Vaisala WXT520 Podręcznik Użytkownika Pobierz pdf (Strona 73)

Chapter 7 __________________________________________________ Getting the Data Messages

VAISALA_______________________________________________________________________ 71

Device Address (?)

This command is used to query the address of the device on the bus.

Command format: ?<cr><lf>

The response:

b<cr><lf>

Example:

?<cr><lf>

0<cr><lf>

If more than one transmitter is connected to the bus, see Appendix A,

Networking, on page 149. If you need to change the device address, see

Changing the Communication Settings (aXU) on page 63.

Acknowledge Active Command (a)

This command is used to ensure that a device is responding to a data

recorder or another device. It asks a device to acknowledge its presence

on the bus.

Command format: a<cr><lf>

where

? = Device address query command

<cr><lf> = Command terminator

where

b = Device address (default = 0)

<cr><lf> = Response terminator.

where

a = Device address

<cr><lf> = Command terminator

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Vaisala WXT520 Podręcznik Użytkownika Strona 73