Vaisala HMP260 - Manual (Page 76)

HMP260 SERIES
HMP260-U017en-1.5 Appendix 1: Serial commands
The output mode can be changed with command FORM.
DSEND Outputting readings of all connected transmitters once
DSEND
All transmitters connected to the serial bus send their addresses and current
measurement readings in an order defined by their addresses. After receiving DSEND
command a transmitter sets a delay time according to its address value and sends the
data after this delay. DSEND works also in POLL mode. With this command the user
can, for example, easily find out the addresses of the transmitters.
The output when four transmitters with addresses 4, 5, 10, 33 have been connected to
the serial bus:
>dsend
4 14.43 %RH
5 22.7 'C
10 14.99 %RH
33 22.3 'C
>
ERRS Outputting error messages
ERRS
During operation error messages are not automatically output through the serial
interface. If there is any reason to doubt that there is something wrong with the
transmitter, possible error messages can be output with command ERRS.
If there are no error messages, only a prompt is displayed:
>ERRS
>
If errors have occurred, the transmitter outputs the error code (see Appendix 5 for error
messages):
>ERRS
E40 f ( all ) out of range
>