Register
address
Variable
Range
Bytes
Format
Config
values
0
Modbus default
1
0 - 1…read
1…write
2
unsigned int
1
Modbus device
address
1 to 247
2
RS-485 baud rate
1…1200 baud
2…2400 baud
3…4800 baud
4…9600 baud
5…19200 baud
6…38400 baud
7…57600 baud
8…115200 baud
3
RS-485 parity/
stop bits
1…no parity, 1 stop bit
2…no parity, 2 stop bits
3…even parity, 1 stop
bit
4…odd parity, 1 stop bit
Table 23
Holding registers
Report slave ID
The Modbus function 17 (report slave ID, read only) can be used to read basic information of the
USH-9. The following example shows the response of function 17 of a RG-30 sensor, which is received
in hex-format:
EXAMPLE
23 11 26 53 FF 27 74 20 53 6F 6D 6D 65 72 20
20 52 47 2D 33 30 20 20 20 32 5F 37 31 72 30 31 20 34
35 31 35 31 38 32 31 00 BB D4
1
Writing "1" sets the Modbus default settings.
1
2
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Manual
