11
Protocol setting:
Address, baud rate, parity and stop bits can be set via the configurator software (available on www.setra.com).
FLOAT (read register):
Register
address
Comm.
address
Parameter
name
30026
0x19
Temperature [°C],[°F]
30028
0x1B
Relative humidity [%]
6.5 Modbus setup
The measured values are saved as a 32 bit float value from 0x19 to 0x1B. Additionally, the
measured values can be read as 16 bit signed integer from 0x12C to 0x12D.
The factory setting for the Slave-ID is 245 as an integer 16Bit value. This ID can be customized
in the register 60001 (0x00) (value margin 1 - 247 permitted).
For Modus outputs the required units (metric or non-metric) must be selected in the “Ordering
guide”, see SRH200 data sheet.
INFO (read register):
Register
address
Comm.
address
Parameter
name
30001
0x00
Serial number (as ASCII)
30009
0x08
Firmware version
INTEGER (read register):
Register
address
Comm.
address
Parameter
name
30301
0x12C
Temperature [°C],[°F]
30302
0x12D
Relative humidity [%]
Note: Values are stored with a scaling of 1:100
(e.g.: 2550 is equivalent to 25.5°C)
INTEGER (write register):
Register
address
Comm.
address
Parameter
name
60001
0x00
Slave-ID (Modbus address)
60002
0x01
Modbus protocol settings
