Vaisala HMP260 SERIES Manual de servicio Pagina 109

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HMP260 SERIES
HMP260-U017en-1.5 Appendix 4: Digital current loop module
POLL mode
If a transmitter has been set to POLL mode, it will respond only to commands sent with
its address:
send 22
RH= 24.4 %RH T= 29.1 'C
Addresses from 1 to 99 can be used. According to the 20 mA current loop standard
current flows with no transmission on line. A maximum of 6 devices can be connected
on same single loop line, but the number can be raised to 9 by using dual loop wiring.
Current loop settings
HMP260 settings single pair dual pair
Full duplex/half duplex HDX FDX
Echo on/off OFF ON
Terminal settings
Line feed after carriage return yes no
HDX/FDX FDX FDX
When terminal is set to general <lf> (line feed) after <cr> (carriage return), the listings
will have two line feeds where also the HMP260 transmitters send line feed.
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