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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