Hamilton Electronics manual PH ARC Sensors Modbus RTU Programmer’s Manual EPHUM011

Page 12

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

2.4.5.3Reading the Minimum and Maximum Possible Physical Output Current

Start

Number of

Reg1 / Reg2

Reg3 / 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.

2.4.5.4Reading the Minimum, Maximum and Mid Current for Measurement Value Output

Start

Number of

Reg1 / Reg2

 

Reg3 / Reg4

Reg5 / Reg6

 

Modbus

Read

Write

register

registers

 

 

 

 

 

 

 

 

 

 

function

access

access

 

 

 

 

 

 

 

 

 

 

 

 

 

code

 

 

 

 

4370

6

 

Min output for

 

Max output for

Mid output

 

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

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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 InformationIntroduction Visiferm do Modbus RTU Programmer’s Manualp/n 624179/01EPHUM011 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 LimitsBaud Rate Reading and Writing the 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 #2Configuration of the 4-20 mA Interface 0x210x01 PH ARC Sensors Modbus RTU Programmer’s Manual EPHUM011 Reading the Selected Physical Unit for Analog Interface 0x001000Defining 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 0x201000Reading the measurement value of PMC1 0x1000 02503 0x000x200000 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 3 PA12 Moving Average R Description of 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 CP20x00000080 0x00001000 0x00000180 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 168.3667Currently Active Warnings History of WarningsDefinition of Warnings Errors Currently Active ErrorsHistory of Errors Definition of Errors Reading Definition of SIP and CIP SIPCIP Reading the Sensor’s Quality Indicator 120 130Sensor Identification and Information General InformationSensor Identification EPHFI010Free User Memory Space 0001001Freeuserspace System Commands Recall Sensor’s Factory SettingsHello World 732255PH ARC Sensors Modbus RTU Programmer’s Manual EPHUM011
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