Vaisala HMP260 User Manual

Page 107

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HMP260 SERIES

HMP260-U017en-1.5

Appendix 4: Digital current loop module

Dual loop wiring

•

Set the address of the transmitter, it can be 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 system. This setting will become
valid after next RESET or power off:

>seri 2400 e 7 1 f
2400 E 7 1 FDX

•

Switch echo on:

>echo on
ECHO : ON
>

•

Change the serial output mode into POLL:

>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.

•

Remount the digital current loop module.

•

Close the cover.

•

Repeat this setting procedure with each transmitter

•

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

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