Vaisala HMP155 User Manual
Page 36
USER'S GUIDE____________________________________________________________________
34 _______________________________________________________________ M210912EN-C
OK
>send
Temperature= 24.23
>
>form "Twet=" 6.3 tw U3 #t "T=" t U3 #r#n
OK
>send
Twet= 11.290'C T= 24.231'C
>
>form 5.1 rh #t t #t tdf #r#n
OK
>send
15.6 24.2 -3.1
>
FORM / command returns the default output format. The default output
format depends on the device configuration. FORM command without
formatter string returns the current output format of the probe.
>form /
OK
>send
RH= 23.8 %RH T= 19.4 'C
>
Checksums are calculated as described in the equations below.
n
i
i
b
cs
1
2
256
mod
65536
mod
1
4
n
i
i
b
cs
2
4
6
3
0
'
2
4
6
3
'
'
'
'
i
2
1
i
i
i
i
i
i
n
x
b
or
b
if
b
b
and
b
if
b
b
b
b
b
cs
Table 14
Symbols Used in FORM Checksum Equations
Symbol Description
cs
2
Value of CS2 checksum in the output message.
cs
4
Value of CS4 checksum in the output message.
cs
x
Value of CSX checksum in the output message.
b
i
Value of the byte at position i (1-based) in the output message.
n
Number of bytes in the output message before the CS2, CS4, or
CSX field (including earlier checksum fields, if any).
Bit-wise exclusive-or operator.
36
Byte value of ASCII $ character.
42
Byte value of ASCII * character.