Hamilton Electronics EPHUM011 manual Introduction

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pH ARC Sensors Modbus RTU Programmer’s Manual (EPHUM011)

1 Modbus RTU general information

1.1Introduction

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:

EPHUM011

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

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Contents PH ARC Sensors Important Notice Configuration of the Serial RS485 Interface Configuration of the Analog InterfacesConfiguration of the Measurement Sensor Identification and InformationVisiferm do Modbus RTU Programmer’s Manualp/n 624179/01 IntroductionEPHUM011 Operator levels and Passwords Reading / Setting Operator LevelGeneral 0x03Changing Passwords for Operator Level 0x300x0C 18111978 0x0B 18111978Configuration of the serial RS485 Interface Device AddressReading and Writing the Device Address Reading the Device Address LimitsReading and Writing the Baud Rate Baud RateReading the Baud Rate Limits Configuration of the Analog Interfaces Available Analog InterfacesAvailable Analog Interface Modes 0x07Selection of an Analog Interface Mode Description of the Analog Interfaces 1MA interface #1 MA interface #20x21 Configuration of the 4-20 mA Interface0x01 PH ARC Sensors Modbus RTU Programmer’s Manual EPHUM011 0x001000 Reading the Selected Physical Unit for Analog InterfaceDefining the Measurement Values for 4, 12 and 20 mA Output PH ARC sensor 4-20mA inte rface linear Defining a Constant Current Output for Testing 0x010001 Reading the Internally Measured Output Current 99186 99742Measurement Definition of Measurement Channels and Physical UnitsSpecial Primary Measurement Channel 1 pH Description of PMC1Selecting the Physical Unit for PMC1 0x2010000x1000 02503 0x00 Reading the measurement value of PMC10x200000 175.9922 0x00 954.6541 Primary Measurement Channel 6 Temperature Description of PMC6Selecting the Physical Unit for PMC6 0x06Input of an Externally Measured Temperature Definition of the Measurement Status for PMC1 / PMC6Reading the measurement value of PMC6 0x04 24.35834 0x00 130Secondary Measurement Channels Description of SMCReading the measurement value of SMC 0x8000 247.56Configuration of the Measurement Available Parameters2 PA9 Moving Average Effect of Moving Average n=1 vs n=16Description of PA9 Moving Average Selecting the Physical Unit and Writing the Value for PA9Reading all Values for PA9 Description of PA12 Moving Average R 3 PA12 Moving Average RSelecting the Physical Unit and Writing the Value for PA12 Reading all Values for PA12 Calibration Available Calibration PointsDefinitions of Calibration Points Calibration Points 1 and 2 Standard CalibrationCP1 CP2Calibration Point 6 Product Calibration CP6Calibration Procedure Calibration at CP1 and CP2 Standard CalibrationPH ARC Sensors Modbus RTU Programmer’s Manual EPHUM011 Choose one of the calibration points CP1 or CP2 0x00000000 0x00001000 100 Calibration at CP6 Product Calibration200 Definition of the commands for product calibration Product calibration Initial measurementProduct calibration Cancel Product calibration AssignmentProduct calibration Restore standard calibration Product calibration Restore product calibrationReading the Calibration Status Reading the Calibration Status of CP1 and CP20x00000180 0x00001000 0x00000080 0x00001000Reading the Calibration Status of CP6 Product Calibration 0x01000000 0x00001000 0x08000000 0x000010000x0A000000 0x00001000 0x14000000 0x000010000x10000000 0x00001000 Currently active Calibration Parameters part 0x00000004 24.35184 23.780x00000004 24.37691 16.45 0x00000004 29.93368 379.5167003401 179.927 297.1378 006804 099747 296.690110469 298.3302 607782 59.47631 298.15Special Commands for Calibration with Visical Calibration Standards Available Sets of Calibration StandardsLSB 0x00000001 Set 0x0000003FDefinitions for Individual Sets of Calibration Standards 1800x0FFF0FFF 0x02480FFF 0x05540FFFDIN Nist StandardMettler Toledo Radiometer Temperature Ranges Sensor StatusOperating Hours and Counters 168.3667History of Warnings Currently Active WarningsDefinition of Warnings Currently Active Errors ErrorsHistory of Errors Definition of Errors SIP Reading Definition of SIP and CIPCIP Reading the Sensor’s Quality Indicator 120 130Sensor Identification and Information General InformationSensor Identification EPHFI0100001001 Free User Memory SpaceFreeuserspace System Commands Recall Sensor’s Factory SettingsHello World 732255PH ARC Sensors Modbus RTU Programmer’s Manual EPHUM011