Endress+Hauser Tankvision Gauge Link NXA20, Руководство по эксплуатации

Страница: 35 / 40

Tankvision Gauge Link Troubleshooting
Hauser 35
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:
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
Parameter Setting
Baud rate 9600 Baud
Data bits 8
Parity none
Stop bits 1
Flow control none
Symptom Possible cause Remedy
No LED indications:
POWER (
) LEDs not lit
Mains power failure Investigate and rectify.
Mains supply fuse ruptured 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.
Internal fault Return unit for repair.
FAULT ( ) LED lit Internal fault Return unit for repair.
FAULT ( ) LED flashes
repeatedly
Internal fault Return unit for repair.
Host port RECEIVE ( ) LED
appears to be “permanently” lit,
possibly flickers off for very short
time
EIA-485 “A” / “B” data signal lines
“crossed” Swap “A” / “B” connections at host
port connector.
Host port RECEIVE ( ) LED does
not flicker / no activity
No requests from host Investigate and rectify.
Wiring fault between host and
Tankvision Gauge Link
Investigate and rectify.