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 and end with .
Format: c
Requesting a Weight
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 page 180.
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 5.4.13.
After elapse of the waiting time without reaching stability, the following reply is sent:
<_><1><_><----------><___>
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: R
Reply:
The scale repeats the weight and status information continuously until another command is
received.
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: H
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 page 180.