Emerson Rosemount 2460 Reference Manual page 111

Reference Manual
00809-0100-2460, Rev DB
Symptom
Impossible to change
configuration (write to
Holding Registers) of the
Rosemount 2460 database
Process value is invalid
Connected devices don't
respond to request
Protocol settings are not
correct after changing
modem card
Service and Troubleshooting
Possible cause
The Rosemount 2460 is write
protected
Configuration locked by other
host system
Process value is not valid
All process values are invalid
The Rosemount 2460 tank
database is not configured
Bad cabling or wrong polarity
Wrong communication
settings
The Rosemount 2460 is
connected to wrong modem
port
Mismatch between Modbus
address in field device and
Rosemount 2460 tank
database
Protocol is not in AutoDetect
mode
Service and Troubleshooting
Action
•
Check hardware write protection switch (see
protection" on page 134)
•
Check software write protection in TankMaster
WinSetup
•
Retry after a couple of minutes
•
Check status in Input Registers for the failing field device
•
Check device status/error Input Registers for the failing
field device
•
Configure Tank Database with TankMaster WinSetup
•
Check or change cables
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 58.
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.
Make sure that the Modbus address of the field
device is configured for the right tank in the Tank
Database of the Rosemount 2460.
See "Tank Database configuration" on page
Open the Advanced Port Configuration window and
set Protocol to Autodetect.
Properties>Configuration>Advanced.
March 2017
"Write
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