Vaisala HMP260 - Manual (Page 98)

HMP260 SERIES
HMP260-U017en-1.5 Appendix 3: RS 485/422 serial port module
4 CHECKING THE SERIAL PORT NETWORK OPERATION
Normally measurement readings are asked when the transmitter is in POLL
mode; the command must then include the address of the transmitter. If the
settings of the transmitter need to be changed, the transmitter is switched to
STOP mode with command OPEN; commands can then be given without
address. When the line to the transmitter is closed, it returns to POLL mode.
STOP mode
Open the line to the transmitter:
open 22
HMP 22 line opened for operator commands
Transmitter no. 22 is now temporarily set to STOP mode; it accepts
commands sent without address until CLOSE command is given. Individual
settings can now be easily modified. Do not open more than one line at a time.
Use command ? to find out the settings of the active transmitter:
?
HMPS 260 / 1.01
CPU serial nr
: 0
Keyboard type : 0
Address : 7
Output units : metric
Baud P D S : 4800 E 7 1 FDX
Serial mode : STOP
Output intrv. : 0 min
Mtim : 32
Pressure : 1013.25
Analog outputs
Ch1 0.00 ... 10.00 V
Ch2 0.00 ... 10.00 V
Ch1 ( RH ) lo
0.000 %RH
Ch1 ( RH ) hi 100.000 %RH
Ch2 ( T ) lo -20.000 'C
Ch2 ( T ) hi 180.000 'C
Transducer
:
PRB serial nr : 0
Calibr. date : 0
When the necessary settings have been made, close the line to transmitters
(the command closes all open lines):
>close
line closed
CLOSE command is always given without address. If no line is open, there
will be no response to the CLOSE commands.