Metrohm 781 pH/Ion Meter: Operation via RS-232 - Manual (Page 8)

1.4 Error messages
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780/781 pH/Ion Meter - Operation via RS232
1.4 Error messages
Error messages are added to the status messages and separated from them by a semicolon
";".
Error Description How to exit
E21 Check electrode, short circuit. Rectify fault or &m $S?.
E22 Check electrode, break. Rectify fault or &m $S?.
E26 Manual stop. $G, $S or change mode.
E27 Stop volume reached. $G, $S or change mode.
E28 Wrong object call up Send correct path for object. Start path at
root.
E29 Wrong value or no value allowed. Send correct value or call up new object.
E30 Wrong trigger, this trigger is not allowed or
carrying-out of action not possible.
Send correct trigger or call up new object.
E31 Command is not possible in active status.
Repeat command in inactive status.
Send new command.
RS receive errors
E36 Parity.
<QUIT> and ensure settings of
appropriate parameters at both devices
are the same.
E37 Stop bit. <QUIT> and ensure settings of
appropriate parameters at both devices
are the same.
E38 Overrun error. At least 1 character could
not be read (wrong baud rate).
<QUIT>
E39 The internal receive buffer of the pH/Ion
Meter is full.
<QUIT>
RS send errors
E42 CTS=OFF.
No proper handshake for more
than 1 s.
<QUIT>, Is the receiver switched on and
ready to receive?
E43 The transmission of the pH/Ion Meter has
been interrupted with XOFF for at least 3 s.
Send XON or <QUIT>.
Other
E120 Overrange of the primary measured value. Rectify fault or change mode; in running
process: $G.
E121 Measured value memory full. <QUIT> and d elete measured values.
E135 Check temperature sensor in mode T . Rectify fault or change mode.
E136 Same buffer / standard. $G, $S and rectify fault.
E137 XXX Bytes are missing during method
storage.
<QUIT> and d elete methods.
E138 Buffer not defined. $G or $S.
E139 Buffer allocation impossible. $G or $S.
E140 Delta T > 2°C. $G or $S.
E141 Cal. data out of limits. $G or $S.