 4 connections from the Logix Controller regardless of the field device count Thus the input and output image of each 1788HP EN2PA R is divided into four sections A to D The first connection will have the PA Master Data added as well Below is the input image of the PA Master I PARU T I Master HT 1788HP ENZ EmmSBMeePE EGER I meses Float REAL PAROT lA Master PABusCunent D 0 Fia REAL FRAROTIA Master PABusVoltageB 21 2184 loa REAL PAROT A Master PABusCunen BA Float REAL PPAROTIA MasterExtemalVoltage 8 SATA loa REAL PAROT lA Master Temperature S Flea REAL PAROT lAMasterBussEnabled A Decma BODL PARONA Master BusBEnabled 1 Decma BODL PARONA Master BusATipped O Decima BODL PARONA Master BusBTripped 0 Decima BODL PARONA Master BusATeminated 1 Decma BODL PARONA Master BusBTeminated 1 Decma BODL PARDI lA Master NewFieldDevee ema BOL PAROllAMasterMuliMasteclve cima BODL EELPAROT IA Master Masterode A Decma SINT H PARONA Master ModuleStatus O Decima INT ELPAROT A Master ConnectionStatus 280000_0000_0000_0000_0000_0000_0000_0011 Binary DINT e Bus A B Tripped If too much current has been drawn gt 500mA on either Bus A or Bus B it will trip can the bus will no longer be functional It will then be indicated in the input image e NewFieldDevice If a new field device is found which is not in the co
19. xtended diagnostics available then this bit will be set Note that this bit can be dynamic e ParameterFault If there is a fault in the parameterization of the field device then this bit will be set e ParameterReq If the device has not been received its parameterization this bit will be set e FreezeMode If the user has enabled freeze mode in the parameterization of the field device and a global control has been sent to freeze the device PVs this bit will be set e SyncMode If the user has enabled sync mode in the parameterization of the field device and a global control has been sent to sync the device PVs this bit will be set e WatchDog If the watchdog has been enabled in the parameterization of the field device this bit will be set e PAldent This is the ident number of the specific field device e PVReal1 PVReal8 If the user has set a process variable to be a Real format the user will find the data in this section e PVStatus1 PVStatus8 If the user has set a process variable to have a Status the user will find the status value for the each PV in this section A NOTE The definition of the PV Status can be found in the user manual of the field device In general a value of below 40 indicates that the PV is bad a value of between 40 and 7F indicates that the PV value is uncertain and a value of above 30 indicates that the PV value is good A S ne pue 16 e PVinti PVInt8 If the user has set a p
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