Chapter 4 ________________________________________________________________ Operation  
VAISALA_______________________________________________________________________ 71 
Table 12  FORM Modifiers 
Modifier Description 
/  Restores the default output message (depends on the 
device configuration). Used alone. 
??  Displays list of supported parameters. Used alone. 
0.0  Revert back to the default number format per each quantity. 
x.y  Length modifier (number of digits and decimal places). 
quantity 
Quantity value or * characters if not available. 
U  Unit symbol as it is (width depends). 
U1…U9  Unit symbol in the specified number of characters (truncated 
or space filled as necessary). 
“xxx”  String constant (free text). 
#N 
\N 
Line feed character <0x0A>. 
#R 
\R 
Carriage return character. <0x0D>. 
#RN 
\RN 
Carriage return and line feed characters. <0x0D><0x0A>. 
#T 
\T 
Horizontal tabulator character <0x09>. 
#0…#255 
\0…\255 
Data byte with the specified decimal value. 
ADDR  Device address (left-filled with spaces). 
CS2  Modulus-256 checksum of message sent so far, 
hexadecimal format. 
CS4  Modulus-65536 checksum of message sent so far, 
hexadecimal format. 
CSX  NMEA XOR checksum of message sent so far, hexadecimal 
format. 
DATE  Date in format yyyy-mm-dd. 
ERR  Error flags for P
1
, P
2
, and P
3
 (if installed, right-filled with 
spaces); 0 = no error, 1 = error. 
MCTR  Running counter for pressure measurement. 
PSTAB  Pressure stability indicator (OK or two spaces), see PSTAB 
on page 82. 
RDTIME  Time in format hh:mm:ss.ss. 
SN Device serial number. 
TIME  Time in format hh:mm:ss. 
 
Checksums are calculated as described in the equations below. 
n
i
i
bcs
1
2
256mod  
65536mod
1
4
n
i
i
bcs  
24630'
2463'
'''
i
21
ii
iiii
nx
borbifb
bandbifbb
bbbcs