Hamilton Electronics EPHUM011 Primary Measurement Channel 1 pH, Description of PMC1, 0x201000

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

2.5.2Primary Measurement Channel 1 (pH)

2.5.2.1Description of PMC1

In register 2080, a plain text ASCII description of PMC1 is given.

Start	Number of			Reg1 … 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”.

2.5.2.2Selecting 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 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).

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!

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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 InformationEPHUM011 IntroductionVisiferm do Modbus RTU Programmer’s Manualp/n 624179/01 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 the Baud Rate Limits Baud RateReading and Writing the Baud Rate 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 #20x01 Configuration of the 4-20 mA Interface0x21 PH ARC Sensors Modbus RTU Programmer’s Manual EPHUM011 Defining the Measurement Values for 4, 12 and 20 mA Output Reading the Selected Physical Unit for Analog Interface0x001000 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 0x2010000x200000 175.9922 0x00 954.6541 Reading the measurement value of PMC10x1000 02503 0x00 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 Selecting the Physical Unit and Writing the Value for PA12 3 PA12 Moving Average RDescription of PA12 Moving Average R 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 CP2Reading the Calibration Status of CP6 Product Calibration 0x00000080 0x000010000x00000180 0x00001000 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 168.3667Definition of Warnings Currently Active WarningsHistory of Warnings History of Errors ErrorsCurrently Active Errors Definition of Errors CIP Reading Definition of SIP and CIPSIP Reading the Sensor’s Quality Indicator 120 130Sensor Identification and Information General InformationSensor Identification EPHFI010Freeuserspace Free User Memory Space0001001 System Commands Recall Sensor’s Factory SettingsHello World 732255PH ARC Sensors Modbus RTU Programmer’s Manual EPHUM011