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Hamilton Electronics EPHUM011 User's Manual

1. Command SIP definition Modbus address 4988 Length 8 Type 16 Write Parameter T min C T max C Time min min Empty Format Float Float Float Float Value 120 130 30 0 Figure 2 8 5 3 Example to write the SIP definitions Command SIP definition Modbus address 4988 Length 8 Type 3 Read Parameter T min C T max C Time min min Empty Format Float Float Float Float Value 120 130 30 0 Figure 2 8 5 4 Example to read the SIP definitions Command CIP definition Modbus address 4996 Length 8 Type 16 Write Parameter T min C T max C Time min min Empty Format Float Float Float Float Value 80 100 30 0 Figure 2 8 5 5 Example to write the CIP definitions Command CIP definition Modbus address 4996 Length 8 Type 3 Read Parameter T min C T max C Time min min Empty Format Float Float Float Float Value 80 100 30 0 Figure 2 8 5 6 Example to read the CIP definitions 2 8 6 Reading the Sensor s Quality Indicator In register 4872 the sensor s quality indicator 0 100 is given Start Number of Reg1 Reg2 Modbus Read Write register registers Float function access access code 4872 2 Quality 3 4 U A S none Figure 2 8 6 1 Definition of register 4872 Command Quality indicator Modbus address 4872 Length 2 l Type 3 Read none Parameter ern Figure 2 8 6 2 Example to read the se
2. Start Number Regi Regs Reg5 Reg7 Modbus Read Write register of Reg2 Reg4 Reg6 Reg8 function access access registers Float Float Float Float code 9536 8 Calibr Tolerance Nominal Tolerance 3 4 U A S none 9552 standard of nominal electrical of electrical nominal value potential potential value pH mV mV pH Figure 2 7 10 2 4 Definition for registers 9536 until 9720 Command Read standard 4 Modbus address 9584 Length 8 Type 3 Read Parameter Nominal value Tolerance Nominal electrical Tolerance of pH pH potential lectrical potential mV Figure 2 7 10 2 5 Example to read the values for the calibration standard 4 624300 01 page 52 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 Register 9528 defines for the selected set of calibration standards e the available calibration standards for manual selection of the pH value e the available calibration standards for automatic recognition of the pH value Start Number of Reg1 Reg2 Modbus Read Write register registers Bit see figure 2 7 10 2 8 function code access access 9528 2 Availability of the 12 cal standards 3 4 U A S none Figure 2 7 10 2 6 Definition of register 9528 Command Available standards Modbus address 9528 Length 2 Read l Type 3 P dard field
3. Start Number of Regi Reg8 Modbus Read Write register registers 16 ASCII characters function code access access 2400 8 Description of PMC6 3 4 U A S none Figure 2 5 3 1 1 Definition of register 2400 Command PMCE text Modbus address 2400 Length 8 Type 3 Read Parameter Text Format Character Value T Figure 2 5 3 1 2 Example to read the description It is T Temperature 2 5 3 2 Selecting the Physical Unit for PMC6 In register 2408 the available physical units of PMC6 are defined Start Number of Reg1 Reg2 Modbus Read Write register registers bitwise defined function code access access 2408 2 Available physical units of PMC6 3 4 U A S none Figure 2 5 3 2 1 Definition of register 2408 Command PMC6 available units Modbus address 2408 Length 2 Type 3 Read Parameter Units Format Hex Value 0x06 Figure 2 5 3 2 2 Example to read the available physical unit for PMC6 K 0x02 C 0x04 total 0x06 In register 2410 the active physical unit of PMC6 can be selected by choosing one of the physical units that are defined in register 2408 Start Number of Reg1 Reg2 Modbus Read Write register registers bitwise defined function code access access 2410 2 Selected active physical unit of PMC6 16 none U A S Figure 2
4. Figure 2 7 3 2 3 1 Example to cancel an active product calibration or an initial measurement Writing the command 0x02 cancel to register 5340 Performing this action the product calibration or any initial measurements are canceled The values of the prior product calibration are removed from the sensor s memory From now on the sensor is measuring using its prior CP1 CP2 standard calibration The sensor s calibration status register 5318 will be reading 0x00 again see figure 2 7 4 1 1 624300 01 page 42 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 7 3 2 4 Product calibration Restore standard calibration If a product calibration is active this product calibration can be temporarily switched off by writing the command 0x03 to register 5340 Performing this action the values of the product calibration remain stored in the sensor s memory Command CP6 Restore standard Modbus address 5340 Length 2 Type 16 Write Parameter Command Format Hex Value 0x03 Figure 2 7 3 2 4 1 Example to restore a standard calibration from an active product calibration Writing command 0x03 restore standard calibration to register 5340 From now on the sensor is measuring using its prior CP1 CP2 standard calibration The sensor s calibration status register 5318 will be reading CP6 assigned 0x10000000 meaning that a valid assignment for a
5. Figure 2 5 5 2 3 Example to read register 2472 Physical unit is MOhm 0x8000 the measurement value of SMC1 is 247 66 MOhm standard deviation of SMC1 is 0 02 MOhm 624300 01 page 25 67 HAMILTON 2 6 Configuration of the Measurement pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 This chapter describes the configuration of PMC1 and PMC6 by means of measurement parameters PA 2 6 1 Available Parameters In register 3072 all available parameters PA are given Start Number of Reg1 Reg2 Modbus Read Write register registers bitwise defined function code access access 3072 2 Available parameters see figure 2 6 1 2 3 4 U A S none Figure 2 6 1 1 Definition of register 3072 Bit Hex value Description Definition in pH ARC Sensors 0 LSB 0x0001 PA1 not available not available 7 0x0080 PA8 not available 8 0x0100 PA9 Moving average 9 0x0200 PA10 not available 10 0x0400 PA11 not available 11 0x0800 PA12 Moving average R not available 15 MSB 0x8000 PA16 not available Figure 2 6 1 2 Bitwise definition of parameters PA1 to PA16 valid for pH ARC Sensors Command Available parameters Modbus address 3072 Length 2 Type 3 Read Parameter Measurement parameters Format Hex Value 0x0900 Figure 2 6 1 3 Example to read the available parameters The value 0x0900 corresponds to 0x
6. Value i OxOFFFOFFF Figure 2 7 10 2 7 Example to read the information of register 9528 For the definition of the bits see Figure 2 7 10 2 8 The value OxOFFFOFFF says that for the selected set of calibration standards e all 12 calibration standards are available for manual calibration e all 12 calibration standards are available for automatic recognition Bit Hex code Index of Calibration Calibration type Standard within the selected set 0 LSB 0x00000001 1 manual selection 1 0x00000002 2 manual selection 2 0x00000004 3 manual selection 3 0x00000008 4 manual selection 4 0x00000010 5 manual selection 5 0x00000020 6 manual selection 6 0x00000040 7 manual selection 7 0x00000080 8 manual selection 8 0x00000100 9 manual selection 9 0x00000200 10 manual selection 10 0x00000400 11 manual selection 11 0x00000800 12 manual selection 12 15 not available 16 0x00010000 1 automatic recognition 17 0x00020000 2 automatic recognition 18 0x00040000 3 automatic recognition 19 0x00080000 4 automatic recognition 20 0x00100000 5 automatic recognition 21 0x00200000 6 automatic recognition 22 0x00400000 7 automatic recognition 23 0x00800000 8 automatic recognition 24 0x01000000 9 automatic recognition 25 0x02000000 10 automatic recognition 26 0x04000000 11 automatic recognition 27 0x08000000
7. 3 4 U A S none 1640 8 Free user space others FREE_USERSPACE 3 4 U A S none 1648 8 Free user space others FREE_USERSPACE 3 4 U A S none 1656 8 Free user space others FREE_USERSPACE 3 4 U A S none 1664 8 Free user space others FREE_USERSPACE 3 4 U A S none 1672 8 Free user space others FREE_USERSPACE 3 4 U A S none 1680 8 Free user space others FREE_USERSPACE 3 4 U A S none 1688 8 Free user space others FREE_USERSPACE 3 4 U A S none 1696 8 Free user space others FREE_USERSPACE 3 4 U A S none 1704 8 Free user space others FREE_USERSPACE 3 4 U A S none 1712 8 Free user space others FREE_USERSPACE 3 4 U A S none 1720 8 Free user space others FREE_USERSPACE 3 4 U A S none 1728 8 Free user space others FREE_USERSPACE 3 4 U A S none 1736 8 Free user space others FREE_USERSPACE 3 4 U A S none 1744 8 Free user space others FREE_USERSPACE 3 4 U A S none 1752 8 Free user space others FREE_USERSPACE 3 4 U A S none Figure 2 9 3 1 Definition of registers containing user information An important register is 1600 as it is the description of the measuring point The information of this register is displayed on the ARC View Handheld in order to identify individual sensors A Attention The Free User Memory Space is located in a memory which allows in total max 10 000 write operations 624300 01 page 65 67 HAMILTON pH ARC Sensors
8. 624300 01 page 6 67 HAMILTON 2 3 Configuration of the serial RS485 Interface pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 Factory settings of the RS485 Parity is none 1 start bit 8 data bits 2 stop bits in total 11 bits 2 3 1 Device Address 2 3 1 1 Reading and Writing the Device Address The sensor specific device address can be read and written in register 4096 Start Number of Regi Reg2 Modbus Read Write register registers function code access access 4096 2 device address 3 4 16 U A S S Figure 2 3 1 1 1 Definition of register 4096 Command Com address Modbus address 4096 Length 2 Type 3 Read Parameter Modbus address Format Decimal Value 1 Figure 2 3 1 1 2 Example to read the device address The device address can be set by S Specialist default value is 1 Command Com address Modbus address 4096 Length 2 Type 16 Write Parameter Modbus address Format Decimal Value 3 Figure 2 3 1 1 3 Example to set the device address to 3 2 3 1 2 Reading the Device Address Limits The device address limits can be read in register 4098 Start Number of Regi Reg2 Regs Reg4 Modbus Read Write register registers function code access access 4098 4 Min device Max device 3 4 U A S none address address Figure 2 3 1 2 1 Definit
9. AO2 register 4364 4492 e The physical unit currently in use for the selected PMC register 2090 for PMC1 pH and register 2410 for PMC6 temperature Therefore when the operator redefines one of the register 4364 4492 2090 2410 the definitions of the register 4378 4506 should be reviewed If not the current output at the 4 20 mA interfaces may be wrong Note The physical unit of the analog output corresponds always to the unit that is set for the selected PMC register 2090 for PMC1 or register 2410 for PMC6 Accordingly not only the pH value is selectable at the 4 20 mA interface but also mV values degrees centigrade or Kelvin Example Register 4364 is set to 1 PMC1 is mapped to AO1 Register 2090 is set to 0x1000 the unit pH is assigned to PMC1 Register 4378 is set to 2 and 10 4 mA pH 2 20 mA pH 10 The sensor reads currently pH 4 the output at the 4 20 mA is accordingly 8 mA The operator now re assigns register 2090 to the value of 0x200000 unit mV but does not modify all other registers The sensor is still at pH 4 and reads now 170 mV At the analog output as 20 mA is programmed to a value of 10 by register 4378 the current will go to the maximum value of 20 mA This will generate an interface warning 4 20 mA current set point not met 2 4 5 7 Defining a Constant Current Output for Testing Note For constant current output the
10. HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual Firmware version EPHUMO11 624300 01 page 1 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 Important Notice All rights reserved No part of this document may be reproduced stored in a retrieval system or transmitted in any form without written permission from HAMILTON Bonaduz AG The contents of this manual are subject to change without notice Technical changes reserved All efforts have been made to ensure the accuracy of the contents of this manual However should any errors be detected HAMILTON Bonaduz AG would greatly appreciate being informed of them The above notwithstanding HAMILTON Bonaduz AG can assume no responsibility for any errors in this manual or their consequences Copyright 2010 HAMILTON Bonaduz AG Switzerland Rev Revision Date Author Change Description 01 22 04 2010 Ph Arquint Initial Version 01 for EPHUMO1 1 R Dietrich D Sch nfuss 624300 01 page 2 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 Table of Content 1 MODBUS RTU GENERAL INFORMATION iii 4 1 1 INTRODUCTION nat een are Penner a 4 2 PH ARC SENSOR COMMANDS IN MODBUS RTU uuussu2u22200000nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 5 2 1 GENE A octet aga at ened a en aan een En I 5 2 2 OPERATOR LEVELS AND PASSWORDS 2uusnsennnnsnsnnnn
11. Write register registers Reg2 Reg4 Reg6 Reg8 function access access code 4736 8 Active Active Active Active 3 4 U A S none warning warning warning warning measure calibration interface hardware ment bitwise bitwise bitwise bitwise defined defined defined defined Figure 2 8 3 1 1 Definition of register 4736 see chapter 2 8 3 3 Command Active warning Modbus address 4736 Length 8 Type 3 Read Parameter W Measurement W Calibration W Interface W Hardware Format Hex Hex Hex Hex Value 0x00 0x00 0x00 0x00 Figure 2 8 3 1 2 Example to read the currently active warnings 2 8 3 2 History of Warnings The history of warnings is not implemented in pH ARC Sensors 2 8 3 3 Definition of Warnings Bit Hex Description not available Figure 2 8 3 3 1 Definition of warnings measurement None is defined Bit Hex Description 0 LSB 0x0001 PMC1 pH calibration recommended 1 0x0002 PMC1 pH last calibration not successful Figure 2 8 3 3 2 Definition of warnings calibration Bit Hex Description not available Figure 2 8 3 3 3 Definition of warnings interface None is defined Bit Hex Description not available Figure 2 8 3 3 4 Definition of warnings hardware None is defined 624300 01 page 59 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 8 4 Errors An
12. 01 page 30 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 By writing to register 3466 the active physical unit for PA12 can be selected by choosing one of the physical units that are defined in register 3464 The value of the parameter can be set as well Command Moving average Modbus address 3466 Length 4 Type 16 Write Parameter Unit Value Format Hex Decimal Value 0x01 7 Figure 2 6 3 2 4 Example to set the physical unit of PA12 to none 0x01 and the value of the moving average R to 7 2 6 3 3 Reading all Values for PA12 By reading register 3466 the active physical unit of measurement the selected value and the min and max values can be read Start Number of Reg1 Regs Reg5 Reg7 Modbus Read Write register registers Reg2 Reg4 Reg6 Reg8 function access access code 3466 8 Physical Current Min Max 3 4 U A S none unit value value value Figure 2 6 3 3 1 Definition of register 3466 Command Moving average Modbus address 3466 Length 8 Type 3 Read Parameter Unit Value Min value Max value Format Hex Decimal Decimal Decimal Value 0x01 7 1 16 Figure 2 6 3 3 2 Example to read PA12 The physical unit is 0x01 none the value is 7 and the limits are 1 to 16 624300 01 page 31 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manua
13. 2 1 Definition of register 5318 for CP6 For examples see following chapters 624300 01 page 45 67 HAMILTON 2 7 4 2 1 Product calibration Initial measurement pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 Calibration status after initial measurement command under conditions outside the valid calibration range for CP6 defined in register 5312 Command Calibration status CP6 Modbus address 5318 Length 6 Type 3 Read Parameter Status Unit Value Format Hex Hex Float Value 0x01000000 0x00001000 4 01 Figure 2 7 4 2 1 1 Example to read the calibration status of CP6 after having performed an initial measurement at CP6 under measurement conditions outside the calibration range for CP6 The status says CP6 out of calibration range 0x01000000 The last successful calibration has been performed at pH 4 01 The initial measurement in this case was not successful The sensor is still running on its prior standard calibration Calibration status after successful initial measurement Command Calibration status CP6 Modbus address 5318 Length 6 Type 3 Read Parameter Status Unit Value Format Hex Hex Float Value 0x08000000 0x00001000 4 01 Figure 2 7 4 2 1 2 Example to read the calibration status of CP6 after having performed an initial measurement at CP6 under correct measurement conditions The status says CP6 initial measure
14. 27 0x08000000 CPE initial measurement 28 0x10000000 CP6 assigned not available 30 0x40000000 CP2 incorrect measurement unit 31 0x80000000 CP1 incorrect measurement unit Figure 2 7 4 1 1 Definition of the status for register 5158 5190 and 5318 see Figure 2 7 4 1 2 and 2 7 4 2 1 Start Number of Regi Reg2 Reg3 Reg4 Reg5 Reg6 Modbus Read Write register registers function access access code 5158 6 Status CP1 Physical unit of pH value of the 3 4 U A S none see figure the last last successful 2 7 4 1 1 successful calibration CP1 calibration CP1 always pH 5190 6 Status CP2 Physical unit of pH value of the 3 4 U A S none see figure the last last successful 2 7 4 1 1 successful calibration CP2 calibration CP2 always pH Figure 2 7 4 1 2 Definition of register 5158 for CP1 and register 5190 for CP2 624300 01 page 44 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 Modbus address i Unit Command Calibration status CP1 5158 Length 6 Parameter Status Type 3 0x00000080 0x00001000 Figure 27413 Example to read the calibration status of CPI after calibration CP1 at 0 auto The status message is CP1 pH reading during calibration is not stable 0x00000080 The physical unit of the last successful calibration is pH 0x00001000 and the last successful calibration has been performed
15. 4504 and in 2090 2410 Note Mid current must always be defined However in linear output mode the mid current value has no physical meaning and will not affect the 4 20 mA output 624300 01 page 13 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 pH ARC sensor 4 20mA interface linear 35 11 30 10 8 Temp C 20 o 15 4 7 e 5 I 5 10 6 Ss 2 5 5 0 r 4 0 20 24 5 4 3 10 4 2 15 1 Current mA Figure 2 4 5 6 3 Example of linear 4 20 mA output characteristics for pH or temperature Current pH Temperature 4 mA 2 10 C 20 mA 9 30 C pH ARC sensor 4 20mA interface bilinear 35 11 30 10 25 N oO B Temp C _ ol pH oOo temperature C S oO _ D N oO N gt 10 N wo gt ol O N 00 Co pH 15 _ Current mA Figure 2 4 5 6 4 Example of bilinear 4 20 mA output characteristics for pH or temperature Current pH Temperature 4mA 2 10 C 12 mA 9 20 C 20 mA 10 30 C 624300 01 page 14 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 A Attention When assigning measurement values to 4 20 mA analog output by using register 4378 4506 you need to consider the following e The PMC you have mapped to AO1
16. 5 3 2 3 Definition of register 2410 Only one bit can be set Command PMCE set unit Modbus address 2410 Length 2 Type 16 Write Parameter Unit Format Hex Value 0x04 Figure 2 5 3 2 4 Example to set the physical unit of PMC6 to C 0x04 A Attention Changing the physical unit has also an influence on the output of AO1 AO2 as the same physical unit is active for the analog outputs All limits of the 4 20 mA analog output have to be redefined after changing the physical unit 624300 01 page 22 67 HAMILTON 2 5 3 3 Reading the measurement value of PMC6 pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 Register 2410 is also used to read the measurement values of PMC6 Start Num Regi Regs Reg5 Reg7 Reg9 Modbus Read Write reg ber of Reg2 Reg4 Reg6 Reg8 Reg10 function access access reg code 2410 10 Selected Measure Measure Min Max 3 4 U A S none physical ment ment allowed allowed unit value of status value value PMC6 Figure 2 5 3 3 1 Definition of register 2410 Measurement value of PMC6 Value is always in the physical unit defined in register 2410 For definition of the status see chapter 2 5 4 All bits set to zero means no problem Command PMC6 read Modbus address 2410 Length 10 Type 3 Read Parameter Unit Value Status Min limit Max limit Format Hex Float Hex Flo
17. Command Moving average av units Modbus address 3368 Length 2 Type 3 Read Parameter Units Format Hex Value 0x01 Figure 2 6 2 2 2 Example to read the available physical units for PA9 The only one available here is none 0x01 For the definition of the physical units see chapter 2 5 1 Start Number of Regi Reg2 Regs Reg4 Modbus Read Write register registers bitwise defined function code access access 3370 4 Select physical unit Value for PA9 16 none S for PA9 1 16 default 2 Figure 2 6 2 2 3 Definition of register 3370 Only one bit for the physical unit can be set PAY can be set to the value 1 16 A value of 1 does not influence the response time of the sensor a value of 16 increases the response time of the sensor to 48 s By writing to register 3370 the active physical unit for PAY can be selected by choosing one of the physical units that are defined in register 3368 The value of the parameter can be set as well Command Moving average Modbus address 3370 Length 4 Type 16 Write Parameter Unit Value Format Hex Decimal Value 0x01 12 Figure 2 6 2 2 4 Example to set the physical unit of PA9 to none 0x01 and the value of the moving average to 12 624300 01 page 28 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 6 2 3 Reading all Values for PA9 By reading
18. Modbus RTU Programmer s Manual EPHUMO11 Command Info user Modbus address 1568 Length 8 Type 16 Write Figure 2 9 3 2 Example to write 16 ASCII characters to register 1568 with operator AorS Command Info user Modbus address 1568 Length 8 Type 3 Read Parameter Text Value Hello World Figure 2 9 3 3 Example to read the register 1568 written in figure 2 9 1 6 2 10 System Commands 2 10 1 Recall Sensor s Factory Settings Using register 8192 you can recall the sensor manufacturer values interfaces calibration data and passwords except the SIP and CIP data which remain unchanged By sending the recall value 732255 all configuration values will be set to default Start Number of Reg1 Reg2 Modbus Read Write register registers function code access access 8192 2 Recall by value 732255 16 none S Figure 2 10 1 1 Definition of register 8192 Command Recall Modbus address 8192 Length 2 Type 16 Write Parameter Recall Format Decimal Value 732255 Figure 2 10 1 2 Example to write the restore command 3 Abbreviations AO Analog Output Interface CP Calibration Point ECS Electrochemical Sensor Interface PMC Primary Measurement Channel SMC Secondary Measurement Channel 624300 01 page 66 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 HAMILTON HAMILTON Bon
19. Sensors Modbus RTU Programmer s Manual EPHUMO11 Manufacturer Availability for manual selection left and automatic recognition right HAMILTON lt lt Standard 2 manual cali 2 pH xI Standard 3 manual cali 3 06 pH xI Standard 4 manual cali 4 01 pH xI Standard 5 manual cali 5 pH xI Standard 6 manual cali 6 pH xI Standard 7 manual cali 7 pH kal Standard 8 manual cali 8 pH xI Standard 9 manual cali 9 21 pH lt lt Standard 11 manual cali 11 pH xI Standard 12 manual cali 12 pH Standard 10 manual cali 10 01 pH xI Standard 1 auto cali 1 09 pH Standard 2 auto cali 2 pH Standard 3 auto cali 3 06 pH Standard 4 auto cali 4 01 pH Standard 5 auto cali 5 pH Standard 6 auto cali 6 pH Standard 7 auto cali 7 pH Standard 8 auto cali 8 pH Standard 9 auto cali 9 21 pH IV Standard 10 auto cali 10 01 pH V Standard 11 auto cali 11 pH V Standard 12 auto cali 12 pH lt q lt lt lt lt lt 4 MERCK TITRISOL V Standard 2 manual cali 2 pH V Standard 3 manual cali 3 pH JV Standard 4 manual cali 4 pH V Standard 5 manual cali 5 pH V Standard 6 manual cali 6 pH V Standard 7 manual cali 7 pH J Standard 8 manual cali 8 pH JV Standard 9 manual cali 9 pH J Standard 10 manual cali 10 pH IV Standard 11 manual cali 11 pH J Standard 12 manual cali 12 pH IV Standard 1 auto cali 1 pH IV St
20. U The active operator level can be read and written in register 4288 Start Number of Regi Reg2 Regs Reg4 Modbus Read Write register registers function code access access 4288 4 Operator Level Password 3 4 16 U A S U A S Figure 2 2 1 2 Definition of register 4288 Command Active operator level Modbus address 4288 Length 4 Type 3 Read Parameter Operator level Password Format hex decimal Value 0x03 0 Figure 2 2 1 3 Example to read the active operator level function code 3 start register address 4288 number of registers 4 The active operator level is 0x03 User The sensor does not report the password The value 0 is returned instead 624300 01 page 5 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 Command Operator level Modbus address 4288 Length 4 Type 3 Read Parameter Operator level Password Format Hex decimal Value 0x30 0 Figure 2 2 1 4 Example to read the active operator level the active level is 0x30 Specialist The sensor does not report the password The value 0 is returned instead Command Operator level Modbus address 4288 Length 4 Type 16 Write Parameter Operator level Password Format Hex decimal Value 0x03 0 Figure 2 2 1 5 Example to set the operator level to 0x03 U
21. actual value of the calibration solution which may deviate from the nominal value is not taken into account and cannot be set by the operator Standard Calibration with Manual Selection of the Calibration Standard If the operator knows in what calibration standard the sensor is immersed he can initiate the calibration procedure by means of setting the pH value to the actual value of the calibration standard The sensor now screens the list of calibration standards that are allowed for manual selection register 9530 If the pH value entered by the operator fits in the allowed pH range of one of the allowed calibration standards the entered pH value is assigned to the currently measured electrical potential The temperature dependency of the calibration standard is considered during the assignment If the sensor does not find any corresponding calibration standard the bit representing the corresponding status no matching calibration standard is set in the calibration status register Note using manual selection only the actual pH value of the calibration standard can be set However the actual value must be within the given tolerance of the standard in use 624300 01 page 36 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 Perform the following steps to do a standard calibration at CP1 and CP2 Step1 Select the desired set of calibration standards see chapter 2 7 11 Step 2 Immerse the sensor
22. calibration sets Set 1 0x00000001 set 2 0x00000002 set 3 0x00000004 set 4 0x00000008 set 5 0x00000010 set 6 0x00000020 in total Ox0000003F In register 9474 the selected set of calibration standards is defined Start Number of Regi Reg2 Modbus Read Write register registers Bit see Figure 2 7 10 1 2 function code access access 9474 2 Selected set of calibration standard 3 4 U A S S Figure 2 7 10 1 4 Definition of register 9474 Only one bit can be set Command Selected set of cal stand Modbus address 9474 Length 2 Type 3 Read _Parameter Calibration set 3 0x00000001 i Figure 2 7 10 1 5 Example to raed the selected set of Saliran standards Set 1 HAMILTON 0x00000001 is active Command Select set of cal stand Modbus address 9474 Length 2 Type 16 Write Parameter Calibration set Figure 2 7 10 1 6 Example to set the calibration standard set to DIN 19267 0x04 624300 01 page 51 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 7 10 2 Definitions for Individual Sets of Calibration Standards Once the operator has selected a set of calibration standards register 9474 the register 9504 and following give all information on the selected set of calibration standards Start Number of Reg1 Reg8 Modbus Read Write register registers 16 ASCII characters
23. function code access access 9504 8 Manufacturer of the selected set 3 4 U A S none 9512 8 Info 1 of the selected set 3 4 U A S none 9520 8 Info 2 of the selected set 3 4 U A S none Figure 2 7 10 2 1 Definition of registers 9504 to 9520 Modbus address 9504 Length 8___Type 3 Read Figure 2710 22 Example to read the description in this case the set 0x01 is selected Within one set of calibration standards a maximum of 12 calibration standards are available In the following registers the details of each calibration standard is given Start register Description 9536 Nominal value and tolerance of calibration standard 1 9552 Nominal value and tolerance of calibration standard 2 9568 Nominal value and tolerance of calibration standard 3 9584 Nominal value and tolerance of calibration standard 4 9600 Nominal value and tolerance of calibration standard 5 9616 Nominal value and tolerance of calibration standard 6 9632 Nominal value and tolerance of calibration standard 7 9648 Nominal value and tolerance of calibration standard 8 9664 Nominal value and tolerance of calibration standard 9 9680 Nominal value and tolerance of calibration standard 10 9696 Nominal value and tolerance of calibration standard 11 9712 Nominal value and tolerance of calibration standard 12 Figure 2 7 10 2 3 Definition for the register range from 9536 until 9720
24. manual cali 8 pH I Standard 8 auto cali 8 pH IV Standard 9 manual cali 9 21 pH IV Standard 9 auto cali 9 21 pH IV Standard 9 manual cali 9 21 pH Standard 9 auto cali 9 21 pH IV Standard 10 manual cali 10 01 pH IV Standard 10 auto cali 10 01 pH IV Standard 10 manual cali 10 01 pH IV Standard 10 auto cali 10 01 pH IV Standard 11 manual cali 11 pH IV Standard 11 auto cali 11 pH IV Standard 11 manual cali 11 pH I Standard 11 auto cali 11 pH IV Standard 12 manual cali 12 pH IV Standard 12 auto cali 12 pH IV Standard 12 manual cali 12 pH Standard 12 auto cali 12 pH x e Figure 2 7 10 2 12 Illustration from the ARC Sensor Configurator software tool for registers 9528 and 9530 For this example the HAMILTON set of calibration standard is selected On the left half of the figure the availability of the calibration standards 1 12 is shown as defined in register 9528 In the left column the availiability for manual calibration is shown all standards In the right column the availability for automatic recognition is given all standards as well On the right half of the figure the individual selection defined by the specialist is shown as read from register 9530 In the left column the selection for manual selection is shown all standards In the right column the selection for automatic recognition is given calibration standards 4 7 and 10 624300 01 page 54 67 HAMILTON pH ARC
25. measurement at CP6 and a valid assignment to pH 4 5 The status says CP6 active 0x04000000 and CP6 assigned 0x10000000 The last successful calibration corresponding to the here performed assignment has been performed at pH 4 5 624300 01 page 46 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 The here performed assignment was successful The sensor is running using a valid product calibration 2 7 4 2 3 Product calibration Cancel Calibration status after cancelling an active product calibration Command Calibration status CP6 Modbus address 5318 Length 6 Type 3 Read Parameter Status Unit Value Format Hex Hex Float Value 0x00000000 0x00001000 4 5 Figure 2 7 4 2 3 1 Example to read the calibration status of CP6 after having performed a cancel command at CP6 The status reports no messages The last successful calibration at CP6 has been performed at pH 4 5 The sensor is running on a valid standard calibration and no product calibration is stored 2 7 4 2 4 Product calibration Restore standard calibration Calibration status after restoring a standard calibration from an active product calibration Command Calibration status CP6 Modbus address 5318 Length 6 Type 3 Read Parameter Status Unit Value Format Hex Hex Float Value 0x10000000 0x00001000 4 5 Figure 2 7 4 2 4 1 Example to
26. measurement will be frozen and sent to analog interfaces e Measurement in this range the sensor is able to measure e Calibration in this range the sensor can be calibrated Start Number of Regi Reg2 Regs Reg4 Modbus Read Write register registers function access access code 4608 4 Operating Operating 3 4 U A S none temperature min C temperature max C 4612 4 Measurement Measurement 3 4 U A S none temperature min C temperature max C 4616 4 Calibration Calibration 3 4 U A S none temperature min C temperature max C Figure 2 8 1 1 Definition of register 4608 4612 and 4616 Command Operating T range Modbus address 4608 Length 4 Type 3 Read Parameter Operating T min Operating T max C C Format Float Float Value 20 130 Figure 2 8 1 2 Example to read the operating temperature values min and max Command Measurement T range Modbus address 4612 Length 4 Type 3 Read Parameter Measurement T Measurement T min C max C Format Float Float Value 20 130 Figure 2 8 1 3 Example to read the measurement temperature values min and max Command Calibration T range Modbus address 4616 Length 4 Type 3 Read Parameter Calibration T min Calibration T max C C Format Float Float Value 5 50 Figure 2 8 1 4 Example to read the calibration t
27. read the calibration status of CP6 after having restored the standard calibration from an active product calibration CP6 The status says CP6 assigned 0x10000000 The last successful calibration at CP6 has been performed at pH 4 5 The sensor is running on a valid standard calibration but a valid product calibration is still available in the sensor 2 7 4 2 5 Product calibration Restore product calibration Calibration status after restoring an available product calibration from an active standard calibration Command Calibration status CP6 Modbus address 5318 Length 6 Type 3 Read Parameter Status Unit Value Format Hex Hex Float Value 0x14000000 0x00001000 4 5 Figure 2 7 4 2 5 1 Example to read the calibration status of CP6 after having restored an available product calibration CP6 from an active standard calibration CP1 CP2 The status says CP6 active 0x04000000 and CP6 assigned 0x10000000 The last successful calibration corresponding to the here performed assignment has been performed at pH 4 5 The sensor is running on a valid product calibration again 624300 01 page 47 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 7 5 Currently active Calibration Parameters part 1 In registers 5164 CP1 5196 CP2 and 5324 CP6 the currently active calibration parameters part 1 are stored These registers contain the values for tem
28. register 3370 the active physical unit of measurement the selected value and the min and max values can be read Start Number of Reg1 Regs Reg5 Reg7 Modbus Read Write register registers Reg2 Reg4 Reg6 Reg8 function access access code 3370 8 Physical Current Min Max 3 4 U A S none unit value value value Figure 2 6 2 3 1 Definition of register 3370 Command Moving average Modbus address 3370 Length 8 Type 3 Read Parameter Unit Value Min value Max value Format Hex Decimal Decimal Decimal Value 0x01 10 1 16 Figure 2 6 2 3 2 Example to read PA9 The physical unit is 0x01 none the value is 10 and the limit is 1 to 16 624300 01 page 29 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 6 3 PA12 Moving Average R pH ARC Sensors allow to have a separate moving average on secondary measurement values e Glass resistance e Reference resistance The moving average can be applied on 1 to 16 3 s measurement values The default value is 4 Especially if high resistances are measured it is recommended to choose a higher moving average 2 6 3 1 Description of PA12 Moving Average R In register 3456 a plain text ASCII description of PA12 is given Start Number of Regi Reg8 Modbus Read Write register registers 16 ASCII characters function code acce
29. register structure uses the following physical units used for Primary or Secondary Measurement Channels Bit Hex code Physical unit Start register 8 ASCII characters length 4 registers Type 3 read for U A S 0 LSB 0x00000001 none 1920 1 0x00000002 K 1924 2 0x00000004 C 1928 3 0x00000008 F 1932 4 0x00000010 vol 1936 5 0x00000020 sat 1940 6 0x00000040 ug l ppb 1944 7 0x00000080 mg l ppm 1948 8 0x00000100 g l 1952 9 0x00000200 uS cm 1956 10 0x00000400 mS cm 1960 11 0x00000800 1 cm 1964 12 0x00001000 pH 1968 13 0x00002000 mV pH 1972 14 0x00004000 kOhm 1976 15 0x00008000 MOhm 1980 16 0x00010000 pA 1984 17 0x00020000 nA 1988 18 0x00040000 uA 1992 19 0x00080000 mA 1996 20 0x00100000 uV 2000 21 0x00200000 mV 2004 22 0x00400000 V 2008 23 0x00800000 mbar 2012 24 0x01000000 Pa 2016 25 0x02000000 Ohm 2020 26 0x04000000 C 2024 27 0x08000000 2028 28 0x10000000 not used 2032 29 0x20000000 not used 2036 30 0x40000000 not used 2040 31 MSB 0x80000000 SPECIAL 2044 Figure 2 5 1 4 Definition of physical units used for PMC and SMC Command Unit text Modbus address 1968 Length 4 Type 3 Parameter Value Text pH Figure 2 5 1 5 Example to read the physical unit in plain text ASCII in regis
30. registers code 5520 8 pH value of Electrical Electrical free 3 4 A S none calibration potential at potential at standard at CP1 CPI CP1 pH mV mV 5528 8 pH value of Electrical Electrical free 3 4 A S none calibration potential at potential at standard at CP2 CP2 CP2 pH mV mV 5560 8 pH value of Electrical Electrical free 3 4 A S none product at potential at potential at CP6 pH CP6 mV CP6 mV Figure 2 7 7 1 Definition of register 5520 5528 and 5560 Command Act calibration CP1 Modbus address 5520 Length 8 Type 3 Read H CP1 pH i Volt V CP1 K f Figure 2 7 7 2 Example to read the actual calibration values of CP1 Command Act calibration CP2 Modbus address 5528 Length 8 Value _Parameter pH CP2 pH 7 006804 3 099747 Voltage CP2 mV 296 6901 Temp CP2 K Figure 2 7 7 3 Example to read the actual calibration values of CP2 Command Act calibration CP6 Modbus address 5560 Length 8 Type 3 Read Parameter pH CP6 pH Voltage CP6 mV Temp CP6 K free Format Float Float Float Float Value 7 1 5 10469 298 3302 0 Figure 2 7 7 4 Example to read the actual calibration values of CP6 2 7 8 Currently active Calibration Parameters part 4 For standard calibration CP1 CP2 register 5448 documents offset at pH7 and slope Start Number Regi Reg2
31. the current is regulated in a closed loop control the electrical current the sensor is measuring to feed the closed loop control These values are helpful in order to compare against the externally measured electrical current Start Number of Reg1 Reg2 Regs Reg4 Modbus Read Write register registers function code access access 4414 4 Set point Internally measured 3 4 U A S none mA mA AO1 AO1 4542 4 Set point Internally measured 3 4 U A S none mA mA AO2 AO2 Figure 2 4 6 1 Definition of register 4414 4542 Command Internal values AO1 Modbus address 4414 Length 4 Type 3 Read Parameter Set point Internally measured mA mA Format Float Float Value 9 99186 9 99742 Figure 2 4 6 2 Example to read the internal values of AO1 depending on the analog interface mode HAMILTON 624300 01 page 17 67 pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 5 Measurement 2 5 1 Definition of Measurement Channels and Physical Units The pH ARC Sensor Modbus register structure allows the definition of 6 individual Primary Measurement Channels PMC and 16 individual Secondary Measurement Channels SMC Bit Hex code Description Definition 0 LSB 0x000001 PMC1 pH 1 0x000002 PMC2 not available not available 4 0x000010 PMC5 not available 5 0x000020 PMC6 Tempe
32. to read the calibration values for CP2 The physical unit is C 0x00000004 the temperature is 24 37691 C the number of calibrations at CP1 is 5 and the operating hour is 16 45 h Command Calibration CP6 values Modbus address 5324 Length 8 Type 3 Read Parameter Unit of temperature Temperature Number of cali Operating hour Format Hex Float Decimal Float Value 0x00000004 29 93368 12 379 5167 Figure 2 7 5 4 Example to read the calibration values 1 for CP6 The physical unit is C 4 the temperature is 29 93 C the number of calibrations at CP1 is 12 and the operating hour is 379 51 h 2 7 6 Currently active Calibration Parameters part 2 Registers 5172 CP1 5204 CP2 and 5332 CP6 are not defined for pH ARC Sensors as they document atmospheric pressure and salinity used for VISIFERM DO VISIFERM DO ARC Sensors only HAMILTON 624300 01 page 48 67 pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 7 7 Currently active Calibration Parameters part 3 In register 5520 5528 and 5560 the pH value of the used calibration standards the electrical potential of the pH sensor and the temperature upon calibration are stored 4 003401 479 927 297 1378 Start Number Regi Regs Reg5 Reg7 Modbus Read Write register of Reg2 Reg4 Reg6 Reg8 function access access
33. 0100 PA9 0x0800 PA12 Parameter 9 and 12 are available Genereal note e PA1 to PA8 use FLOAT as data format for its values e PAY to PA16 use UNSIGNED INT as data format for its values 624300 01 page 26 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 6 2 PA9 Moving Average The pH ARC Sensor provides new pH readings every 3 seconds One has the possibility to smoothen the pH reading PMC1 by means of a moving average applied to the 3 seconds readings PA9 can be applied on 1 to 16 3 seconds readings The default value is 2 Effect of Moving Average n 1 vs n 16 a can can car Mc Mc Mr Mr Mc Br u a a Mt Mas Bra Mc Mr ra ra ra Bra Kr Bra mov av 1 9 8 mov av 16 4 lt Qa 3 5 3 2 5 2 a oO Oo oO Oo oO N N N N e gt D e gt D Q Q x x x x x x x x x x x x x x x x x To fe LO o O o O o oO o O oO o O o oO oO o O o o o O time Effect of Moving Average n 1 vs n 16 5 2 5 18 mov av 1 mov av 16 o o o o Co N N N N co foe ee O O O O Q Q Q t FTF YT tT tT YT FT FY Nr i DO W i 6 O o O vo O o O o O O O B amp H O wb wo wb ee cr E a ep a RR es ee ee eet Ue eek es time Figure 2 6 2 1 Comparison of the response of a pH ARC Sensor to a change from pH 5 1 to pH 2 5 using no mov
34. 03 Figure 2 4 1 2 Example to read the available analog interfaces The answer is Ox03 meaning that there exists an Analog Interface 1 AO1 and an Analog Interface 2 AO2 2 4 2 Available Analog Interface Modes With register 4322 the available analog interface modes for AO1 and AO2 are defined Start Number of Reg1 Regs Reg5 Reg7 Modbus Read Write register registers Reg2 Reg4 Reg6 Reg8 function access access code 4322 8 Available Available reserved reserved 3 4 U A S none Analog Analog Interface Interface Modes for Modes AO1 for AO2 Figure 2 4 2 1 Definition of register 4322 It defines the analog interface modes available for AO1 and AO2 The analog interface modes are described in Figure 2 4 2 2 Code Analog Interface Description Hex Mode 0x00 4 20 mA inactive Analog interface deactivated 0x01 4 20 mA fixed Set to a constant output value for current loop testing 0x02 4 20 mA linear Linear output of measurement PMC1 6 0x04 4 20 mA bilinear Bilinear output of measurement PMC1 6 Figure 2 4 2 2 Definition of the analog interface modes valid for both AO1 and AO2 Command Analog Interface Modes Modbus address 4322 Length 8 Type 3 Read Parameter Available Analog Available Analog reserved reserved Interface Modes for Interface Modes for AQ1 AO2 Format Hex Hex Hex Hex Value 0x07 0x07 0x0 0
35. 12 Moving Average R iakat ia vakaat tanarak aratarak akakaa kakata iakauakaat 30 2 7 GALIBRA TON zerera anenai ave east ee E i ind iii i i io 32 2 7 1 Available Calibration Points 32 2 7 2 Definitions of Calibration PoOIntS eee eeeeccneeeeeeeeeeeeecaaeeeeeeeeteeniaaes 33 2 7 3 Galibration Procedure 2 l 2 een 35 2 7 4 Reading the Calibration Status 44 2 7 5 Currently active Calibration Parameters part 1 48 2 7 6 Currently active Calibration Parameters part 2 48 2 7 7 Currently active Calibration Parameters part 3 49 2 7 8 Currently active Calibration Parameters part 4 i 49 2 7 9 Special Commands for Calibration with VISICAL 50 2 7 10 Calibration StandardS i 51 2 8 SENSOR STAT Sampara a a a E a 57 2 8 1 Temper ture Ranges lira 57 2 8 2 Operating Hours and Counters 58 2 8 3 W AMIN S ane n 59 2 8 4 ENOI ecr EAE inn 60 2 8 5 Reading Definition of SIP and CIP ui 62 2 8 6 Reading the Sensor s Quality INGiCator ceccceeeeeeeeeeeeeeeceeeee teste eeteeaaaeeeeeeeeeeeenaaaes 63 2 9 SENSOR IDENTIFICATION AND INFORMATION i 64 2 9 1 General INOmMalon upsssialoni ia 64 2 9 2 Sensor IGENtITICationi irrita 64 2 9 3 Free User Memory Space cia 65 2 10 SYSTEM COMMANDS ssi ia 66 2 10 1 Recall Sensor s Factory Settings 66 3 ABBREVIATIONS i
36. 12 automatic recognition 28 31 not available Figure 2 7 10 2 8 Availability Selection for the 12 calibration standards within one given set Bit 0 11 define availability of standards 1 12 for manual calibration Bit 16 27 define availability of standards 1 12 for automatic recognition Register 9528 the corresponding calibration standard is available if bit is set Register 9530 the corresponding calibration standard is selected if bit is set 624300 01 page 53 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 By means of register 9530 the specialist can define for each available calibration standard if the specific standard is available Start Number of Regi Reg2 Modbus Read Write register registers Bit see figure 2 7 10 2 8 function code access access 9530 2 Selected standard fields 3 4 U A S S Figure 2 7 10 2 9 Selected calibration standards within one given set Command Selected standard fields Modbus address 9530 Length 2 Type 3 Read Parameter Standard fields Value i 0x02480FFF Figure 2 7 10 2 10 Example to read the selected calibration standards The value 0x02480FFF says that e all 12 calibration standards are selected for manual selection e only calibration standards 3 7 and 10 are selected for automatic recognition Command Selected standard fields Modbus address 9530 Length 2 Type 16 Write
37. 30 minutes SIP temperature min 120 C SIP temperature max 130 C SIP time min 30 minutes CIP and SIP T CIP 3 m T SIP o 3 CIP min e CIP max SIP min Luni SIP max 0 T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T omnononoinoinoinononoinonononoinoononNnoonNnoinono QUQILQCQTLOCNTOTKTNIYIOrMIOorMitorQTtorMgyOhrQgt0Q 00 00 DD DIDO OOOTnTrrT_NNNNIMMMNZE lt zt td ML NL 00 DON cc 55 Sorrrrerrrrrrrrerrrerrrrerrcrrerrrer rer Time Figure 2 8 5 1 Definition of CIP and SIP cycles 1 no SIP cycle counted because time too short lt 30 minutes 2 CIP cycle counted because time gt 30 minutes and in CIP temperature range 3 SIP cycle counted because time gt 30 minutes and in SIP temperature range 4 no CIP cycle counted because of reaching the SIP min limit Start Number Regi Regs Reg5 Reg7 Modbus Read Write register of Reg2 Reg4 Reg6 Reg8 function access access registers code 4988 8 SIP SIP SIP Empty 3 4 U A S S Tempera Tempera Process ture min ture max time min C C min 4996 8 CIP CIP CIP Empty 3 4 U A S S Tempera Tempera Process ture min ture max time min C C min Figure 2 8 5 2 Definition of register 4988 and 4996 624300 01 page 62 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11
38. 4376 4504 Command Avail unit AO1 Modbus address 4376 Length 2 Type 3 Read Parameter Available unit Format Hex Value 0x001000 Figure 2 4 5 5 2 Example to read the selected unit of the selected PMC of AO1 The value returned is 0x001000 accordingly the unit is pH The physical unit for PMC is defined in Reg 2090 or 2410 and applies automatically for 4 20 mA output 2 4 5 6 Defining the Measurement Values for 4 12 and 20 mA Output Start Number of Reg1 Reg2 Regs Reg4 Reg5 Reg6 Modbus Read Write register registers function access access code 4378 6 Measurement Measurement Measurement 3 4 16 U A S S value at value at value at Min Output Max Output Mid Output Current 4 mA Current 20 Current 12 for AO1 mA for AO1 mA for AO1 4506 6 Measurement Measurement Measurement 3 4 16 U A S S value at value at value at Min Output Max Output Mid Output Current 4 mA Current 20 Current 12 for AO2 mA for AO2 mA for AO2 Figure 2 4 5 6 1 Definition of register 4378 4506 Command MinMaxMid value AO1 Modbus address 4378 Length 6 Type 16 Write Parameter Min value Max value Mid value Format Float Float Float Value 3 10 7 Figure 2 4 5 6 2 Example to set the min value to 3 for 4 mA the max value to 10 for 20 mA and the mid value to 7 for 12 mA The corresponding physical unit can be read in register 4376
39. 48 Note the pH value of CP1 can be lower or higher than the pH value of CP2 However the difference in pH between CP1 and CP2 must always be greater than 1 pH unit Notes e In order to perform a standard calibration at CP1 and CP2 it is necessary to use commercially available calibration standards The operator is restricted to use those standards that are defined in the six sets of calibration standards see chapter 2 7 11 e There are two ways of performing a standard calibration standard calibration with automatic recognition of the calibration standard in this case the sensor decides on itself in what calibration standard it is immersed The criteria to decide on is the electrical potential measured The sensor checks the list of calibration standards that are available for automatic recognition see chapter 2 7 11 standard calibration with manual selection of the calibration standard the operator is selecting the calibration standard in which the sensor is immersed e Factory calibration is pH 4 at CP1 and pH 7 at CP 2 624300 01 page 35 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 Standard Calibration with Automatic Recognition of the Standard Prior to calibration the specialist selects for each set of calibration standards a list of calibration standards allowed for automatic recognition register 9530 When the calibration is initiated the sensor screens this list of allowe
40. 8 2 for AO2 for AO2 for AO2 for AO2 Figure 2 4 5 8 1 Definition of register 4386 4514 Bit Code hex Behaviour of the 4 20 mA interface in case of errors and warnings 0 LSB 0x000001 Error continuous output not available 16 0x010000 Warning continuous output not available Figure 2 4 5 8 2 Code for the 4 20 mA interface in case of errors and warnings If the corresponding bits for the errors and warnings are not set 0x00 the respective options are inactive The default settings are e Code 0x01 e current in case of warnings 3 5 MA e currentin case of errors 3 5 MA e current in case of temperature exceed 3 5 mA Command ErrorWarnings AO1 Modbus address 4386 Length 8 Type 3 Read Parameter Warning code Current in case of Current in case of Current in case of warning error temperature exceed mA mA mA Format Hex Float Float Float Value 0x010001 3 5 3 5 3 5 Figure 2 4 5 8 4 Example Read the settings for AO1 in case of warnings and errors Warning code 0x010001 corresponds to the continuous output current in case of warning 0x010000 and continuous output current in case of error 0x01 of 3 5 mA The output current in case of temperature exceed is 3 5 mA 624300 01 page 16 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 4 6 Reading the Internally Measured Output Current Reg 4414 4542 provides internal parameters of AO1 AO2 the setpoint to which
41. AO1 AO2 must be set to analog interface mode 0x01 Start Number of Regi Reg2 Modbus Read Write register registers function code access access 4384 2 Constant current output value for 3 4 16 U A S S AO1 mA 4512 2 Constant current output value for 3 4 16 U A S S AO2 mA Figure 2 4 5 7 1 Definition of register 4384 4512 Command Fixed value AO1 Modbus address 4384 Length 2 Type 3 Read Parameter Fixed value mA Format Float Value 10 Figure 2 4 5 7 2 Example to read the constant current output in mode 0x01 for AO1 It is set to 10 mA 624300 01 page 15 67 HAMILTON 2 4 5 8 Defining the Error and Warning Output of the 4 20 mA Interface pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 Errors and warnings can be mapped to the AO1 AO2 Start Number of Reg1 Regs Reg5 Reg7 Modbus Read Write register registers Reg2 Reg4 Reg6 Reg8 function access access code 4386 8 Code of Current Current Current in 3 4 16 WAS S warnings in case of in case of case of and errors warning error T exceed see Figure mA mA mA 2 4 4 8 2 for AO1 for AO1 for AO1 for AO1 4514 8 Code of Current Current Current in 3 4 16 WAS S warnings in case of in case of case of and errors warning error T exceed see Figure mA mA mA 2 4 4
42. Error message indicates a serious problem of the sensor which does not allow further proper functioning of the sensor This problem must be solved 2 8 4 1 Currently Active Errors The currently active errors are stored in register 4800 Start Number Reg1 Regs Reg5 Reg7 Modbus Read Write register of Reg2 Reg4 Reg6 Reg8 function access access registers code 4800 8 Active error Active error Active error Active error 3 4 U A S none measure calibration interface hardware ment bitwise bitwise bitwise bitwise defined defined defined defined Figure 2 8 4 1 1 Definition of register 4800 see chapter 2 8 4 3 Command Active errors Modbus address 4800 Length 8 Type 3 Read Parameter E Measurement E Calibration E Interface E Hardware Format Hex Hex Hex Hex Value 0x00 0x00 0x00 0x00 Figure 2 8 4 1 2 Example to read the currently active errors 2 8 4 2 History of Errors The history of errors is not implemented in pH ARC Sensors 624300 01 page 60 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 8 4 3 Definition of Errors Bit Hex Description not available 5 0x0000020 Glass resistance too high 6 0x0000040 Glass resistance too low 7 0x0000080 Reference electrode resistance too high 8 0x0000100 Reference electrode resist
43. Parameter i Figure 2 7 10 2 11 Example to set the standard fields to 12 calibration standards for manual calibration and calibration standard 3 0x00040000 5 0x00100000 7 0x00400000 9 0x01000000 and 11 0x04000000 for automatic recognition A Attention The standards selected for automatic recognition must exhibit a difference in pH of at least 2 pH units Calibration Standards Available calibration standards TOTAL Available calibration standards USER IV Standard 1 auto cali 1 09 pH IV Standard 1 manual cali 1 09 pH TT Standard 1 auto cali 1 09 pH IV Standard 2 manual cali 2 pH IV Standard 2 auto cali 2 pH VW Standard 2 manual cali 2 pH Standard 2 auto cali 2 pH IV Standard 3 manual cali 3 06 pH IV Standard 3 auto cali 3 06 pH IV Standard 3 manual cali 3 06 pH TT Standard 3 auto cali 3 06 pH IV Standard 4 manual cali 4 01 pH IV Standard 4 auto cali 4 01 pH IV Standard 4 manual cali 4 01 pH IV Standard 4 auto cali 4 01 pH IV Standard 5 manual cali 5 pH IV Standard 5 auto cali 5 pH IV Standard 5 manual cali 5 pH T Standard 5 auto cali 5 pH JV Standard 6 manual cali 6 pH IV Standard 6 auto cali 6 pH IV Standard 6 manual cali 6 pH TT Standard 6 auto cali 6 pH IV Standard 7 manual cali 7 pH IV Standard 7 auto cali 7 pH IV Standard 7 manual cali 7 pH IV Standard 7 auto cali 7 pH IV Standard 8 manual cali 8 pH IV Standard 8 auto cali 8 pH IV Standard 8
44. Regs Reg4 Reg5 Reg6 Modbus Read Write register of Float Float Float function access access registers code 5448 6 Offset at Slope 25 C Reference 3 4 U A S none pH 7 mV mV pH temperature K Figure 2 7 8 1 Definition of register 5448 Command Calculated cali values _ Modbus address 5448 Length 6 Type 3 Read Parameter Offset at pH 7 i Slope i Ref temp mV mV pH IR ee 607782 59 47631 29815 Figure 2 7 8 2 Example to read register 5448 offset at pH 7 is 3 6 mV slope is 59 5 mV pH reference temperature is 298 15 K 25 C HAMILTON 624300 01 page 49 67 pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 7 9 Special Commands for Calibration with VISICAL The VISICAL calibration device allows calibration of pH ARC Sensors at CP1 or CP2 The pH ARC Sensor s associated calibration parameters for CP1 and CP2 are those predefined and stored in corresponding registers of the sensor Register 5164 defines the pH value for CP1 and register 5196 defines the pH value for CP2 which are only valid for use with VISICAL The same calibration limits for the pH value are used as for standard calibration at CP1 and CP2 register 5152 and 5184 respectively A Attention e Itis not possible to perform a product calibration using VISICAL e Physical unit is fixed to pH by definition Start Number of Regi Reg2 Modbus Read Write regist
45. address 2464 Length 8 Type 3 Read Parameter Text Format Character Value R glass Figure 2 5 5 1 3 Example to read the description of SMC1 at address 2464 It is R glass 624300 01 HAMILTON page 24 67 pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 5 5 2 Reading the measurement value of SMC The registers defined here are used to read the measurement values of each SMC Start reg Num Reg1 Reg2 Reg3 Reg4 Reg5 Reg6 Modbus Read Write ber of function access access reg code Address 6 Physical unit Measurement Standard 3 4 U A S none value of SMC deviation Figure 2 5 5 2 1 Definition of register at Address Measurement value of each SMC Description Address Text Unit Min value Max value SMC1 2472 R glass MOhm 30 600 SMC2 2504 R reference kOhm 0 25 100 SMC3 2536 R auxiliary kOhm 0 25 100 SMC4 2568 E pH vs ref mV 900 900 SMC5 2600 ESGvs ref mV 900 900 SMC6 2632 E aux vs ref mV 50 50 SMC7 2664 E reference mV 900 900 SMC8 2696 pH act pH 0 5 14 SMC9 2728 T act K 253 403 Figure 2 5 5 2 2 Full list of register addresses for the measurement values of SMC1 to SMC9 Example Command SMC1 read Modbus address 2472 Length 6 Type 3 Read Parameter Unit Value Standard dev Format Hex Float Float Value 0x8000 247 56 0 02
46. aduz AG Via Crusch 8 CH 7402 Bonaduz Switzerland Tel 41 81 660 60 60 Fax 41 81 660 60 70 contact hamilton ch www hamiltoncompany com 05 May 2010 Manual P N 624300 01 624300 01 page 67 67 HAMILTON
47. ali 0 pH TT Standard 12 auto cali 0 pH RADIOMETER Standard 1 manual cali 1 09 pH F Standard 1 auto cali 1 09 pH IV Standard 2 manual cali 1 68 pH IV Standard 2 auto cali 1 68 pH 7 Standard 3 manual cali 0 pH TT Standard 3 auto cali 0 pH JV Standard 4 manual cali 4 01 pH IV Standard 4 auto cali 4 01 pH TT Standard 5 manual cali 0 pH TT Standard 5 auto cali 0 pH IV Standard 6 manual cali 6 84 pH JV Standard 6 auto cali 6 84 pH V Standard 7 manual cali 7 pH IV Standard 7 auto cali 7 pH IV Standard 8 manual cali 7 38 pH IV Standard 8 auto cali 7 38 pH IV Standard 9 manual cali 9 18 pH IV Standard 9 auto cali 9 18 pH J Standard 10 manual cali 10 01 pH JV Standard 10 auto cali 10 01 pH TT Standard 11 manual cali 0 pH TT Standard 11 auto cali 0 pH TT Standard 12 manual cali 0 pH TT Standard 12 auto cali 0 pH Figure 2 7 10 2 13 Default definitions in register 9528 for all 6 sets of calibration standards available in pH ARC Sensors 624300 01 page 56 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 8 Sensor Status 2 8 1 Temperature Ranges In registers 4608 4612 and 4616 three different temperature ranges are defined e Operation in this range the sensor will work properly current output Modbus communication except the measurement which is stopped until the temperature is back in the measurement range In this case the last value of
48. ance too low not available 15 0x0008000 Auxiliary electrode electrical potential too high 16 0x0010000 Auxiliary electrode electrical potential too low 17 0x0020000 Auxiliary electrode resistance too high 18 0x0040000 Auxiliary electrode resistance too low not available 25 0x2000000 Temperature sensor defective Figure 2 8 4 3 1 Definition of errors measurement Bit Hex Description 1 0x0000002 Sensor failure Quality value lt 15 Figure 2 8 4 3 2 Definition of errors calibration Bit Hex Description not available Figure 2 8 4 3 3 Definition of errors interface None is defined Bit Hex Description not available 24 0x1000000 Internal communication error between front end and user end Figure 2 8 4 3 4 Definition of errors hardware 624300 01 page 61 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 8 5 Reading Definition of SIP and CIP pH ARC Sensor are counting special cleaning events such as sterilizations or cleaning cycles by means of tracking typical temperature profiles see chapter 2 8 2 Register 4988 defines a typical temperature profile for SIP sterilization in place and register 4996 for CIP cleaning in place For the explanation the following values are given CIP temperature min 80 C CIP temperature max 100 C CIP time min
49. and illustrations from WinTECH Modbus Master ActiveX Control tool WinTECH www win tech com Modbus Master OCX for Visual Basic The Modbus Organisation www modbus org tech php provides other links to a wide variety of Modbus terminal softwares In the present manual the addressing of the Modbus registers starts at 1 But the Modbus master protocol operates with register addresses starting at 0 Usually the Modbus master software translates the addressing Thus the register address of 2090 will be translated by the Modbus master software to 2089 which is sent to the sensor Modbus slave A Attention When configuring and calibrating the sensor please limit write operations to a reasonable number More than 100 000 write operations will physically damage the memory of the sensor Furthermore for the Free User Memory Space see chapter 2 9 3 the write operations are limited to 10 000 2 2 Operator levels and Passwords 2 2 1 Reading Setting Operator Level A pH ARC Sensor can be operated in three different operator levels Each operator level allows a defined access to a specific set of commands Abbreviation Description Code hex Password decimal U User lowest level 0x03 0 A Administrator 0x0C 18111978 S Specialist 0x30 16021966 Figure 2 2 1 1 Definition of operator level and default passwords At each power up or processor reset the operator level falls back to the default level
50. andard 2 auto cali 2 pH IV Standard 3 auto cali 3 pH IV Standard 4 auto cali 4 pH IV Standard 5 auto cali 5 pH IV Standard 6 auto cali 6 pH IV Standard 7 auto cali 7 pH IV Standard 8 auto cali 8 pH IV Standard 9 auto cali 9 pH IV Standard 10 auto cali 10 pH IV Standard 11 auto cali 11 pH IV Standard 12 auto cali 12 pH DIN 19267 pi TT Standard 2 manual cali 0 pH JV Standard 3 manual cali 3 06 pH 7 Standard 4 manual cali 0 pH IV Standard 5 manual cali 4 65 pH 7 Standard 6 manual cali 0 pH JV Standard 7 manual cali 6 79 pH TT Standard 8 manual cali 0 pH V Standard 9 manual cali 9 23 pH 7 Standard 10 manual cali 0 pH TT Standard 11 manual cali 0 pH VW Standard 12 manual cali 12 75 pH V Standard 1 auto cali 1 09 pH TT Standard 2 auto cali 0 pH V Standard 3 auto cali 3 06 pH TT Standard 4 auto cali O pH IV Standard 5 auto cali 4 65 pH TT Standard 6 auto cali 0 pH JV Standard 7 auto cali 6 79 pH TT Standard 8 auto cali 0 pH JV Standard 9 auto cali 9 23 pH 7 Standard 10 auto cali 0 pH 7 Standard 11 auto cali 0 pH IV Standard 12 auto cali 12 75 pH NIST STANDARD ni JV Standard 2 manual cali 1 68 pH TT Standard 3 manual cali 0 pH J Standard 4 manual cali 4 01 pH TT Standard 5 manual cali 0 pH T Standard 6 manual cali 0 pH IV Standard 7 manual cali 6 86 pH TT Standard 8 manual cali O pH JV Standard 9 manual
51. asurement value of PMC1 Value is always in the physical unit defined in register 2090 Definition of the status see chapter 2 5 4 All bits set to zero means no problem Command PMC1 read Modbus address 2090 Length 10 Type 3 Read Parameter Unit Value Status Min limit Max limit Format Hex Float Hex Float Float Value 0x1000 4 02503 0x00 0 14 Figure 2 5 2 3 2 Example to read register 2090 Physical unit is set to pH 0x1000 PMC1 is pH 4 02503 Status is 0x00 Min allowed value is pH 0 Max allowed value is pH 14 Command PMC1 read Modbus address 2090 Length 10 Type 3 Read Parameter Unit Value Status Min limit Max limit Format Hex Float Hex Float Float Value 0x200000 175 9922 0x00 0 954 6541 Figure 2 5 2 3 3 Example to read register 2090 Physical unit is set to mV 0x200000 PMC1 is 175 9922 mV Status is 0x00 Min allowed value is 414 0028 mV Max allowed value is 414 0028 mV For the definition of the measurement status see chapter 2 5 4 A Attention You cannot read selectively the registers 3 and 4 for the measurement value only You have to read the entire length of the command 10 registers and extract the desired information 624300 01 page 21 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 5 3 Primary Measurement Channel 6 Temperature 2 5 3 1 Description of PMC6 In register 2400 a plain text ASCII description of PMC6 is given
52. at Float Value 0x04 24 35834 0x00 20 130 Figure 2 5 3 3 2 Example to read register 2410 Physical unit is set to C 0x04 PMC6 is 24 35834 C Status is 0x00 Min allowed value is 20 C Max allowed value is 130 C For definition of the measurement status see chapter 2 5 4 A Attention You cannot read selectively the registers 3 and 4 for the measurement value only You have to read the entire length of the command 10 registers and extract the desired information 2 5 3 4 Unlike to the VISIFERM DO this feature is not available for pH ARC Sensors Input of an Externally Measured Temperature 2 5 4 Definition of the Measurement Status for PMC1 PMC6 This is the definition of the status registers read in registers 2090 PMC1 and 2410 PMC6 Bit Hex code Description 0 LSB 0x01 Temperature out of measurement range see chapter 2 8 1 1 0x02 Temperature out of operating range see chapter 2 8 1 2 0x04 Calibration status not zero see chapter 2 7 4 3 0x08 Warning not zero see chapter 2 8 3 4 0x10 Error not zero see chapter 2 8 4 Figure 2 5 4 1 Definition of measurement status for Primary Measurement Channels 624300 01 page 23 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 5 5 Secondary Measurement Channels 1 16 pH ARC Sensors do allow access to secondary measurement values 16 in total The acce
53. at pH 4 01 Command Calibration status CP2_ Length 6 Modbus address 5190 Parameter i l Type 3 Figure 2 7 4 1 4 Example to read the calibration status of CP2 after calibrating CP2 at 0 auto All bits of CP2 are zero 0x00000080 indicating that the calibration was successful The physical unit of the last calibration is pH 0x00001000 and the last successful calibration has been performed at pH 7 Command Calibration status CP2 _ Length 6 Type 3 Parameter Status Modbus address 5190 i Value i 0x00001000 Figure 2 7 4 1 5 Example to read the calibration status of CP2 after attempt to calibrate CP2 at pH 4 01 which is the same as CP1 The value is 0x00000180 0x00000080 0x00000100 Shown is still 0x00000080 of CP1 and new 0x00000100 of CP2 which says CP2 space to CP1 lt pH 1 0 2 7 4 2 Reading the Calibration Status of CP6 Product Calibration The calibration status and the current state of the product calibration process CP6 is read in the calibration status register for CP6 register 5318 Start Number of Regi Reg2 Reg3 Reg4 Reg5 Reg6 Modbus Read Write register registers function access access code 5318 6 Status CP6 Physical unit of pH value of the 3 4 U A S none see figure the last last successful 2 7 4 1 1 successful calibration CP6 calibration CP6 always pH Figure 2 7 4
54. cali 9 18 pH 7 Standard 10 manual cali 0 pH TT Standard 11 manual cali 0 pH JV Standard 12 manual cali 12 45 pH TT Standard 1 auto cali 0 pH IV Standard 2 auto cali 1 68 pH TT Standard 3 auto cali 0 pH IV Standard 4 auto cali 4 01 pH TT Standard 5 auto cali 0 pH TT Standard 6 auto cali 0 pH IV Standard 7 auto cali 6 86 pH TT Standard 8 auto cali 0 pH IV Standard 9 auto cali 9 18 pH TT Standard 10 auto cali 0 pH TT Standard 11 auto cali 0 pH IV Standard 12 auto cali 12 45 pH 624300 01 page 55 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 Manufacturer Availability for manual selection left and automatic recognition right METTLER TOLEDO Lik TT Standard 1 auto cali 0 pH V Standard 2 manual cali V Standard 2 auto cali 2 pH TT Standard 3 manual cali 0 pH TT Standard 3 auto cali 0 pH IV Standard 4 manual cali 4 01 pH IV Standard 4 auto cali 4 01 pH IT Standard 5 manual cali 0 pH TT Standard 5 auto cali 0 pH TT Standard 6 manual cali 0 pH TT Standard 6 auto cali 0 pH JV Standard 7 manual cali 7 pH IV Standard 7 auto cali 7 pH TT Standard 8 manual cali 0 pH TT Standard 8 auto cali 0 pH JV Standard 9 manual cali 9 pH IV Standard 9 auto cali 9 pH TT Standard 10 manual cali 0 pH TT Standard 10 auto cali 0 pH J Standard 11 manual cali 11 pH IV Standard 11 auto cali 11 pH TT Standard 12 manual c
55. d Serial number Modbus address 1312 Length 8 Type 3 Parameter Figure 2 9 2 2 Example to read register 1312 2 9 3 Free User Memory Space These registers can be used to store any customer specific information in the sensor There are different registers which can be read by everybody but only specific operators can write them Start Number Regi Reg8 Example of content Modbus Read Write register of 16 ASCII characters function access access registers code 1536 8 Free user space U A S FREE_USERSPACE 3 4 16 U A S U A S 1544 8 Free user space U A S FREE_USERSPACE 3 4 16 U A S U A S 1552 8 Free user space U A S FREE_USERSPACE 3 4 16 U A S U A S 1560 8 Free user space U A S FREE_USERSPACE 3 4 16 U A S U A S 1568 8 Free user space A S FREE_USERSPACE 3 4 16 U A S A S 1576 8 Free user space A S FREE_USERSPACE 3 4 16 U A S A S 1584 8 Free user space A S FREE_USERSPACE 3 4 16 U A S A S 1592 8 Free user space A S FREE_USERSPACE 3 4 16 U A S A S 1600 8 Measuring point 242111 0001001 3 4 16 U A S S 1608 8 Free user space S FREE_USERSPACE 3 4 16 U A S S 1616 8 Free user space S FREE_USERSPACE 3 4 16 U A S S 1624 8 Free user space S FREE_USERSPACE 3 4 16 U A S S 1632 8 Free user space others FREE_USERSPACE
56. d saying that PMC1 is mapped to AO1 factory setting The factory setting for register 4492 is 0x20 mapping PMC6 to AO2 624300 01 page 11 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 4 5 3 Reading the Minimum and Maximum Possible Physical Output Current Start Number of Reg1 Reg2 Regs Reg4 Modbus Read Write register registers function code access access 4366 4 Min physical Max physical 3 4 U A S none output current output current for AO1 MA for AO1 mA 4494 4 Min physical Max physical 3 4 U A S none output current output current for AO2 mA for AO2 mA Figure 2 4 5 3 1 Definition of register 4366 4494 Command Limits AO1 Modbus address 4366 Length 4 Type 3 Read Parameter Min limit mA Max limit mA Format Float Float Value 3 5 22 Figure 2 4 5 3 2 Example to read the min and max output current of AO1 Min is fixed to 3 5 and Max is fixed to 22 mA Currents above 20 and below 4 mA indicate erroneous measurements or errors The same values are stored in register 4494 for AO2 2 4 5 4 Reading the Minimum Maximum and Mid Current for Measurement Value Output Start Number of Regi Reg2 Reg3 Reg4 Reg5 Reg6 Modbus Read Write register registers function access access code 4370 6 Min output for Max output for Mid outp
57. d calibration standards and checks if the currently measured electrical potential is within the allowed range of electrical potentials defined for the individual calibration standards in this list If the sensor does find a corresponding calibration standard the nominal pH value of the specific calibration standard is assigned to the currently measured electrical potential The temperature dependency of the calibration standard is considered during the assignment Temperatue dependency of Hamilton pH buffer solutions 14 5 13 Me nen 12 3 lt gt gt PI x a do gg 5 z 10 o o gt F x 9 2 gt ME ann e 2 8 e a_l amp 7 ETA 6 gt 4 4 5 14 4 o_o aa 3 amp lt gt gt gt gt gt gt gt 4 2 o_o 1 o gt 0 T T T T T 1 0 10 20 30 40 50 60 Temperature C Figure 2 7 3 1 2 Temperature dependency of the pH value of HAMILTON DURACAL calibration standards If the sensor does not find any corresponding calibration standard the bit representing the corresponding status no matching calibration standard is set in the calibration status register Note that only the nominal value of the calibration standard is used for calibration The
58. duct calibration old CP6 until a valid assignment has been done new CP6 624300 01 page 39 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 What happens to the pH ARC Sensor s calibration function upon product calibration CP6 A product calibration adds an offset to the linear calibration function defined by the standard calibration at CP1 and CP2 Product calibration of ARC pH sensors 200 Standard Calibration function _ Product Calibration function 150 100 50 Electrical potential mV o 100 150 200 pH Figure 2 7 3 2 1 Effect of the product calibration CP6 on an existing standard calibration function defined by CP1 and CP2 The operator starts with a Standard Calibration with calibration points CP1 and CP2 CP1 pH value of calibration standard 6 electrical potential 64 2 mV CP2 pH value of calibration standard 9 21 electrical potential 125 2 mV The sensor internally calculates the calibration function using the calibration points CP1 and CP2 The resulting calibration function compensated to the standard temperature 25 C is shown as a straight line The calibration function is described by two parameters the offset at pH 7 and the slope Some weeks later the operator believes that the Standard Calibration function is not correct anymore As t
59. efinition of registers containing read only sensor information Command Userend Firmware Modbus address 1032 Length 8 Type 3 Read Parameter Text EPHUMO11 2 9 2 Sensor Identification Figure 2 9 1 2 Example to read register 1032 Start Number of Reg1 Reg8 Example of content Modbus Read Write register registers 16 ASCII characters function access access code 1280 8 Part number 242111 01 3 4 U A S none 1288 8 Sensor name Polilyte Plus 3 4 U A S none 1296 8 Work order number 3214567 3 4 U A S none 1304 8 Work order date 2010 04 30 3 4 U A S none 1312 8 Serial number 0001001 3 4 U A S none 1320 8 Manufacturer part 1 HAMILTON Bonaduz 3 4 U A S none 1328 8 Manufacturer part 2 AG Switzerland 3 4 U A S none 1336 8 Sensor type ARC e pH Sensor 3 4 U A S none 1344 8 Power supply 007 030V 0150mW 3 4 U A S none 1352 8 Pressure range 0 6 bar 3 4 U A S none 1360 8 Sensor ID 242111 0001001 3 4 U A S none 1368 8 a length 120 3 4 U A S none 1376 8 space holder not available 3 4 U A S none 1384 8 Electrical connection VP 8 0 3 4 U A S none 1392 8 Process connection PG 13 5 3 4 U A S none 1400 8 Sensing material H Glass 3 4 U A S none Figure 2 9 2 1 Definition of registers containing sensor identification 624300 01 page 64 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 Comman
60. elected for manual selection 624300 01 page 50 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 7 10 Calibration Standards 2 7 10 1 Available Sets of Calibration Standards pH ARC Sensors can store and operate six different sets of calibration standards each having max 12 calibration standards Before calibration the operator has to select one defined set to operate with Default setting is the HAMILTON set of calibration standards The operator can change the selection of sets at any time without compromising prior calibration data at CP1 CP2 In register 9472 the available sets of calibration standards are defined Start Number of Regi Reg2 Modbus Read Write register registers Bit see Figure 2 7 10 1 2 function code access access 9472 2 Available calibration standard sets 3 4 U A S none Figure 2 7 10 1 1 Definition of register 9472 Bit Hex value Description Definition 0 LSB 0x00000001 Set 1 HAMILTON 1 0x00000002 Set 2 MERCK TITRISOL 2 0x00000004 Set 3 DIN 19267 3 0x00000008 Set 4 NIST Standard 4 0x00000010 Set 5 METTLER TOLEDO 5 0x00000020 Set 6 RADIOMETER Figure 2 7 10 1 2 Definition of available sets of calibration standards Command Available cali sets Modbus address 9472 Length 2 Type 3 Read Calibration sets 0x0000003F Figure 2 7 10 1 3 Example to read the available
61. ement of a correctly calibrated pH ARC Sensor to specific process conditions Product calibration is a two stage process 1 An initial measurement is performed while the operator takes a sample of the process solution At that time point the pH ARC Sensor stores its raw measurement value temperature and operating hour in the memory While the operator takes the sample to the analytics lab for reference analysis the pH ARC Sensor is still running on its prior standard calibration CP1 and CP2 while the initial measurement data for the ongoing product calibration is kept in the sensor s memory 2 When the result of the reference analysis is available this value is assigned at a second time point to the former initial measurement data stored in the pH ARC Sensor The sensor is now after valid assignment running on a calibration function which is compensated for the correct process conditions The product calibration CP6 is now active Performing a Cancel command for the product calibration CP6 brings the sensor back to its still stored standard calibration CP1 and CP2 If a product calibration is still active and a standard calibration CP1 or CP2 is performed the product calibration CP6 is cancelled If the operator needs to overrun an active product calibration old CP6 by a new product calibration new CP6 the above process applies in the same way After initial measurement the pH ARC Sensor is still running on the first pro
62. emperature values min and max 624300 01 page 57 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 8 2 Operating Hours and Counters In register 4676 are given e total operating hours e operating hours above max measurement temperature see chapter 2 8 1 e the operating hours above max operating temperature see chapter 2 8 1 In register 4682 are stored e number of power ups e number of watchdog resets e number of writing cycles to the sensor s flash memory In register 4688 are given e number of sterilizations in place SIP see chapter 2 8 5 e number of cleanings in place CIP see chapter 2 8 5 Start Number of Regi Reg2 Reg3 Reg4 Reg3 Reg4 Modbus Read Write register registers function code access access 4676 6 Operating Operating Operating 3 4 U A S none hours hours above hours above h max max measurement operating temperature temperature h h 4682 6 Number of Number of Number of 3 4 U A S none Power ups Watchdog Writing resets cycles to flash memory 4688 4 Number of Number of 3 4 U A S none SIP cycles CIP cycles Figure 2 8 2 1 Definition of register 4676 4682 and 4688 Command Operating hours Modbus address 4676 Length 6 Type 3 Read Parameter Operating hours h Operating hours Operating hours above max above max measuremen
63. er registers function code access access 5180 2 pH value at CP1 default pH 4 00 3 4 16 U A S S 5212 2 pH value at CP2 default pH 7 00 3 4 16 U A S S Figure 2 7 9 1 Definition of register 5180 for CP1 and 5212 for CP2 Command VISICAL CP1 Modbus address 5180 Length 2 Type 3 Read Parameter Value pH Format Float Value 4 00 Figure 2 7 9 2 Example to read the pH value valid for CP1 It is 4 00 Accordingly the next time when a calibration is started using VISICAL at LOW a calibration with manual selection is performed using the calibration standard at pH 4 The operator has to make sure that within the selected set of calibration standards a standard at pH 4 is selected for manual selection Command VISICAL CP2 Modbus address 5212 Length 2 Type 16 Write Parameter Value pH Format Float Value 7 00 Figure 2 7 9 3 Example to set the pH value valid for CP2 Command VISICAL CP2 Modbus address 5212 Length 2 Type 3 Read Parameter Value pH Format Float Value 7 00 Figure 2 7 9 4 Example to read the pH value valid for CP2 It is 7 00 Accordingly the next time when a calibration is started using VISICAL at HIGH a calibration with manual selection is performed using the calibration standard at pH 7 The operator has to make sure that within the selected set of calibration standards a standard at pH 7 is s
64. he process is running and he is not able to perform a standard calibration under defined conditions in the lab he decides to perform a product calibration CP6 in other words adjusting the standard calibration function to the process conditions CP6 pH value of product 7 2 electrial potential 5 mV The sensor internally adds an offset to the calibration curve The slope remains unchanged Another special feature of this calibration point is to switch off and back on again a product calibration These functions are called restore standard calibration and restore product calibration Note The sensor s internal criteria for a successful product calibration are e the sensor is currently in an environment corresponding to the pH ARC Sensors measurement range e the manually assigned pH value does not deviate more than 2 pH units from the value measured prior the product calibration 624300 01 page 40 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 The different functionalities of product calibration CP6 are accessible through the following sensor commands e Initial measurement e Assignment e Cancel e Restore standard calibration e Restore product calibration All commands are executed by writing a command value to the register 5340 except for assignment where the calibration value is written to register 5322 see below Definition of the commands for product calibration The commands for
65. he sensor continues measuring using the prior standard calibration 624300 01 page 41 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 7 3 2 2 Product calibration Assignment After successful initial measurement a correct value must be assigned to the initially stored measurement data This is achieved by writing the correct calibration value to register 5322 Start Number of Regi Reg2 Modbus Read Write register registers function code access access 5322 2 pH value pH 16 none A S Figure 2 7 3 2 2 1 Definition of register 5322 Command CP6 Assignment Modbus address 5322 Length 2 Type 16 Write Parameter Value Format Float Value 7 2 Figure 2 7 3 2 2 2 Example to assign a calibration value to the above performed initial measurement This is achieved by writing the correct pH value From now on the sensor is measuring using the here performed product calibration The calibration status register 5318 is 0x14000000 meaning that a correct value has been assigned and that the product calibration is active see figure 2 7 4 1 1 2 7 3 2 3 Product calibration Cancel To cancel an active product calibration or an active initial measurement the command 0x02 is written to register 5340 Command CP6 Cancel Modbus address 5340 Length 2 Type 16 Write Parameter Command Format Hex Value 0x02
66. hown in this figure The product calibration CP6 is used to adjust the standard calibration function to specific process conditions the effect of CP6 is shown in Figure 2 7 3 2 1 624300 01 page 32 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 7 2 Definitions of Calibration Points 2 7 2 1 Calibration Points 1 and 2 Standard Calibration The limits for the calibration point 1 are defined in register 5152 for calibration point 2 in register 5184 Start Number of Regi Reg2 Reg3 Reg4 Reg5 Reg6 Modbus Read Write register registers function code access access 5152 6 Physical unit Min value for Max valuefor 3 4 U A S none currently CPI in the CPI in the active for physical unit physical unit CP1 as definedin as defined in Reg1 and 2 Regi and 2 5184 6 Physical unit Min value for Max valuefor 3 4 U A S none currently CP2 in the CP2 in the active for physical unit physical unit CP2 as definedin as defined in Reg1 and 2 Regi and 2 Figure 2 7 2 1 1 Definition of register 5152 for CP1 and 5184 for CP2 A Attention The only physical unit available for calibration is pH The physical unit defined in 5152 5184 and 5312 for CP1 CP2 and CP6 is NOT linked to the physical unit defined for PMC1 in register 2090 When performing a calibration while having the physical unit set to mV the calibration status will re
67. ing average n 1 or a moving average over 16 3 seconds readings Using moving average the short term signal stability can be improved on the other hand the response time of the sensor increases with increasing moving average A moving average over 16 samples results in a response time of at least 48 s Note e PAQ is applied to both PMC1 and PMC6 624300 01 page 27 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 6 2 1 Description of PA9 Moving Average In register 3360 a plain text ASCII description of PAQ is given Start Number of Reg1 Reg8 Modbus Read Write register registers 16 ASCII characters function code access access 3360 8 Description of PA9 3 4 U A S none Figure 2 6 2 1 1 Definition of register 3360 Command Moving average text Modbus address 3360 Length 8 Type 3 Read Parameter Text Format Character Value Moving average Figure 2 6 2 1 2 Example to read the description for Moving average 2 6 2 2 Selecting the Physical Unit and Writing the Value for PA9 In register 3368 the available physical units for PA9 are defined Start Number of Regi Reg2 Modbus Read Write register registers bitwise defined function code access access 3368 2 Available physical units for PA9 3 4 U A S none Figure 2 6 2 2 1 Definition of register 3368
68. into one of the calibration standards available in the selected set Attention It is important that the pH ARC Sensor is immersed in a defined calibration standard at least 3 minutes BEFORE the calibration is started Step 3 Choose one of the calibration points CP1 or CP2 Attention The assignment of both CP1 and CP2 to the same pH value is rejected Try to avoid the following situations For example the sensor was calibrated earlier at pH 4 CP1 and at pH 7 CP2 e You want to perform a new calibration at CP1 it is possible to assign CP1 to pH 4 or to pH 10 but not to pH 7 already used for CP2 e You want to perform a new calibration at CP2 it is possible to assign CP2 to pH 7 or pH 10 but not to pH 4 already used for CP1 e If you calibrate now CP1 at pH 10 pH 4 will later be free for selection at CP2 In this case you can calibrate CP2 at pH 4 or pH 7 but not at pH 10 CP1 Step 4 Start the calibration automatic recognition or manual selection The calibration is initiated at CP1 by writing to register 5162 or at CP2 by writing to register 5194 Start Number of Regi Reg2 Modbus Read Write register registers function code access access 5162 2 pH value at CP1 unit is always pH 16 none A S 5194 2 pH value at CP2 unit is always pH 16 none A S Figure 2 7 3 1 3 Definition of register 5162 and 5194 You have two options to enter the pH value Automatic recognition pH value 0
69. ion of register 4098 Command Com address limits Modbus address 4098 Length 4 Type 3 Read Parameter Min value Max value Format Decimal Decimal Value 1 32 Figure 2 3 1 2 2 Example to read the device address limits Min 1 Max 32 624300 01 page 7 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 3 2 Baud Rate 2 3 2 1 Reading and Writing the Baud Rate The baud rate can be read and written in register 4102 Start Number of Regi Reg2 Modbus Read Write register registers function code access access 4102 2 Baud rate code 3 4 16 U A S S definition see below Figure 2 3 2 1 1 Definition of register 4102 The code for the baud rate is defined as follows Baud rate 4800 9600 19200 38400 57600 115200 Code 2 3 4 5 6 7 Figure 2 3 2 1 2 Code for the baud rates Command Com baud rate Modbus address 4102 Length 2 Type 3 Read Parameter Baud rate code Format Decimal Value 4 Figure 2 3 2 1 3 Example to read the baud rate code 4 corresponds 19200 baud The baud rate can be set by S Specialist default is 19200 Command Com baud rate Modbus address 4102 Length 2 Type 16 Write Parameter Baud rate code Format Decimal Value 5 Figure 2 3 2 1 4 Example to set the baud rate to 38400 baud wi
70. ion of register 5128 624300 01 page 33 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 Command Read calibration stability Modbus address 5128 Parameter Max drift pH i Max drift Temp Length 4 Type 3 Command Set calibration stability Length 4 Write Parameter Max drift pH H Modbus address 5128 i Max drift Temp K mi _Type 16 Value 0 2 0 5 Figure 2 7 2 1 6 Example to set the calibration stability A Attention The stability criteria defined in register 5128 is valid for CP1 and CP2 only but NOT for CP6 2 7 2 2 Calibration Point 6 Product Calibration The limits for calibration point 6 are given in register 5312 Start Number of Regi Reg2 Reg3 Reg4 Reg5 Reg6 Modbus Read Write register registers function code access access 5312 6 Physical unit Min value for Max valuefor 3 4 U A S none currently CP6 in the CP6 in the active for physical unit physical unit CP6 as definedin as defined in Reg1 and 2 Regi and 2 Figure 2 7 2 2 1 Definition of register 5312 for CP6 Command Calibration limits CP6 Modbus address 5312 Length 6 Type 3 Read Parameter Unit Min value Max value Format Hex Float Float Value 0x01000 0 14 Figure 2 7 2 2 2 Example to read the limits of CP6 The active physical unit is pH the min val
71. l EPHUMO11 2 7 Calibration 2 7 1 Available Calibration Points In register 5120 the available number of Calibration Points CP for Primary Measurement Channel 1 PMC1 is defined 8 individual CP are theoretically possible Start Number of Regi Reg2 Modbus Read Write register registers bitwise defined function code access access 5120 2 Available number of CP for PMC1 3 4 U A S none see figure 2 7 1 2 Figure 2 7 1 1 Definition of register 5120 Bit Hex value Description Definition in ARC Sensors 0 LSB 0x01 CP1 Calibration Point 1 1 0x02 CP2 Calibration Point 2 2 0x04 CP3 not available i si not available 5 0x20 CP6 Product Calibration 6 0x40 CP7 not available 7 MSB 0x80 CP8 not available Figure 2 7 1 2 Bitwise definition of CP1 to CP8 Command Available cali points Modbus address 5120 Length 2 Type 3 Read Parameter Points Format Hex Value 0x23 Figure 2 7 1 3 Example to read the available CPs 0x23 0x01 CP1 0x02 CP2 0x20 CP6 Standard Calibration at 2 calibration points 200 gt E 150 100 N gt A 50 amp D T 0 5 E 3 50 En 5 100 150 v 200 i 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 pH value Figure 2 7 1 4 pH ARC Sensors allow 3 calibration points CP1 and CP2 are used for standard calibration s
72. lla 66 624300 01 page 3 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 1 Modbus RTU general information 1 1 Introduction This document describes in detail the pH ARC Sensors Modbus RTU interface It is addressed to software programmers The general information about Modbus command structures and its implementation in the HAMILTON ARC Sensor family is described in detail in Chapter 1 of the VISIFERM DO Modbus RTU Programmer s Manual p n 624179 01 If you need this general information about Modbus programming then please consult p n 624179 01 In the present manual only the specific command structure for the pH ARC Sensors is described It is valid for the firmware version EPHUMO11 Please check the software version by reading register 1032 This present definition of the command structure is an additional document to the Operating Instructions of the specific pH ARC Sensors Before reading this manual the operating instructions of the sensors should be read and understood 624300 01 page 4 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 pH ARC Sensor Commands in Modbus RTU 2 1 General In order to communicate with a pH ARC Sensor over Modbus RTU protocol a Modbus master terminal application software is needed The Modbus RTU is an open standard and a number of free and commercial application toolkits are available This manual contains examples
73. ment 0x08000000 The last successful calibration has been performed at pH 4 01 The initial measurement in this case was successful The sensor is still running on its prior standard calibration until a valid calibration value has been assigned to this initial measurement values 2 7 4 2 2 Product calibration Assignment Calibration status after invalid assignment Command Calibration status CP6 Modbus address 5318 Length 6 Type 3 Read Parameter Status Unit Value Format Hex Hex Float Value 0x0A000000 0x00001000 4 01 Figure 2 7 4 2 2 1 Example to read the calibration status of CP6 after having performed a valid initial measurement at CP6 and an invalid assignment The status says CP6 out of range 0x02000000 and CPE initial measurement 0x08000000 The last successful calibration has been performed at pH 4 01 The initial measurement in this case is still valid and available for further assignment of a product calibration value The here performed assignment was not successful The sensor remains running on its prior standard calibration Calibration status after valid assignment Command Calibration status CP6 Modbus address 5318 Length 6 Type 3 Read Parameter Status Unit Value Format Hex Hex Float Value 0x14000000 0x00001000 4 5 Figure 2 7 4 2 2 2 Example to read the calibration status of CP6 after having performed an initial
74. nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 5 2 2 1 Reading Setting Operator Level ann 5 2 2 2 Changing Passwords for Operator Level 6 2 3 CONFIGURATION OF THE SERIAL RS485 INTERFACE 7 2 3 1 Device Address uuuuuuussssnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 7 2 3 2 Baud Rate aaa 8 2 4 CONFIGURATION OF THE ANALOG INTERFACES ueunusesssnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 9 2 4 1 Available Analog Interfaces nn 9 2 4 2 Available Analog Interface Modes nn 9 2 4 3 Description of the Analog Interfaces 1 and 2 nenn 10 2 4 4 Selection of an Analog Interface Mode 10 2 4 5 Configuration of the 4 20 MA Interface 11 2 4 6 Reading the Internally Measured Output Current 17 2 5 MEASUREMENT Sn ernennen N 18 2 5 1 Definition of Measurement Channels and Physical Units nennen 18 2 5 2 Primary Measurement Channel 1 pH nn 20 2 5 3 Primary Measurement Channel 6 Temperature 22 2 5 4 Definition of the Measurement Status for PMC1 PMC6 23 2 5 5 Secondary Measurement Channels 1 16 24 2 6 CONFIGURATION OF THE MEASUREMENT 26 2 6 1 Available P rameterse een iii 26 2 6 2 PAS Moving Average lariana liaison 27 2 6 3 PA
75. nsor s quality indicator The sensor s quality indicator is influenced by e Offset a pH 7 e Slope e Errors 624300 01 page 63 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 9 Sensor Identification and Information 2 9 1 General Information General information about the sensor is available as shown in the figure below Start Number of Regi Reg8 Example of content Modbus Read Write register registers 16 ASCII characters function access access code 1024 8 Userend FW Date 2010 04 28 3 4 U A S none 1032 8 Userend FW EPHUMO11 3 4 U A S none 1040 8 Userend BL Date 2009 09 18 3 4 U A S none 1048 8 Userend BL BLOUX012 3 4 U A S none 1056 8 Userend P N 242822 01 3 4 U A S none 1064 8 Userend S N not available 3 4 U A S none 1072 8 Userend space holder not available 3 4 U A S none 1080 8 Userend space holder not available 3 4 U A S none 1088 8 Frontend FW Date 2009 09 16 3 4 U A S none 1096 8 Frontend FW EPHFI010 3 4 U A S none 1104 8 Frontend BL Date not available 3 4 U A S none 1112 8 Frontend BL not available 3 4 U A S none 1120 8 Frontend P N 242828 00 3 4 U A S none 1128 8 Frontend S N not available 3 4 U A S none 1136 8 Frontend space holder not available 3 4 U A S none 1144 8 Frontend space holder not available 3 4 U A S none Figure 2 9 1 1 D
76. o different calibration status registers can be read e Register 5158 for CP1 e Register 5190 for CP2 A Note Registers 5158 and 5190 contain the same information Bit Hex value Definition 0 LSB 0x00000001 CP1 difference between CP1 and CP2 lt pH 1 0 0x00000002 CP1 no matching calibration standard 0x00000004 CP1 actual temperature reading is too low 0x00000008 CP1 actual temperature reading is too high 0x00000010 CP1 temperature reading during calibration is not stable 0x00000040 CP1 offset a pH 7 is too high or slope is too high 0x00000080 CP1 pH reading during calibration is not stable 0x00000100 CP2 difference between CP2 and CP1 lt pH 1 0 1 2 3 4 5 0x00000020 CP1 offset a pH 7 is too low or slope is too low 6 7 8 9 0x00000200 CP2 no matching calibration standard 10 0x00000400 CP2 actual temperature reading is too low 11 0x00000800 CP2 actual temperature reading is too high 12 0x00001000 CP2 temperature reading during calibration is not stable 13 0x00002000 CP2 offset a pH 7 is too low or slope is too low 14 0x00004000 CP2 offset a pH 7 is too high or slope is too high 15 0x00008000 CP2 pH reading during calibration is not stable beg not available 24 0x01000000 CPE out of calibration range 25 0x02000000 CP6 out of range 26 0x04000000 CP6 active
77. or AO2 Figure 2 4 5 1 1 Definition of register 4362 4490 For the definition of the Primary Measurement Channels PMC see chapter 2 5 Code Primary Measurement Channel PMC Hex 0x01 PMC1 pH not available 0x20 PMC6 temperature Figure 2 4 5 1 2 Code for selection of the primary measurement channel Command Available PMC AO1 Modbus address 4362 Length 2 Type 3 Read Parameter Available PMC 20 mA Format hex Value 0x21 Figure 2 4 5 1 3 Example to read the available Primary Measurement Channels PMC for AO1 The hexadecimal value of 0x21 defines that PMC1 pH or PMC6 temperature can be mapped to AO1 Register 4490 contains the same value 0x21 Accordingly PMC1 or PMC6 can be mapped to AO2 as well 2 4 5 2 Selecting the Primary Measurement Channel to be Mapped to the Analog Interface Start Number of Regi Reg2 Modbus Read Write register registers function code access access 4364 2 Selected PMC for AO1 3 4 16 U A S S 4492 2 Selected PMC for AO2 3 4 16 U A S S Figure 2 4 5 2 1 Definition of register 4364 4492 Only one bit can be set Command Active PMC AO1 Modbus address 4364 Length 2 Type 3 Read Parameter Current PMC 20mA Format hex Value 0x01 Figure 2 4 5 2 2 Example to read the current primary measurement channel mapped to AO1 defined in register 4364 The value 0x01 is returne
78. perature number of calibrations and operating hour upon calibration Start Number Reg1 Reg2 Regs Reg5 Reg7 Modbus Read Write register of Reg4 Reg6 Reg8 function access access registers code 5164 8 Unit of Value of Number of Operating 3 4 U A S none temperature for temperature calibrations hour for CP1 bitwise of CP1 at CP1 CPI defined 5196 8 Unit of Value of Number of Operating 3 4 U A S none temperature for temperature calibrations hour for CP2 bitwise of CP2 at CP2 CP2 defined 5324 8 Unit of Value of Number of Operating 3 4 U A S none temperature for temperature calibrations hour for CP6 bitwise of CP6 at CP6 CP6 defined Figure 2 7 5 1 Definition of register 5164 for CP1 5196 for CP2 and 5324 for CP6 Command Calibration CP1 values Modbus address 5164 Length 8 Type 3 Read Parameter Unit of temperature Temperature Number of cali i Operating hour Value 0x00000004 i 24 35184 Figure 2 7 5 2 Example to read the calibration values for CP1 The physical unit is C 0x00000004 the temperature is 24 35184 C the number of calibrations at CP1 is 6 and the operating hour is 23 78 h Command Calibration CP2 values Modbus address 5196 Length 8___Type 3 Read Unit of temperature Temperature Number of cali i Operating hour 0x00000004 24 37691 5 Figure 2 7 5 3 Example
79. port CP1 incorrect measurement unit or CP2 incorrect measurement unit see figure 2 7 4 1 1 Command Calibration limits CP 1 Modbus address 5152 Length 6 Type 3 Read Parameter Unit Min value Max value Format Hex Float Float Value 0x01000 0 0 Figure 2 7 2 1 2 Example to read the limits of CP1 Currently active physical unit is pH 0x01000 The min and max values are both 0 indicating that calibration at CP1 can be performed only using defined calibration standards having discrete pH values Command Calibration limits CP2 Modbus address 5184 Length 6 Type 3 Read Parameter Unit Min value Max value Format Hex Float Float Value 0x01000 0 0 Figure 2 7 2 1 3 Example to read the limits of CP2 The active physical unit is is pH 0x01000 The min and max values are both 0 indicating that calibration at CP2 can be performed only using defined calibration standards having discrete pH values When initiating the calibration at CP1 and CP2 the measured pH and temperature have to be stable for at least 3 minutes The stability criteria are defined in register 5128 Start Number of Regi Reg2 Regs Reg4 Modbus Read Write register registers Float Float function code access access 5128 4 Max Drift PMC1 Max Drift PMC6 3 4 16 U A S S pH Temperature pH min K min Figure 2 7 2 1 4 Definit
80. product calibration is available in the sensor s memory see figure 2 7 4 1 1 2 7 3 2 5 Product calibration Restore product calibration If a valid but inactivated product calibration is available in the sensors memory the calibration status is reading CP6 assigned corresponding to 0x10000000 see figure 2 7 4 1 1 this stored product calibration can be restored or reactivated by writing command 0x04 to register 5340 Command CP6 Restore product Modbus address 5340 Length 2 Type 16 Write Parameter Command Format Hex Value 0x04 Figure 2 7 3 2 5 1 Example to restore an available product calibration from an active standard calibration Writing command 0x04 restore product calibration to register 5340 From now on the sensor is measuring using its prior CP6 product calibration The sensors calibration status register 5318 will be reading 0x14000000 corresponding to CP6 assigned and CP6 active see figure 2 7 4 1 1 again If this command is performed without available product calibration in the sensor s memory the sensor will respond with a Modbus exception since this command is not valid 624300 01 page 43 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 7 4 Reading the Calibration Status 2 7 4 1 Reading the Calibration Status of CP1 and CP2 A standard calibration is not always successful In order to analyze what has gone wrong tw
81. rature 6 0x000040 SMC1 R glass 7 0x000080 SMC2 R reference 8 0x000100 SMC3 R auxiliary 9 0x000200 SMC4 E pH vs ref 10 0x000400 SMC5 E SG vs ref 11 0x000800 SMC6 E aux vs ref 12 0x001000 SMC7 E reference 13 0x002000 SMC8 pH act 14 0x004000 SMC9 T act 15 0x008000 SMC10 not available 21 MSB 0x200000 SMC16 not available Figure 2 5 1 1 full list of PMC1 to 6 and SMC1 to 16 In Register 2048 the available PMC and SMC are defined for a specific pH ARC Sensors and a specific operator level Start Number of Regi Reg2 Modbus Read Write register registers function code access access 2048 2 Available measurement channels 3 4 U A S none PMC and SMC bitwise set Figure 2 5 1 2 Definition of register 2048 Command Avail PMC and SMC Modbus address 2048 Length 2 Type 3 Read Parameter Avail PMC and SMC Format Hex Value Ox06E1 Figure 2 5 1 3 Example to read Reg 2048 for Polilyte Plus ARC In case of operator A U the value 0x06E1 is returned In other words the following PMC and SMC are available to A U PMC1 PMC6 SMC1 SMC2 SMC4 SMC5 In case of operator S the value 0x066E1 is returned In other words the following PMC and SMC are available to S PMC1 PMG6 SMC1 SMC2 SMC4 SMC5 SMC8 SMC9 624300 01 page 18 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 The pH ARC Sensor
82. register 5340 are defined as follows Code Hex Definition of commands 0x01 Perform initial measurement 0x02 Cancel an active product calibration 0x03 Restore a standard calibration from an active product calibration 0x04 Restore a product calibration from an active standard calibration Figure 2 7 3 2 2 Definition of the commands related to the product calibration Start Number of Reg1 Reg2 Modbus Read Write register registers function code access access 5340 2 Code as defined in Figure 2 7 3 2 2 3 4 16 A S A S Figure 2 7 3 2 3 Definition of register 5340 2 7 3 2 1 Product calibration Initial measurement Upon process sample collection for laboratory analysis the command for initial measurement is sent to the sensor This is achieved by writing the command 0x01 to register 5340 which performs the initial measurement and stores the corresponding measurement values in the sensor Command CP6 Initial measurement Modbus address 5340 Length 2 Type 16 Write Parameter Command Format Hex Value 0x01 Figure 2 7 3 2 1 1 Example to start the product calibration procedure Writing the command code 0x01 initial measurement to the CP6 command register 5340 After successful initial measurement the corresponding calibration status register 5318 figure 2 7 4 2 1 is CP6 initial measurement 0x08000000 see figure 2 7 4 1 1 T
83. ser The password 0 has to be sent Command Operator level Modbus address 4288 Length 4 Type 16 Write Parameter Operator level Password Format Hex decimal Value 0x0C 18111978 Figure 2 2 1 6 Example to set the active operator level to OxC Administrator The correct password has to be sent Command Operator level Modbus address 4288 Length 4 Type 16 Write Parameter Operator level Password Format Hex decimal Value 0x0B 18111978 Figure 2 2 1 7 Example for a Modbus error If the level or the password is not correct Operator level 0x0B the sensor answers with a Modbus error message Slave device exception response see chapter 1 6 2 2 2 Changing Passwords for Operator Level The passwords for accessing the operator levels A and S can be modified by S Specialist only U User and A Administrator have no right to change any password The new password will remain stored after power down Start Number of Regi Reg2 Regs Reg4 Modbus Read Write register registers function code access access 4292 4 Level New password 16 None S Figure 2 2 2 1 Definition of register 4292 Command Password Modbus address 4292 Length 4 Type 16 Write Parameter Operator level Pass number Format Hex Decimal Value 0x30 12345678 Figure 2 2 2 2 Example to set the Password of operator level S code 0x30 to 12345678
84. ss access 3456 8 Description of PA12 3 4 U A S none Figure 2 6 3 1 1 Definition of register 3456 Command Moving average text Modbus address 3456 Length 8 Type 3 Read Parameter Text Format Character Value Moving average R Figure 2 6 3 1 2 Example to read the description for Moving average R 2 6 3 2 Selecting the Physical Unit and Writing the Value for PA12 In register 3464 the available physical units for PA12 are defined Start Number of Reg1 Reg2 Modbus Read Write register registers bitwise defined function code access access 3464 2 Available physical units for PA12 3 4 U A S none Figure 2 6 3 2 1 Definition of register 3368 Command Moving average av units Modbus address 3464 Length 2 Type 3 Read Parameter Units Format Hex Value 0x01 Figure 2 6 3 2 2 Example to read the available physical units for PA12 The only one available here is none 0x01 For the definition of the physical units see chapter 2 5 1 Start Number of Regi Reg2 Regs Reg4 Modbus Read Write register registers bitwise defined function code access access 3466 4 Select physical unit Value for PA12 16 none S for PA12 1 16 default 4 Figure 2 6 3 2 3 Definition of register 3466 Only one bit for the physical unit can be set PA12 can be set to the values 1 16 624300
85. ss to the individual SMC depends on the operator level The available SMC are defined in register 2048 according to the selected operator level and the sensor type see chapter 2 5 1 2 5 5 1 Description of SMC The registers defined here give a plain text ASCII description of each available SMC Start Number of Regi Reg8 Modbus Read Write register registers 16 ASCII characters function code access access Address 8 Description of each SMC 3 4 U A S none Figure 2 5 5 1 1 Definition of registers at Address Description Address Plain Text Description 16 ASCII SMC1 2464 R glass Resistance of the pH glass SMC2 2496 R reference Resistance of the reference electrode SMC3 2528 R auxiliary Resistance of the auxiliary electrode SMC4 2560 E pH vs ref Electrical potential between glass and reference electrode SMC5 2592 E SG vs ref Electrical potential between solution ground and reference electrode SMC6 2624 E aux vs ref Electrical potential between auxiliary electrode and reference electrode SMC7 2656 E reference Electrical potential between reference electrode and electrical ground SMC8 2688 pH act Current pH value 3 seconds reading SMC9 2720 T act Current T value 3 seconds reading Figure 2 5 5 1 2 Full list of starting register addresses for the plain text ASCII description of each SMC Example Command SMC 1 text Modbus
86. t operating temperature temperature h h Format Float Float Float Value 168 3667 0 0 Figure 2 8 2 2 Example to read the total operating hours the operating hours above the max measurement temperature and the operating hours above the max operating temperature Command Power amp watchdog Modbus address 4682 Length 6 Type 3 Read Parameter Number of Power Number of Number of Writing ups Watchdog resets cycles to flash memory Format Decimal Decimal Decimal Value 34 1 16 Figure 2 8 2 3 Example to read the number of power ups the number of watchdog resets and the number of writing cycles to flash memory Command SIP amp CIP Modbus address 4688 Length 4 Type 3 Read Parameter SIP cycles CIP cycles Format Decimal Decimal Value 0 0 Figure 2 8 2 4 Example to read the number of SIP cycles and the number of CIP cycles For the definition of SIP and CIP cycles see chapter 2 8 5 624300 01 page 58 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 8 3 Warnings A Warning is a notification message which still allows further functioning of the system This message alerts the operator of a possible problem that could lead to uncertain results 2 8 3 1 Currently Active Warnings The currently active warnings are stored in register 4736 Start Number of Regi Regs Reg5 Reg7 Modbus Read
87. ter 1968 624300 01 page 19 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 5 2 Primary Measurement Channel 1 pH 2 5 2 1 Description of PMC1 In register 2080 a plain text ASCII description of PMC1 is given Start Number of Regi Reg8 Modbus Read Write register registers 16 ASCII characters function code access access 2080 8 Description of PMC1 3 4 U A S none Figure 2 5 2 1 1 Definition of register 2080 Command PMC 1 text Modbus address 2080 Length 8 Type 3 Read Parameter Text Format Character Value pH Figure 2 5 2 1 2 Example to read the description It is pH 2 5 2 2 Selecting the Physical Unit for PMC1 In register 2088 the available physical units for this channel are defined Start Number of Reg1 Reg2 Modbus Read Write register registers bitwise defined function code access access 2088 2 Available physical units of PMC1 3 4 U A S none Figure 2 5 2 2 1 Definition of register 2088 Command PMC1 available units Modbus address 2088 Length 2 Type 3 Read Parameter Units Format Hex Value 0x201000 Figure 2 5 2 2 2 Example to read the available physical units of PMC1 pH 0x001000 mV 0x200000 total 0x201000 In register 2090 the active physical unit for this channel can be selected by choosing one of
88. th code 5 2 3 2 2 Reading the Baud Rate Limits The baud rate limits can be read in register 4104 Start Number of Regi Reg2 Regs Reg4 Modbus Read Write register registers function code access access 4104 4 Min Baud rate Max Baud rate 3 4 U A S none code code Figure 2 3 2 2 1 Definition of register 4104 Command Com baud limits Modbus address 4104 Length 4 Type 3 Read Parameter Min Baud rate code Max Baud rate code Format Decimal Decimal Value 2 7 Figure 2 3 2 2 2 Example to read the baud rate code limits Min 2 Max 7 see Figure 2 3 2 1 2 HAMILTON 624300 01 page 8 67 pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 4 Configuration of the Analog Interfaces 2 4 1 Available Analog Interfaces A pH ARC Sensor has two individual physical analog interfaces that have identical functionalities but can be configured independently from each other e Analog Output Interface 1 AO1 e Analog Output Interface 2 AO2 The number of analog interfaces is defined in register 4320 Start Number of Reg1 Reg2 Modbus Read Write register registers function code access access 4320 2 Available analog interfaces 3 4 U A S none Figure 2 4 1 1 Definition of register 4320 Command Avail analog interfaces Modbus address 4320 Length 2 Type 3 Read Parameter Available analog interfaces Format Hex Value 0x
89. the physical units that are defined in register 2088 Start Number of Reg1 Reg2 Modbus Read Write register registers bitwise defined function code access access 2090 2 Selected active physical unit for the 16 none S PMC1 Figure 2 5 2 2 3 Definition of register 2090 Only one bit can be set Command PMC1 set unit Modbus address 2090 Length 2 Type 16 Write Parameter Unit Format Hex Value 0x1000 Figure 2 5 2 2 4 Example to set the physical unit of PMC1 to pH 0x1000 A Attention Changing the physical unit has also an influence on the output of AO1 AO2 as the same physical unit is active for the analog outputs All limits of the 4 20 mA analog output have to be redefined after changing the physical unit 624300 01 page 20 67 HAMILTON 2 5 2 3 Reading the measurement value of PMC1 pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 Register 2090 is also used to read the measurement values of PMC1 Start Num Regi Regs Reg5 Reg7 Reg9 Modbus Read Write reg ber of Reg2 Reg4 Reg6 Reg8 Reg10 function access access reg code 2090 10 Selected Measure Measure Min Max 3 4 U A S none physical ment ment allowed allowed unit value of status value value PMC1 Figure 2 5 2 3 1 Definition of register 2090 Me
90. the calibration status 77 CP1 after calibration CP1 at 0 auto All bits of CP1 are zero 0x00000000 indicating that the calibration was successful The physical unit of the last calibration is pH 0x00001000 and the assigned pH value is 4 01 at 25 C Example to read the calibration status of CP2 Command Calibration status CP2 Modbus address 5190 Length 6 Type 3 Read Figure 2 7317 Example to read the calibration status of CP2 after calibrating CP2 at 0 auto All bits of CP2 are zero 0x00000000 indicating that the calibration was successful The physical unit of the last calibration is pH 0x00001000 and the pH value is 7 Example to calibrate at CP1 with manual selection of the calibration standard Command Make calibration CP1 Modbus address 5162 Length 2 Type 16 Write Figure 2 7318 Example to start the calibration at CP1 by means of manually selecting the calibration standard HAMILTON DURACAL 4 01 nominal value 4 01 The operator knows from the certificate of the specific production lot that the actual pH value is 4 00 624300 01 page 38 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 Example to read the sensor s quality indicator Command Quality indicator ___Modbus address 4872 Length 2 Type 3 Read 2 7 3 2 Calibration at CP6 Product Calibration The product calibration is a process in order to adjust the measur
91. the sensor tries to assign the measured electrical potential to one of the calibration standards available for automatic calibration Manual selection enter the actual pH value at 25 C the value must be within the tolerance range of the nominal value of one of the calibration standards available for manual selection Step 5 Read the calibration status see chapter 2 7 4 Step 6 Check the pH ARC Sensor s quality indicator 624300 01 page 37 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 Examples Definitions of register 5158 and 5190 used in these examples are given in chapter 2 7 4 1 those for register 4872 in chapter 2 8 6 Example to calibrate at CP1 with automatic recognition Command Make calibration GER Modbus address 5162 Length 2 Type 16 Write Figure 2 7 3 1 4 Example to start the calibration at CP1 setting a value of 0 for automatic recognition of the calibration standard Example to calibrate at CP2 with automatic recognition Command Make calibration CP2 Modbus address 5194 Length 2_ Type 16 Write Figure 2 7 3 1 5 Example to start the calibration at CP2 setting a value of 0 for automatic recognition of the calibration standard Example to read the calibration status of CP1 Command Calibration status CP1 _ Modbus address 5158 Length 6 Type 3 Read Parameter Status Unit Value Figure 2 731 6 Example to read
92. ue is pH 0 and the max value is pH 14 Note the definition of min and max is different than the one for CP1 CP2 because CP6 can be set to any pH value HAMILTON 624300 01 page 34 67 pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 7 3 Calibration Procedure 2 7 3 1 Calibration at CP1 and CP2 Standard Calibration The ARC Sensor family has a unique calibration routine When initiating the calibration the data set of the sensor is automatically traced back within the last 3 minutes and a decision is made immediately if the calibration is successful or not The operator therefore gets an immediate result The criteria for a successful calibration are e the stability of pH value and temperature over the last 3 minutes see register 5128 e the currently measured pH value fits to one of the calibration standards defined in the selected set of calibration standards e the limits of slope and offset at pH 7 have to be met Standard Calibration at 2 calibration points 200 150 100 50 0 100 150 electrical potential glass vs ref mV 200 11 12 13 14 pH value Figure 2 7 3 1 1 Standard Calibration using CP1 and CP2 CP1 and CP2 define a linear relationship between the electrical potential and the pH value This linear calibration function is defined by an offset at pH 7 mV and a slope mV pH These two values are stored in register 54
93. ut 3 4 U A S none measurement measurement bilinear for value for AO1 values for AO1 measurement mA mA values for AO1 mA 4498 6 Min output for Max output for Mid output 3 4 U A S none measurement measurement bilinear for value for AO2 values for AO2 measurement mA mA values for AO2 mA Figure 2 4 5 4 1 Definition of register 4370 4498 Command MinMaxMid current AO1 Modbus address 4370 Length 6 Type 3 Read Parameter Min current mA Max current mA Mid current mA Format Float Float Float Value 4 20 12 Figure 2 4 5 4 2 Example to read the min max and mid output current for measurement values for AO1 They are fixed to 4 20 and 12 mA The same values are stored in register 4498 for AO2 Note Mid current must always be defined However in linear output mode the mid current value has no physical meaning and will not affect the 4 20 mA output 624300 01 page 12 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 4 5 5 Reading the Selected Physical Unit for Analog Interface Start Number of Reg1 Reg2 Modbus Read Write register registers function code access access 4376 2 Selected physical unit of AO1 3 4 U A S none see chapter 2 5 1 4504 2 Selected physical unit of AO2 3 4 U A S none see chapter 2 5 1 Figure 2 4 5 5 1 Definition of register
94. x0 Figure 2 4 2 3 Example to read register 4322 all modes defined in figure 2 4 2 2 are available for both AO1 and AO2 624300 01 page 9 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 4 3 Description of the Analog Interfaces 1 and 2 Register 4352 4480 contain the descriptions of AO1 AO2 as plain text ASCII Start Number of Reg1 Reg8 Modbus Read Write register registers 16 ASCII characters function code access access 4352 8 Description of AO1 3 4 U A S none 4480 8 Description of AO2 3 4 U A S none Figure 2 4 2 1 Definition of register 4352 and 4480 Command Current interface text Modbus address 4352 Length 8 Type 3 Read Parameter Text Format Character Value mA interface 1 Figure 2 4 2 2 Example to read the description of AO1 The text is mA interface 1 Accordingly AO1 is physically configured as a 4 20 mA current output Command Current interface text Modbus address 4480 Length 8 Type 3 Read Parameter Text Format Character Value mA interface 2 Figure 2 4 2 3 Example to read the description of AO2 The text is mA interface 2 Accordingly AO2 is physically configured as a 4 20 mA current output A Attention e pHARC Sensors do not have an ECS in contrast to VISIFERM DO e Data structure register address offset between AO1 and AO2 is alwa
95. ys 128 2 4 4 Selection of an Analog Interface Mode The analog interface mode of AO1 AO2 is selected by programming the analog interface mode in register 4360 4488 Start Number of Regi Reg2 Modbus Read Write register registers function code access access 4360 2 Active analog interface mode for AO1 3 4 16 U A S S 4488 2 Active analog interface mode for AO2 3 4 16 U A S S Figure 2 4 4 1 Definition of register 4360 4488 Only one bit can be set Command Active interface mode Modbus address 4360 Length 2 Type 16 Write Parameter Mode Format Hex Value 0x02 Figure 2 4 4 2 Example to set the analog interface mode of AO1 to 0x02 4 20 mA linear output 624300 01 page 10 67 HAMILTON pH ARC Sensors Modbus RTU Programmer s Manual EPHUMO11 2 4 5 Configuration of the 4 20 mA Interface Note The configuration of AO1 AO2 is only effective if register 4360 4488 active analog interface mode is set to the value 0x01 0x02 or 0x04 2 4 5 1 Reading the Available Primary Measurement Channels to be Mapped to the Analog Output Start Number of Reg1 Reg2 Modbus Read Write register registers function code access access 4362 2 Available Primary Measurement Channels 3 4 U A S none for AO1 4490 2 Available Primary Measurement Channels 3 4 U A S none f

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