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Tankvision Gauge Link
Endress+Hauser
8
Troubleshooting
8.1
Diagnostics
8.1.1
Use of fully wired serial cables
Use the cable as described in previous section and connect to the RS232 port of the
Tankvision Gauge Link and connect the other end to a laptop PC with a terminal emulation
program (e.g. Hyperterminal).
Set the terminal emulation program to the following communications settings:
Parameter
Setting
Baud rate
9600 Baud
Data bits
8
Parity
none
Stop bits
1
Flow control
none
Use the command DEBUG(return) to print the raw GPU (Enraf) or TRL/2 (SAAB) data on
the fieldbus. If the fieldbus is TRL/2 then the command S(return) may be required as the
TRL/2 messages maybe too long so the S Command will Shorten the data printed to hyper-
terminal.
If for any reason a firmware update is required, links (ISP and RST) within the Tankvision
Gauge Link need to be fitted and the use of flash magic to update the firmware. Details of
firmware updates will be supplied if firmware updates are required in the future.
8.2
Fault finding chart
Symptom
No LED indications:
POWER (
) LEDs not lit
FAULT (
) LED lit
FAULT (
) LED flashes
repeatedly
Host port RECEIVE (
) LED
appears to be "permanently" lit,
possibly flickers off for very short
time
Host port RECEIVE (
) LED does
not flicker / no activity
Possible cause
Mains power failure
Mains supply fuse ruptured
Internal fault
Internal fault
Internal fault
EIA-485 "A" / "B" data signal lines
"crossed"
No requests from host
Wiring fault between host and
Tankvision Gauge Link
Troubleshooting
Remedy
Investigate and rectify.
Investigate. If no fault evident,
replace fuse with new one of same
rating. If fuse immediately ruptures
or Tankvision Gauge Link does not
operate normally, return unit for
repair.
Return unit for repair.
Return unit for repair.
Return unit for repair.
Swap "A" / "B" connections at host
port connector.
Investigate and rectify.
Investigate and rectify.
35
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