Vaisala WAC155 Guide de l'utilisateur télécharger pdf (Page 36)

User's Guide ______________________________________________________________________

34 ___________________________________________________________________M210822EN-A

Example response:

$PAMWV,50,R,0.0,M,A*04

Table 5 on page 34 provides checksums and polling strings for some

typical device IDs.

Service Connection

The service connection allows you to configure the device and gather

status information. The same physical RS-485 interface connection is

used for both the data transmission and the service connection. When

the service connection is opened (using the OPEN command), the data

transmission and query are disabled as long as the service connection

remains open.

When you change any parameters using the service connection,

remember that a reset (or a power-up) is required to take the new

parameters into use.

The commands are not case-sensitive; formats 'COMMAND',

'command', 'Command' and all other combinations of upper and lower

case letters are accepted. However, the device ID is case-sensitive.

Commands are entered on a single line, terminated by a line feed <lf>

or carriage-return <cr> characters. If the terminal provides both

characters as the line end marker, the second EOL character is silently

Table 5 Checksum table

ID Character <id> Checksum <CS> Polling String

A 72 $WIPAQ,*72<cr><lf>

B 71 $WIPBQ,*71<cr><lf>

C70$WIPCQ,*70<cr><lf>

D77$WIPDQ,*77<cr><lf>

E 76 $WIPEQ,*76<cr><lf>

F 75 $WIPFQ,*75<cr><lf>

G 74 $WIPGQ,*74<cr><lf>

H 7B $WIPHQ,*7B<cr><lf>

I 7A $WIPIQ,*7A<cr><lf>

J79$WIPJQ,*79<cr><lf>

K 78 $WIPKQ,*78<cr><lf>

L 7F $WIPLQ,*7F<cr><lf>

M 7E $WIPMQ,*7E<cr><lf>

N 7D $WIPNQ,*7D<cr><lf>

O 7C $WIPOQ,*7C<cr><lf>

1 2 ... 31 32 33 34 35 36 37 38 39 40 41 ... 59 60

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Vaisala WAC155 Guide de l'utilisateur Page 36