Hamilton Electronics EPHUM011 User Manual
Page 53

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