Serial
Setting Description
Enable > Tick checkbox to enable / disable serial communication.
System key > Enter system key.
Device number > Enter serial number of device.
Modus
Request
Autosend
> Select the transfer mode.
Baud rate
115200
(…)
1200
> Select desired baud rate from drop-down list.
Send Frequency
1, 5, (…), 60
> Select time span in seconds.
Protocol
GWFSerial
C Type
SHWP
> Select serial communication protocol type.
GWFSerial
(Settings: baud rate 9600, parity: none; data bits: 8; stop bits 1)
C Type
Specific communication protocol corresponding to manufacturer specific data logger type.
SHWP
Specific communication protocol corresponding to manufacturer specific data logger type.
Further specifications will be available on request.
Value
A
(…)
> Specify output parameter from dropdown list.
Unit
> Select desired unit for the value.
Click Apply to save settings..
Example: Request of a floating point value
The flow meter device has the modbus address 42 (ID: 42).
In the user interface in register 1 the device is exporting the parameter water level (H),
with current value 0.8351314 m (Register: 1, Value: H, Unit: m).
Request (hexadecimal): 2A 03 00 00 00 02 C2 10
Description Hexadecimal byte Remark
Address 2A User settings – 42
Function 03 Read Holding Register
Start address high 00 Start address 0 (user settings Register 1)
Start address low 00
—
Number of values high 00 2 registers needed to represent a float
Number of values low 02
—
Error check CRC C2 10
—
Answer (hexadecimal): 2A 03 04 CB 2C 3F 55 4F 13
Programming
Page 90 March 2021HYB-UM-03155-EN-03
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