Vaisala WINDCAP WMT52 Uživatelská příručka stáhnout pdf (Strana 75)

Chapter 7 __________________________________________________ Getting the Data Messages

VAISALA_______________________________________________________________________ 73

?!0<cr><lf>

Acknowledge Active Command (a)

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

recorder or another SDI-12 device. It asks a device to acknowledge its

presence on the SDI-12 bus.

Command format: a!

The response:

a<cr><lf>

Example:

0!0<cr><lf>

Change Address Command (aAb)

This command changes the device address. After the command has

been issued and responded to, the sensor is not required to respond to

another command for one second time in order to ensure writing the

new address to the non-volatile memory.

Command format: aAb!

where

a = Device address

! = Command terminator

where

a = Device address

<cr><lf> = Response terminator

where

a = Device address

A = Change address command

b = Address to change to

! = Command terminator

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Vaisala WINDCAP WMT52 Uživatelská příručka Strana 75