Vaisala HMP240 User Manual
Page 34
HMP240
User's Guide
M210300en
32
When the connection to a given transmitter is opened in the POLL mode, the
transmitter goes into STOP mode and can then receive commands normally.
Closing the connection returns the transmitter to POLL mode. In POLL mode,
the transmitter outputs measurement only when requested (command SEND
aa). If the user has forgotten the address of the transmitter and the transmitter
does not have a display, the transmitter has to be reverted to the factory set-
tings (see Chapter 4.4.1). If the transmitter has a display, the settings can be
checked through it.
5.3.6.1
Setting the serial interface operation mode
•
Select Mode in the main menu; the following is displayed:
•
Select Serial output:
•
The currently valid setting flashes. Select the desired mode with the
arrow keys and press ENT. After this the programme returns to the
Mode Menu.
•
When Run mode is selected, the currently valid output interval is dis-
played:
The output interval setting can be changed as follows:
•
press CL
•
the number starts flashing
•
if the interval needs to be changed, press CL again and enter the new
interval; otherwise press ENT
•
the unit (seconds or hours) starts flashing
•
the unit can be changed with the arrow keys and acknowledged with
ENT
•
after this the programme returns to Mode menu