Rice Lake PR5230 Fieldbus Transmitter - Manual (Page 177)

PR 5230 Instrument Manual SMA Protocol
Sartorius EN-177
7.3 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 <LF> and end with <CR>.
Format: <LF>c<CR>
Requesting a Weight
Requesting a Weight
Command: <LF>W<CR>
Reply:
The scale immediately returns the weight and status: gross weight if not tared, net weight if
tared.
<LF><s><r><n><m><f><xxxxxx.xxx><uuu><CR>
For details, see page 180.
Requesting the Weight with Stability
Command: <LF>P<CR>
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 5.4.13.
<LF><s><r><n><m><f><xxxxxx.xxx><uuu><CR>
After elapse of the waiting time without reaching stability, the following reply is sent:
<LF><_><1><n><_><f><----------><___><CR>
For details, see page 180.
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: <LF>R<CR>
Reply:
The scale repeats the weight and status information continuously until another command is
received.
<LF><s><r><n><m><f><xxxxxx.xxx><uuu><CR>
For details, see page 180.
Dependent on the used baud rate, the repetition rate of reply telegrams is roughly as follows:
19200 Bd
 100 ms
9600 Bd  110 ms
4800 Bd  170 ms
Requesting the High-Resolution Weight
Command: <LF>H<CR>
Reply:
The scale immediately returns the high-resolution (10x) weight and status: Gross weight if not
tared, net weight if tared.
Note: The <n> gross/net status is shown in lower-case letters while the high-resolution weight is
sent.
<LF><s><r><n><m><f><xxxxxx.xxx><uuu><CR>
For details, see page 180.