SMA Protocol
PR 5220 Instrument Manual
EN-130 Sartorius
Standard Reply
With most commands, the reply format is as described below:
Exceptions are the commands: 'D', 'A'/'B' and 'I'/'N'.
<LF> <s> <r> <n> <m> <f> <xxxxxx.xxx> <uuu> <CR>
Reply format and meaning:
<LF> Start of reply message
<s> Scale status Definition / example
‘Z’ Zero within 1/4d <xxxxxx.xxx>= 0.000
‘O’ Above Max <xxxxxx.xxx>= +weight
‘U’ Below zero <xxxxxx.xxx>= - weight
‘E’ Zero setting error
‘T’ Taring error
<space> None of the above conditions
Note: For ‘E’, ‘I’, ‘T’ error conditions
<xxxxxx.xxx>= ————— (minus sign)
and ‘Z’, ‘O’, ‘U’ are overwritten.
<r> Range (‘1’, ‘2’, ‘3’, etc.) always ‘1’ for single range scales
<n> Gross/net Status
‘G’ Gross weight
‘T’ Tare weight (as reply from ‘M’ command)
‘N’ Net weight
‘g’ High-resolution gross weight
‘n’ High-resolution net weight
<m> Stability status
‘M’ The scale is not stable
<space> The stability-of-scale condition is met
<f> Reserved for future extensions
<xxxxxx.xxx> Weight value; the field has always 10 characters
<uuu> Unit of the weight value
<CR> End of the reply message
Example:
Command Reply
<LF>W<CR> <LF> <_> <1> <G> <_> <_> <_ _ _ _ 5.025> <lb_> <CR>
<LF>W<CR> <LF> <_> <1> <N> <_> <_> <_ _ _ _ 100000> <lb_> <CR>
<LF>H<CR> <LF> <_> <1> <g> <_> <_> <_ _ _ _5.0025> <lb_> <CR>
<LF>Z<CR> <LF> <Z> <1> <G> <_> <_> <_ _ _ _ _0.000> <lb_> <CR>
<LF>R<CR> <LF> <_> <1> <G> <_> <_> <_ _ _ _ 7.025> <kg_> <CR>
<LF> <_> <1> <G> <M> <_> <_ _ _ _ 7.650> <kg_> <CR>
... repeat...
<LF> <_> <1> <G> <_> <_> <_ _ _ _ 7.650> <kg_> <CR>
The scale repeats the weight, until another command is received.
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