Read/Write registers (function codes 0x3 and 0x10).
Writing to these registers has no effect on sensor settings until the user has written to the register 100. For
example, to update the Slave Address, the user must first write the desired address to register 20. Then the user
must also write to register 100 to save/store the new values.
Float Registers
16
17
slave address
18
19
model number*
20
21
serial number*
22
23
baudrate (0 = 115200, 1 = 57600, 2 = 38400, 3 = 19200, 4 = 9600, any other
number = 19200)
24
25
parity (0 = none, 1 = odd, 2 = even)
26
27
number of stopbits
28
29
multiplier*
30
31
offset*
32
33
immersion factor*
34
35
solar multiplier*
36
37
running average
38
39
heater status
Integer Registers
48
slave address
49
model number*
50
serial number*
51
baudrate (0 = 115200, 1 = 57600, 2 = 38400, 3 = 19200, 4 = 9600, any other
number = 19200)
52
parity (0 = none, 1 = odd, 2 = even)
53
number of stopbits
54
multiplier (shifted two decimal points to the left)*
55
offset (shifted two decimal points to the left)*
56
immersion factor (shifted two decimal points to the left)*
57
solar multiplier (shifted two decimal points to the left)*
58
running average
59
heater status
*Registers marked with an asterisk (*) cannot be written to unless a specific procedure is followed. Contact
Apogee Instruments to receive the procedure for writing these registers.
