Nidek Medical LM-1800P, Interface Manual

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RS-232C Communication and USB Communication
:
Error Format
2
MLM26*RTZ002F
2.5 Error Format
When the LM becomes unable to perform measurements or to perform measurements properly, the
LM will respond to “SD command” by transmitting an error message instead of sending measurement
data.
Basic error formats are as follows.
Since this format is the same as that of data, the error can be processed with normal interface soft-
ware. The data identification code shows the detail of the error.
The LM sends the following errors:
To cancel the error, see “4.2 Error Messages and Countermeasures” of the operator’s manual.
In the case of “measurement error”
SOH D L M STX I E ETB CR EOT CR
01H 44H 4CH 4DH 02H 49H 45H 17H 0DH 04H 0DH
The CR codes are added.
Character representing “Error”
Character representing “Initialize error”
Represents data for “LM”.
Represents “Data”.
: Character string (11 characters including CR)
: Character code (H = Hexadecimal)
Error Code Indication on LM Description
Initialization
error
IE
Please remove lens from nosepiece
The error occurred during the
initialization after power ON.
Dust detected. Please clean lens.
Use contact nosepiece?
0D initialization error
CCD error
Measurement
error
DE Measurement error
The LM cannot measure lenses
properly.
SOH D L M STX D E ETB CR EOT CR
01H 44H 4CH 4DH 02H 44H 45H 17H 0DH 04H 0DH
Identification code of data string: “DE”