Data Sheet for Product

11
Siemens
A6V11396712
Smart Infrastructure
2020-08-17
Holding
Register
(16-bit)
No.
Name
Description
Default
R/W
765
Baud rate
1= 9600bps;
2 = 19200bps;
3 = 38400bps;
4 = 57600bps
2
R/W
766
Transmission format (start bit –
data bits – parity – stop bit)
0 = 1-8-E-1;
1 = 1-8-O-1;
2 = 1-8-N-1;
3 = 1-8-N-2
0
R/W
768
Bus configuration command
0 = Ready;
1 = Load;
2 = Discard
0
R/W
Remarks:
● The register number is counted from 1.
● The precondition for valid displays of temperature (register 217) and r.h. (register 218) is
shown below:
– Register 221 is enabled.
– Display value PM2.5 & PM10 in μg/m
3
is selected as display format.
– Register values are transmitted from the master.
● In the case of a multiple writing command from the master with invalid values, the sensor
rejects the command with an error notice. The register values remain unchanged.
● Bus configuration command (768) is for on-event addressing only.
● Software version format: major version is 1 byte, minor version is 1 byte and build
version is 2 bytes, such as [2.01.33] = 0x02010021.