Networking operation, Setting the transmitter address – Vaisala GMP343 User Manual
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Chapter 4 ________________________________________________________________ Operation
VAISALA_______________________________________________________________________ 37
Networking Operation
When several transmitters are connected to the same RS-485 bus it is
recommended to use separate power supplies for each transmitter. Make
sure that the devices are grounded to the same potential. Otherwise harmful
ground currents may be generated or RS-485 common-mode limits may be
exceeded.
There is no internal termination for the RS-485 bus on the GMP343. For
long RS-485 bus lengths proper termination should be provided externally.
Setting the Transmitter Address
ADDR aa
SAVE
aa=address (0...99)
Example (changing address from 0 to 1):
>addr
ADDR : 0 ? 1
>
>save
EEPROM saved successfully.
>
NOTE
Only approximately 1 % accuracy is obtained with the software clock.