Vaisala HMP240 User Manual

Page 98

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HMP240
Appendix 2: RS 485/422 serial port module

M210300en

96

Set the address of the transmitter; you can choose any number
between 1 and 99. In this example the address is 22:

>addr 22
Address : 22

Set the serial bus settings according to your network specifications.
This setting will become valid after next RESET or power off:

>seri 2400 e 7 1 h
2400 E 7 1 HDX

Set the transmitter in POLL mode:

>smode poll
Serial mode : POLL

NOTE 1

The SMODE command must be given last.

NOTE 2

The transmitter outputs no prompt (>) after the SMODE
POLL command and it only reacts to commands which
include its address.

Check that the transmitter responds to its address:

>send 22
RH= 24.4 %RH T= 29.1 'C

Disconnect the terminal.

Check that the jumpers in connector X4 are in the right places.

X4

X4

X1

X2

Remount the RS 485/422 serial module.

Close the cover.

When all transmitters on the network have been configured, switch
them off.

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