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Hamilton Electronics EPHUM011 User Manual

Page 53

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pH ARC Sensors Modbus RTU Programmer

s Manual (EPHUM011)

624300/01

page 53 / 67

Register 9528 defines for the selected set of calibration standards:

 the available calibration standards for manual selection of the pH value

 the available calibration standards for automatic recognition of the pH value

Start
register

Number of
registers

Reg1 / Reg2
(Bit, see figure 2.7.10.2.8)

Modbus
function code

Read
access

Write
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

Type:

3

Read

Parameter:

Standard fields

Format:

Hex

Value:

0x0FFF0FFF

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 0x0FFF0FFF says that (for the selected set of calibration
standards):
 all 12 calibration standards are available for manual calibration

 all 12 calibration standards are available for automatic recognition.

Bit

Hex code

Index of Calibration
Standard within the
selected set

Calibration type

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

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