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Fairbanks X SERIES PR 5410 Process Indicator User Manual

Page 120

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Section 5: SMA Protocol

10/08 120

51207 Revision 1

Requesting the High-Resolution Weight with Stability

Command: Q
Reply:

The scale returns the weight and status only, when the stability condition is met: Gross
weight if not tared, net weight if tared.

The stability condition must be met for this function. The maximum waiting time for
stability is set under [Tare timeout]; see Chapter 4.5.13.

After elapse of the waiting time without reaching stability, the following reply is sent:

<_><1><_><----------><___>

For details, see Chapter 5.4.1 .



Requesting the High-Resolution Weight Continuously

This is a command which generates non-requested replies, because it does not function according
to the strict command-and-reply pattern. After the command, the scale repeats the reply
continuously.

Command: S
Reply:

The scale repeats the high-resolution weight and status information continuously, until
another command is received.

For details, see Chapter 5.4.1 .


Dependent on the used baud rate, the repetition rate of reply telegrams is roughly as follows:
19200 bd

100ms

9600 bd

110ms

4800 bd

170ms



Requesting the Tare Weight

Command: M
Reply:

The scale returns the tare weight and signals the 'tared' status in the status
character.

For details, see Chapter 5.4.1 .


5.3.2 Controlling the Scale


Request for Taring of the Scale

Command: T
Reply:

The scale makes a taring attempt and signals the tared status in the and
characters.

For this function, the stability condition must be met. The maximum waiting time for
stability is set under [Tare timeout]; see Chapter 4.5.13

For details, see Chapter 5.4.1 .