Configurations - Siemens QSA2700D Basic Documentation

Configurations

4
Modbus configuration parameters
4 Configurations
4.1 Modbus configuration parameters
4.2 Modbus registers
12 | 26
Siemens
The sensor is a Modbus (RS485) slave device, configurable via a Modbus master.
Name
Configurable Address
Baud rate (bps)
Transmission format
Basic Parity
Stop bits
Connection
Data
Identity
Cable length
Holding Name
Register No.
257 PM2.5 value
258 PM10 value
260 Sensor working status
296 Software version
297 Software version
298 Software version
764 Modbus address
765 Baud rate
766 Transmission format (start
bit – data bits – parity –
stop bit)
768 Bus configuration
command
Range / Enumeration
1...247
1 = 9600 / 2 = 19200/
3 = 38400 / 4 = 57600
0 = 1-8-E-1 / 1 = 1-8-O-1 /
2 = 1-8-N-1 / 3 = 1-8-N-2
Even / Odd / No
1 / 2
<= 32pcs/line
8 bits (0-255)
Slave
<600m
Description Default
Range: 0...500
Range: 0...500
0: Normal;
1: Replace sensor
module;
2: Communication
error
Major version
Minor version
Build version
1...247 1
1= 9600bps / 2 = 2
19200bps / 3 =
38400bps / 4 =
57600bps
0 = 1-8-E-1 / 1 = 1- 0
8-O-1 / 2 = 1-8-N-1
/ 3 = 1-8-N-2
0 = Ready / 1 = 0
Load / 2 = Discard
Default
1
19200
0
Even
1
R/W
R
R
R
R
R
R
R / W
R / W
R / W
R / W
A6V11160936_en--_a
2017-12-01