Operation
VX 570 English V1.10
Seite 34 von 44
11.3.2 Modbus RTU
11.3.2.1 Setup
The Flow sensors VX 570 comes with a Modbus RTU Interface.
Before commissioning the sensor the communication parameters
•
Modbus ID, Baud rate, Parity und Stop bit
must be set in order to ensure the communication with the Modbus master.
Settings
→
Modbus Setup
Default values out of factory:
Modbus ID: 1
Baud rate:
19200
Stopbit:
1
Parity:
even
Byte Order:
ABCD
Remark:
If the sensor placed at the end of the Modbus system, a termination is required.
Therefore, the enclosed 120R resistor is to be connected at Pin7 and Pin 11...
For changes, e.g. the sensor ID,
first select by pressing key
„>“
the field
“ID”
and then key “
OK”
.
Select the desired position by pressing the
">"
and select with
"OK
" button.
Change values by pressing the
„>“
values
takeover by pressing
"OK".
Settings or baud rate, stop bit and parity by
selecting the item with
">" and changing wit
“OK”.
By means of the button "Byte Order" it is
possible to change the data format (Word
Order). Possible formats are "ABCD" (Little
Endian) and "CDAB" (Middle Endian)
Saving the changes by pressing
"Save",
therefore select it with key
„>“
and then confirm
it with
"OK".
Reset to the default settings by activating
"Set
to Default"-