5.5.3 Set the RS485 Modbus address
After the password being verified and entering into the MENU
settings, press the “Up” or “Down” key until the screen shows the F2
- Addr as indicated to the left.
The Modbus address has 3 digits, which can be any number between
001 to 255. Press the “M” key to enter into the change address screen.
Press the “Up” or “Down” key to change the flashing digits, and then
press the “M” key to confirm. After the address is set, the display will
return to F2 - Addr, which indicates the task is completed. Press the
“Up” or “Down” key to select F99 - qUIT and the “M” key to exit the
MENU and return to the Main Display screen.
5.5.4 Set the RS485 communication baud rate
Following the above-mentioned steps, at the MENU setting screen,
use the “Up” or “Down” key to select F3 - bPS and then press the
“M” key to set the RS485 communication baud rate.
There are 6 baud rates selectable, depending on your system
requirements: 4800, 9600, 19200, 38400, 57600, and 115200. The
default baud rate is 9600. Use the “Up” or “Down” key to select the
desired one and press the “M” key to confirm. The display will then
return to the F3 - bPS screen, which indicates the task is completed.
Use the “Up” or “Down” key to select F99 - qUIT and the “M” key to exit the MENU and return to the
Main Display screen.
5.5.5 Reset or calibrate the offset
After a certain time of usage, the meter’s offset (zero flow rate)
might or might not have a small shift. Or when you apply the meter
for different gases, the offset might be shifted. To ensure
measurement accuracy, it is necessary to reset or calibrate the offset.
Following the above-mentioned steps, at the MENU setting screen,
use the “Up” or “Down” key to select F11 - oFFST. Before performing
the task, make sure there is absolutely no flow in the flow channel,
otherwise, it will create even bigger erroneous measurement results.
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