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Reply with unknown command, Reply in case of communication error, Reply with diagnosis command – Rice Lake PR5230 Fieldbus Transmitter User Manual

Page 182: Sma protocol, Pr 5230 instrument manual

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SMA Protocol

PR 5230 Instrument Manual

EN-182

Sartorius

Reply with Unknown Command

?

A command from the controlling computer that is not implemented, or invalid, is replied
with an ASCII ‘?’.

Reply in Case of Communication Error
!

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.

Reply format and meaning:

Start of diagnosis reply

‘R’ = RAM or ROM error; ‘_’ = OK,

‘E’ = EEPROM error; ‘_’ = OK

‘C’ = calibration error; ‘_’ = OK

Always: ‘_’ = OK

End of the diagnosis reply

Example: without error status!

Command:

D

Reply:

<_> <_> <_> <_>