Rice Lake PR5220 Ethernet Transmitter - Manual (Page 131)

PR 5220 Instrument Manual SMA Protocol
Sartorius EN-131
Reply with Unknown Command
<LF> ? <CR> A command from the controlling computer that is not implemented, or invalid, is replied
with an ASCII ‘?’.
Reply in Case of Communication Error
<LF> ! <CR> A command from the controlling computer that is unknown to the scale due to a
communication error is replied with an ASCII ‘!’. This includes parity error or frame error
(if any).
Reply with Diagnosis Command
When a diagnosis command is given, the scale makes a test and gives a status reply.
<LF> <r> <e> <c> <m> <CR>
Reply format and meaning:
<LF> Start of diagnosis reply
<r> ‘R’ = RAM or ROM error, ‘_’ = OK,
<e> ‘E’ = EEPR OM error, ‘_’ = OK
<c> ‘C’ = calibration error, ‘_’ = OK
<m> Always: ‘_’ = OK
<CR> Start of the diagnosis reply
Example: without error status
Command Reply
<LF>D<CR> <LF> <_> <_> <_> <_> <CR>