SMA Protocol  PR 5211 Instrument Manual 
EN-48    Sartorius 
5.3  Scale Command Set 
The following section defines the host commands that are used to command the scale to either send 
information or perform operations as directed.  
All scale commands start with a <LF> and end with a <CR> to ensure proper handling by the scale. 
Format:  <LF>c<CR> 
5.3.1  Request Displayed Weight 
Command:  <LF>W<CR> 
Response:  Scale returns Weight and status information immediately: gross weight if not tared, net 
weight if tared. 
  <LF><s><r><n><m><f><xxxxxx.xxx><uuu><CR> 
  For detail see chapter 5.4.1. 
5.3.2  Request High-Resolution Weight 
Command:  <LF>H<CR> 
Response:  Scale returns High-resolution (10x) weight and status information immediately: gross 
weight if not tared, net weight if tared. 
  Note: the gross/net status indicator <n> will be in lower case during highresolution weight 
transmission. 
  <LF><s><r><n><m><f><xxxxxx.xxx><uuu><CR> 
  For detail see chapter 5.4.1. 
5.3.3  Request Displayed Weight after Stability 
Command:  <LF>P<CR> 
Response:  Scale returns displayed weight and status information only after scale has achieved a 
stable weight: gross weight if not tared, net weight if tared. 
  For this function the standstill condition of the scale must be fullfilled. The maximum wait 
time for standstill could set with the 'Standstill time-out', see chapter 4.9.2.8. 
  <LF><s><r><n><m><f><xxxxxx.xxx><uuu><CR> 
  After the standstill wait time without reaching a standsill, the following respond is send: 
  <LF><_><1><n><_><f><----------><___><CR> 
  For detail see chapter 5.4.1. 
  See chapter 4.9.2.8. 
5.3.4  Request Scale to Zero 
Command:  <LF>Z<CR> 
Response:  Scale attempts to zero itself and reports zero status in the <s> status indicator. 
  For this function the standstill condition of the scale must be fullfilled. The maximum wait 
time for standstill could set with the 'Standstill time-out', see chapter 4.9.2.8. 
  <LF><Z><r><n><m><f><xxxxxx.xxx><uuu><CR> 
  For detail see chapter 5.4.1. 
  If the scale is not inside the zero set range, an error message is generated.