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Hamilton Electronics EPHUM011 manuel d'utilisation

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Table des matières du manuel d’utilisation

  • Page 1

    pH ARC Sen so rs Mod bus RTU Progra mmer ’ s Manua l (EPH UM011 ) 6243 00/01 page 1 / 67 pH ARC Senso rs Modb us RTU Progra mmer ’ s Manu al Firm w are version: EPHUM011[...]

  • Page 2

    pH ARC Sen so rs Mod bus RTU Progra mmer ’ s Manua l (EPH UM011 ) 6243 00/01 page 2 / 67 Important N otice All rights res er v ed. No p art of th is docu ment may be re p roduce d, stored in a ret rieval sys tem, or trans mit ted in an y f or m without w ritten per miss ion from HAMILT ON Bonad uz AG. The conten ts o f thi s manual are s ub ject [...]

  • Page 3

    pH ARC Sen so rs Mod bus RTU Progra mmer ’ s Manua l (EPH UM011 ) 6243 00/01 page 3 / 67 Ta ble of Content 1 MODB US R TU GEN ERA L IN FOR MA T ION ............................................................................... 4 1.1 I NT RODU CTIO N ................................................................................................ [...]

  • Page 4

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 4 / 67 1 Modbus RT U general i nformat ion 1.1 Int r oducti on This docu ment describes in deta il the pH ARC Sens ors Modb us RTU i nter face. It is address ed to so f twa re programmers . The gene ral informa ti on about Modbu s command s truct ures an d it s imp[...]

  • Page 5

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 5 / 67 2 pH A RC Sensor Com mands in Modbus RT U 2.1 General In order to communicate with a pH ARC Sens or o v er Modb us RTU protocol a Modbu s m aster terminal application s o f twa re is neede d. The Modbus RTU is an open s tandard and a nu m ber o f free and co[...]

  • Page 6

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 6 / 67 Command: Operator le v el Modbu s address : 4288 Len gth: 4 Type: 3 Re ad Parameter: Operator le vel Passw ord Format: Hex decimal Value: 0x 30 0 Figure 2.2.1.4 : Exa mple to read the a ct iv e operator le vel : the act ive leve l is 0 x 30 (Spec ialist). Th[...]

  • Page 7

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 7 / 67 2.3 Configura tion of the serial RS485 Int erface Factory settings o f the RS485: Parity is n one, 1 s tart bit, 8 data bits , 2 stop bi ts (in tota l: 11 bits). 2.3.1 De vice A d dress 2.3.1.1 Rea ding and W ritin g the Device Addres s The se nsor s pecifi [...]

  • Page 8

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 8 / 67 2.3.2 Ba ud Rate 2.3.2.1 Rea ding and W ritin g the Ba ud Ra te The baud ra te can be read and w ri tt en i n reg ister 4102 . Start register N umber o f registers R eg1 / Reg2 Modbu s f unc t ion code Read access Write access 4102 2 Baud rate cod e (definit[...]

  • Page 9

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 9 / 67 2.4 Configura tion of the Anal og Interfac es 2.4.1 Availab le An a log Interfaces A pH ARC Sens or has tw o i ndividual phys i cal ana l og inter f aces t hat ha v e ident ical functiona l ities, bu t can be con f igured inde pend ently fro m each other. ?[...]

  • Page 10

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 1 0 / 67 2.4.3 De scription of the A nalog Interfaces 1 and 2 Regis ter 4352 / 4480 con tain the des cri ptions o f A O 1 / AO2 as pla i n text ASC II: Start register N umber o f registers R eg1 … Re g8 16 ASCII chara cters Modbu s f unc t ion code Read access Wr[...]

  • Page 11

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 1 1 / 67 2.4.5 Co nfiguration o f the 4-20 mA Interface Note: The configuration o f AO1 / AO2 is only effecti v e if registe r 4360 / 4488 (active ana l og interface mode) is se t to t he value 0 x 01, 0 x 02 or 0x04. 2.4.5.1 Rea ding the Av ailable Primary Me asur[...]

  • Page 12

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 1 2 / 67 2.4.5.3 Rea ding the Minimum an d Maxim u m P o ssi ble Phys ical Ou tput Current Start register N umber o f registers R eg1 / Reg2 Reg3 / Reg 4 Modbu s f unc t ion code Read access Write access 4366 4 Min phys ical outpu t current f or A O1 [mA] Max phys [...]

  • Page 13

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 1 3 / 67 2.4.5.5 Rea ding the Selecte d Physica l U nit f o r A n alog I nter face Start register N umber o f registers R eg1 / Reg2 Modbu s f unc t ion code Read access Write access 4376 2 Selected phys ical unit o f A O 1 (se e chapter 2.5.1) 3, 4 U/A/S none 4504[...]

  • Page 14

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 1 4 / 67 p H A RC se n s o r : 4 - 20 mA in te r f a ce - li n e a r -15 -10 - 5 0 5 10 15 20 25 30 35 0 4 8 12 1 6 20 2 4 Cur r e nt [ m A] tem p eratu re [°C] 1 2 3 4 5 6 7 8 9 10 11 pH T em p [° C ] p H Figure 2 . 4.5.6.3 : Exa m p le o f l inear 4-20 m A o ut[...]

  • Page 15

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 1 5 / 67 Attention: W hen ass igning m eas urem ent v alues t o 4-20 mA an alog o utput by us ing reg ister 4378 / 4506, you need to co nsider the f ollow i ng:  The PMC yo u ha v e m apped to AO1 / AO2 (regis ter 436 4 / 4492)  The phys i cal unit curren tly[...]

  • Page 16

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 1 6 / 67 2.4.5.8 Defining the Er ror and Wa rning Outp ut of the 4 -20 m A Interfac e Errors a nd w arning s can b e m appe d to the AO1 / AO2. Start register N umber o f registers R eg1 / Reg2 R eg3 / Reg4 R eg5 / Reg6 R eg7 / Reg8 Mo dbus f unc t ion code Read ac[...]

  • Page 17

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 1 7 / 67 2.4.6 Reading the In ternally Measured Output Cu rrent Reg. 441 4 / 4542 pro v i des internal para m eters o f A O 1 / AO2:  the se tpoint to w hich the curren t i s reg ulated in a c losed loop co ntro l  the electrica l current the s ens or i s mea[...]

  • Page 18

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 1 8 / 67 2.5 Measureme nt 2.5.1 De finition o f Measuremen t Ch a nnels and Physical Units The pH ARC Sens or Modbus reg ister structure all ow s the definition of 6 i nd iv idual Pr imary Meas urem ent Channe ls (PMC), and 16 individual Seco ndary Measu rement Cha[...]

  • Page 19

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 1 9 / 67 The pH ARC Sensor reg ister structure u se s the followin g physical un it s us ed f or Pr imary or Secon dary Meas urem ent Ch anne ls. Bit # Hex code Physical unit Start re gister. (8 ASC I I characters , l ength 4 reg i sters , Type 3, read for U/A/S) 0[...]

  • Page 20

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 2 0 / 67 2.5.2 Primary Measurement Channel 1 (pH) 2.5.2.1 Descr ipti on of PMC1 In register 2080, a pl a in t e x t ASCII des cription o f PMC1 i s gi v en. Start register N umber o f registers R eg1 … Re g8 16 ASCII chara cters Modbu s f unc t ion code Read acce[...]

  • Page 21

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 2 1 / 67 2.5.2.3 Rea ding the measurem ent value of PMC1 Regis ter 2090 is als o us ed to read the meas urem ent v alues of PMC1. Start reg. Nu m - ber of reg. Reg1 / Reg2 R eg3 / Reg4 R eg5 / Reg6 R eg7 / Reg8 R eg9 / Reg1 0 Modbu s f unc t ion code Read access Wr[...]

  • Page 22

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 2 2 / 67 2.5.3 Primary Measurement Channel 6 ( T empe ra ture) 2.5.3.1 Des cription of PMC6 In register 2400, a pl a in t e x t ASCII des cription o f PMC6 i s gi v en Start register N umber o f registers R eg1 … Re g8 16 ASCII chara cters Modbu s f unc t ion cod[...]

  • Page 23

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 2 3 / 67 2.5.3.3 Rea ding the measurem ent value of PMC6 Regis ter 2410 is als o us ed to read the m easu rement values of P MC6. Start reg. Nu m - ber of reg. Reg1 / Reg2 R eg3 / Reg4 R eg5 / Reg6 R eg7 / Reg8 R eg9 / Reg1 0 Modbu s f unc t ion code Read access Wr[...]

  • Page 24

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 2 4 / 67 2.5.5 Seco ndary Measurement Cha nn els 1-16 pH ARC Sen so rs do allow a ccess to s econdary meas urement v al ues (16 i n total). T he acces s to the individual SMC depend s on the op erator level. The a v a ilable SMC are de f i ned i n reg ister 2048 ac[...]

  • Page 25

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 2 5 / 67 2.5.5.2 Rea ding the measurem ent value of SMC The registers defi ned he re are us ed to read t he measu rement val ues o f ea ch SMC . Start reg. Num - ber of reg. Reg1 / Reg 2 Reg3 / Reg 4 Reg5 / Reg 6 Modbu s f unc t ion code Read access Write access Ad[...]

  • Page 26

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 2 6 / 67 2.6 Configura tion o f t he M easureme nt This chapter describes the con fi gurat ion of PMC1 and PMC6 by means o f m eas urem en t para m eters (PA). 2.6.1 Availab le Parameters In register 307 2, al l a vailable para m eters (PA ) are g iv en . Start reg[...]

  • Page 27

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 2 7 / 67 2.6.2 PA9: Moving Average The pH ARC Sens or provi des new p H readings e v ery 3 seco nds. O ne has the pos sibility t o s m oothen the pH read ing (PMC1 ) by m eans of a moving a verage a pplied to the 3-s econd s-rea dings. PA9 can be a pplied on 1 to 1[...]

  • Page 28

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 2 8 / 67 2.6.2.1 Des cription of PA9 (Moving Ave rage) In regis ter 336 0, a pl a in te x t ASCI I des cri ption o f PA9 is giv en. Start register N umber o f registers R eg1 … Re g8 16 ASCII chara cters Modbu s f unc t i on cod e Read access Write access 3360 8 [...]

  • Page 29

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 2 9 / 67 2.6.2.3 Rea ding all Values f or PA9 By reading reg i ster 33 70, the a ctive phys i cal un i t o f meas urement, the s elected value, and the mi n an d max values can be read. Start register N umber o f registers R eg1 / Reg2 R eg3 / Reg4 R eg5 / Reg6 R e[...]

  • Page 30

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 3 0 / 67 2.6.3 PA12: Moving Average R pH ARC Sen so rs allow to ha v e a s eparate moving a v erag e on se conda ry m eas urement values :  Glass res i stance  Reference res i stance The mo ving average ca n be app lied on 1 to 16 3-s m eas urement values . T[...]

  • Page 31

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 3 1 / 67 By writing to regis ter 3466, the act ive physica l unit f or PA12 can be s elected, by cho os ing one o f the phys i cal units that are de f i ned in reg ister 3464 . The value of the para m eter can be s et as w el l. Command: Mo v ing a v erage Modb us [...]

  • Page 32

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 3 2 / 67 2.7 Calibratio n 2.7.1 Availab le Cal ibration Points In register 512 0, the a v ailab le number o f Calibrat ion Points (C P) for P rimary Meas urem ent C hann el 1 (PMC1) is defi ned. 8 i nd iv idual CP are theore tically poss i ble. Start register N umb[...]

  • Page 33

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 3 3 / 67 2.7.2 De finitions of Calibration Points 2.7.2.1 Calibrati on Points 1 a nd 2 (Standard Cali bration) The limits f or the cal ibration po i nt 1 are d e fi ned in re gist er 5152 , f or ca libration po int 2 in reg i ster 51 84. Start register N umber o f [...]

  • Page 34

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 3 4 / 67 Command: R ead cal ibration s tability Modbu s address : 5128 L ength : 4 Type: 3 Read Parameter: Max drift pH [pH/min] Max drift Te m p [K/min] Format: Float Float Value: 0.1 0.5 Figure 2.7.2.1.5 : Exa m p le to read t he calibrat i on stab ility. Command[...]

  • Page 35

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 3 5 / 67 2.7.3 Ca libratio n Procedur e 2.7.3.1 Calibrati on at CP1 and CP2 (Sta ndard C a lib rat i on) The ARC Sens or f a mily has a un ique ca libration rout i ne. When in i tiating the calibrat ion, the data s et o f the sen sor i s automatical ly t raced back[...]

  • Page 36

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 3 6 / 67 Standard Calibrati on with Automatic Rec ognition of th e Standar d Prior to cal ibration, the s pecialist s elects - f or e ach s et o f calibrat ion stan dards - a list o f calibration stan dards allow ed f or au tomatic recogn ition (reg ister 9530 ). W[...]

  • Page 37

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 3 7 / 67 Per f orm the f o ll ow i ng step s to do a s tandard ca li bration at CP1 and C P2: Step1: Select the d esired set o f cal ibratio n standards (s ee chap ter 2.7.11) Step 2: Immers e the se nsor into o n e of the ca librati on sta ndards a vaila ble in th[...]

  • Page 38

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 3 8 / 67 Examples : ( De finitions o f register 5158 a nd 519 0 us ed i n thes e ex a m p l es are g iven in chapter 2.7.4.1, thos e for reg ister 487 2 in ch apter 2.8 .6) Example to ca librate at CP1 w i th auto m atic recogn i tion: Command: Make ca libration CP[...]

  • Page 39

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 3 9 / 67 Example to read the sen sor ’ s quali ty indicator: Command: Qua l ity i nd i cator Modbu s address : 4872 Len gth: 2 Type: 3 Re ad Parameter: Q uality [%] Format: Float Value: 10 0 Figure 2.7.3.1.9 : Exa m p le t o read the sen so r ’ s quali ty indic[...]

  • Page 40

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 4 0 / 67 W ha t happen s to the pH ARC Sens or ’ s calibrati on f unc t ion upon pro duct ca libration (CP6)? A product ca li brat ion adds a n off set t o the l inear ca libration funct ion de fi ned by the s tandard calibration at CP1 and CP2 . Product calibrat[...]

  • Page 41

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 4 1 / 67 The different f unct ionalities o f product ca li bration (C P6) are acce ss i ble through the f ollow i ng se nsor commands :  Initial meas uremen t  Ass i gnment  Cance l  Res t ore s tandard cali bra t ion  Res t ore prod uct calibration [...]

  • Page 42

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 4 2 / 67 2.7.3.2.2 Product calibrati o n: As signment After succes sful i n itial meas urement a correc t v alue m us t be ass igned to the init i ally stored measure m ent d ata. This is ach i eved by w ri ting the co rrect ca l ibration v a l ue to reg ister 5322[...]

  • Page 43

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 4 3 / 67 2.7.3.2.4 Product calibrati o n: Restore sta ndard calibra tion If a product ca libration i s active this produ ct calibration can be temporari ly switched off by writing t he command 0 x 03 to reg i ster 5340 . Per f orming th i s action the v a lues of t[...]

  • Page 44

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 4 4 / 67 2.7.4 Re ading the Calibration Status 2.7.4.1 Reading the Cal ibration Stat u s of CP1 and CP2 A s tandard cali bra t ion i s not a l wa ys successful. In order to anal yze w hat has gone w rong, tw o different calibration s tatus regis ters can b e read: [...]

  • Page 45

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 4 5 / 67 Command: Ca libration s tatus CP1 Modb us add ress: 5158 Len gth: 6 Type: 3 Re ad Parameter: Sta tus Unit Value Format: Hex Hex Float Value: 0x 0000 0080 0x00 0010 00 4.01 Figure 2.7.4.1 .3: Example to read the calibration s tatus o f CP1 after calibrati o[...]

  • Page 46

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 4 6 / 67 2.7.4.2.1 Product calibrati on: Initial meas urement Calibration s tatus a f t er in i tial meas urem en t command u nder cond itions ou tside the valid calibrat ion range f or CP6 ( de f ined in regis ter 5312): Command: Ca libration s tatus CP6 Modb us a[...]

  • Page 47

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 4 7 / 67 The here pe rformed as signment w as success f ul . The se ns or is running us i ng a v alid prod uct calibration . 2.7.4.2.3 Product calibrati o n: Cancel Calibration s tatus a f t er ca ncell ing an acti v e p roduct ca libration: Command: Ca libration s[...]

  • Page 48

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 4 8 / 67 2.7.5 Currently active Calibration Parameters par t 1 In registers 5164 (CP1), 5196 (C P2) a nd 532 4 (CP6) th e currently act iv e cal ibration para m eters pa rt 1 are s tored. Thes e registers contain t he v alues f or te m perature, nu m ber of calibra[...]

  • Page 49

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 4 9 / 67 2.7.7 Currently active Calibration Parameters par t 3 In register 552 0, 5528 an d 5560 the pH value of the us ed calibrat i on stan dards , the electrical potent i al of the pH se ns or and the te m peratu re upon ca l ibration are stored. Start register [...]

  • Page 50

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 5 0 / 67 2.7.9 Sp ecial Commands for Calibration with VISI C AL The VI SICAL cal ibration device allows calibration of pH ARC Sens ors at CP1 or CP2. The pH ARC Sens or ’ s as sociated calibrat ion para m eters f or C P1 an d CP2 are those p redefined a nd sto re[...]

  • Page 51

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 5 1 / 67 2.7.10 Calibrat ion Standards 2.7.10.1 A vailable Sets of Calibrati on Standards pH ARC Sen so rs can s t ore and o perate s ix different s ets of calibrat i on stan dards e ach ha v ing m ax 12 calibration s tandards . Bef ore ca libration the op erator h[...]

  • Page 52

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 5 2 / 67 2.7.10.2 Definitions for Individua l Sets of Calibra tion Standards Once the opera tor ha s s el ected a s et of calibration s t anda rds (reg ister 9474 ) the register 9504 a nd f o llowing gi v e a ll informa ti on o n the se lected set o f calibration s[...]

  • Page 53

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 5 3 / 67 Regis ter 9528 de fi nes f or the s el ected s et of calibrat i on stan dards:  the a v ailable ca libration s t anda rds for manu al selection of the pH va lue  the a v ailable ca libration s tandard s for auto m atic recogn i tion of the pH v alue [...]

  • Page 54

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 5 4 / 67 By means of register 95 30, the s pecialist can de fi ne f or e ach a v ailable calibrat ion stand ard if the sp ecifi c stan dard is av ai lable. Start register N umber o f registers R eg1 / Reg2 (Bit, see figure 2.7.10.2 .8) Modbu s f unc t ion code Read[...]

  • Page 55

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 5 5 / 67 Manufactu rer A v a il abil it y f or manual select ion (le ft) and automatic recogni tion (right) HA MI LTO N MERCK TITRISO L DIN 1926 7 NIST S T AND A RD[...]

  • Page 56

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 5 6 / 67 Manufactu rer A v a il abil it y f or manual select ion (le ft) and automatic recogni tion (right) METTLER TOLEDO RA DIO METER Figure 2.7.10 .2.13: De f ault de fi n itions in reg i ster 952 8 for al l 6 se ts o f ca libration s tandard s av ailable in pH [...]

  • Page 57

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 5 7 / 67 2.8 Sensor Stat us 2.8.1 T emperature Ranges In registers 4608, 4612 a nd 461 6 three differen t te m per ature ran ges a re defi ned:  Operation – in th is range the s ens or w il l wo rk properly (cu rrent output, Mo dbus communicat ion), except the[...]

  • Page 58

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 5 8 / 67 2.8.2 O perating Hours and C ounters In register 467 6 are g iv en:  total ope rating hours  opera ting hours a bo v e ma x meas urement te mperature (s ee chapter 2.8.1)  the ope rating hours a bo v e ma x operat i ng t e m pera ture (s ee chapte[...]

  • Page 59

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 5 9 / 67 2.8.3 Warnings A “ W arn i ng ” is a not ifi cation mess age w hich still allow s f urthe r function i ng o f t he s ystem. This mes sa ge alerts the ope rator o f a poss i ble problem that could lead to u ncerta in results. 2.8.3.1 Currently A ctive W[...]

  • Page 60

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 6 0 / 67 2.8.4 Errors An “ Error ” mess age i ndicates a serious pro blem of the senso r w hich does no t al low further prop er f unc t ioning o f the sen so r. T his prob lem must be s olved. 2.8.4.1 Currently A ctive Errors The current l y act ive errors are[...]

  • Page 61

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 6 1 / 67 2.8.4.3 Definition of Errors Bit # Hex Description not a v a il able 5 0x 00000 20 G lass res i stan ce t oo high 6 0x 00000 40 G lass res i stan ce t oo l ow 7 0x 00000 80 Ref erence e l ectrode res i stance too h igh 8 0x 00001 00 Ref erence e l ectrode [...]

  • Page 62

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 6 2 / 67 2.8.5 Re ading Definition of SI P and CI P pH ARC Senso r are counting spe cial cleaning e v ents s uch as sterilizations o r cl ean i ng cycles by means o f track i ng typica l tempera ture profiles (s ee chapter 2.8.2). Regis ter 4988 defines a typ ical [...]

  • Page 63

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 6 3 / 67 Command: SI P definit ion Modbus ad dress: 4988 Len gth: 8 Type: 16 Write Parameter: T mi n [°C] T m ax [° C ] Tim e min [min] E m pty Format: F loat Fl oat Float Float Value: 12 0 130 30 0 Figure 2.8 .5.3: Example to w rit e the SIP defin itions. Comman[...]

  • Page 64

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 6 4 / 67 2.9 Sensor I dentifi catio n and I nformat ion 2.9.1 G eneral Information General in f or m at ion abou t t he s ens or i s a v ailable as sh ow n i n the fi gure below . Start register N umber o f registers R eg1 … Re g8 (16 ASCII characters ) Example o[...]

  • Page 65

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 6 5 / 67 Command: Ser i al nu m ber Mod bus ad dress: 1312 Le ngth: 8 Type : 3 Read Parameter: Te x t Format: Chara cter Value: 00 0100 1 Figure 2.9.2.2: E x a m p le to read reg ister 1312 . 2.9.3 F ree User Memory S pac e Thes e registers can be us ed t o store a[...]

  • Page 66

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 6 6 / 67 Command: Info use r Modbu s address : 1568 Len gth: 8 Type: 16 Write Parameter: Te x t Format: Chara cter Value: Hello Worl d Figure 2.9.3.2: E x a m p le to w rit e 16 ASCI I characters to register 1568 w ith operator A or S. Command: Info use r Modbu s a[...]

  • Page 67

    pH ARC Sen so rs Mod bus RTU Progra mm er ’ s Manua l (EPH UM011 ) 6243 00/01 page 6 7 / 67 HAMILTON Bon aduz A G Via Crusch 8 CH-74 02 Bona duz Sw itzerl and Tel. +41 81 6 60 60 60 Fax +41 81 6 60 60 70 contact@ha mil ton.ch 05 May 201 0 www .ham iltonco m pany.co m Manua l P/N: 62 4300 /01[...]