Specifications

73
Reference Manual
00809-0100-2460, Rev AA
Section 6: Service and Troubleshooting
November 2014
Service and Troubleshooting
Symptom Possible cause Action
Impossible to change
configuration (write to
Holding Registers) of the
2460 database
The 2460 is write protected
• Check hardware write protection switch (see “Write
Protection” on page 94)
• Check software write protection in TankMaster WinSetup
Configuration locked by other
host system
• Retry after a couple of minutes
Process value is invalid
Process value is not valid
• Check status in Input Registers for the failing field device
All process values are invalid
• Check device status/error Input Registers for the failing
field device
Connected devices don’t
respond to request
The 2460 Tank Database is not
configured
• Configure Tank Database with TankMaster WinSetup
Bad cabling or wrong polarity
• Check or change cables
Wrong communication settings Use TankMaster to check communication settings.
For TRL2 modems: Baud Rate=4800, Data bits per
character=8, Stop bits=1, no parity
See Table 4-1 on page 4-48.
Connected to wrong modem
slot
Check which modem is used. Ports 1-4 are used for
field devices. Port 7-8 are used for host
communication. Ports 5-6 can be used for host or
field device communication depending on
configuration.
Mismatch between Modbus
address in field device and 2460
Tank Database
Make sure that the Modbus address of the field device
is configured for the right tank in the Tank Database of
the 2460.
See “Step 3. Tank Database Configuration” on
page 50.
Protocol settings are not
correct after changing
modem card
Protocol is not in AutoDetect
mode
Open the Advanced Port Configuration window and set
Protocol to Autodetect.
Properties>Configuration>Advanced.