PR 5211 Instrument Manual SMA Protocol
Sartorius EN-47
5.2 Key to Symbols Used
All characters used in this standard are printable ASCII except <CR> <LF> <SPACE> and <ESC>.
< > The symbols < and > are used to bracket communication fields and identify non-
printable ASCII characters. They are never a part of any actual communication message.
<LF> Line Feed character used for start of data frame (0A hex).
<CR> Carriage Return character used for end of data frame (0D hex).
‘_’ <space> The underscore or <space> are used to denote an ASCII space character (20 Hex).
<ESC> Escape character used as an abort command (1B hex).
‘!’ ASCII exclamation mark character is used for a data communication error. (21 hex).
‘:’ ASCII colon used as a field delimiter (3A hex)
‘-’ ASCII center dash character (2D hex)
‘?’ ASCII question mark character is used for unrecognized or unsupported commands (3F
hex).
‘c’ Command characters all printable ASCII characters.
<s><r><n> Scale status indicators; ASCII letter characters or space
<m><f> See chapter 5.4.1 for exact status details.
<r><e> Scale diagnostic indicators; ASCII uppercase characters or space
<c><m> See chapter 5.4.4 for exact status details
<xxxxxx.xxx> Weight data including minus sign (right justified when needed) and decimal point (if
needed). Leading spaces are used with a leading zero to the left of the decimal point if
needed. This field is always fixed at 10 characters in length. During some error condition
this field is filled with ‘-’ dashes.
Examples:
<_ _ _ _ _0.000>; <_ _ _ _11.120>; <_ _ _ _ -1.000>; <- - - - - - - - - ->
<yyyyyy> Text field of printable ASCII characters used to convey scale information. This field will
not exceed a maximum of 25 characters.
<uuu> Unit-of-Measure abbreviation. This field is always 3 characters long with a trailing
space(s) when appropriate.
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