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5 Troubleshooting
Review the common error messages and solutions included in this section. If unable
to resolve problems after the upgrade, refer to the LevelMaster user manual or see
the contact information in the back of this guide to call for support.
5.1
Errors observed on the MasterLink
The following are common errors displayed when using the MasterLink software to
connect with the LevelMaster.
5.1.1 Communication when using MasterLink (local connection)
The errors described in Table 3 display when communication cannot be established
with the LevelMaster.
Description
Device did not
respond
The following
message is displayed:
"The COM port you
selected does not
exist or is used by
another application"
5.1.2 Measurement errors displayed by MasterLink
The errors described in Table 4 display on the monitor tab.
Description
Incorrect Tank Level measurement
(temperature reading is correct)
Error code= 30, Warn code= 0
Analog to digital converter
saturation, gain set too high
24 | 2105824-001 rev. AA
Table 3: Communication errors on MasterLink
Cause
MasterLink is unable to
establish communication with
the unit for the following
reasons:
Incorrect port (Comm. Port)
selected
Incorrect baud rate selected
Faulty cabling
USB port not assigned to
virtual COM port on laptop
MasterLink did not find the
laptop communication port to
communicate with.
Table 4: Measurement errors on MasterLink
Cause
Incorrect float configuration
(wrong configuration
chosen or wrong default
file downloaded)
Solution
Select correct comm port and
baud rate
Verify wiring.
Check cabling:
Verify converter cable and
adaptors are securely attached.
Verify batteries on converter cable
are charged and connected
correctly (positive voltage terminal
must be connected to red wire)
Install drivers for the serial-to-USB
adapter and verify that a virtual
serial port is assigned. USB ports
are usually identified as COM 4 or
higher. Legacy serial ports are
normally assigned COM3 or lower.
On the main MasterLink screen:
Make sure the com port is
detected
Select the correct port.
Solution
Select Setup tab,
select Hardware
change, select correct
float configuration
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