Fairbanks X SERIES PR 5220 ETHERNET TRANSMITTER - Manual (Page 71)

Section 6: SMA Protocol
05/11 72 51209 Revision 2
6.3 SMA Command Set
The SMA command set is intended for requesting weight values and status information as well as
for control of the scale. The commands start with and end with .
Format: c
6.3.1 Requesting a Weight
Command
: W
Reply: The scale immediately returns the weight and status: gross weight if not tared, net
weight if tared.
For details, see Chapter 6.6.1 .
6.3.2 Requesting the Weight with Stability
Command
:
P
Reply: The scale returns the weight and the status only, when the stability condition is met:
Gross weight if not tared, net weight if tared.
For this function, the stability condition must be met. The maximum waiting time for
stability is set under [Tare timeout]; see Chapter 5.4.19.
After elapse of the waiting time without reaching stability, the following reply is sent:
<_><1><_><----------><___>
For details, see Chapter 6.6.1 .
6.3.3 Requesting Weight Continuously
This is a command which generates non-requested replies, because it does not function according
to the strict pattern of command and reply. After the command, the scale repeats the reply
continuously.
Command
:
R
Reply: The scale repeats the weight and status information continuously until another
command is received.
For details, see Chapter 6.6.1 .
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
6.3.4 Requesting the High-Resolution Weight
Command
:
R
Reply: The scale immediately returns the high-resolution (10x) weight and status: Gross
weight if not tared, net weight if tared.
Note: The gross/net status is shown in lower-case letters while the high-resolution
weight is sent.
For details, see Chapter 6.6.1 .