User's Manual

Service and troubleshooting
Page 40
4.5 Error codes and status information
The 973 SmartRadar LT is an instrument with error reporting. Detected errors can be requested by the 847
PET (optional) or by the service tool Ensite.
The following items provide the error data of the processor boards:
EB
Error request RFB-2 / DAB board
EE
Error request ICU board (APU part)
EP
Error request ICU board (XPU-2 part)
WC
Warning code ICU board (APU part) (not a real error, but a warning that the level may not be
accurate)
These items contain an error (warning) code of the last occurred error condition. The error data can be read
as long as the gauge is not reset.
Besides the error data, data items from level, and optional functions such as temperature and analog level
output, contain one or more status characters which also give valuable information. Most status characters
are bit coded. Appendix B contains an ASCII table for conversion of a status character into bits.
Bits are numbered from 0 to 7 from right to left.
An example for a bit coded status character:
a status character reads:
F
;
written out in bits (refer to Appendix B):
0100 0110
;
(b7=0, b6=1, b5=0, b4=0, b3=0, b2=1, b1=1, b0=0).
Bit 7 is always a '0' and bit 6 is always a '1', to avoid 'control' characters.
Look up the description of the particular error (e.g.
QR
in section 4.5.2) to find the description of the
meanings allocated to each bit of the character. Only the bits set to '1' represent an actual status.
4.5.1 XPU-2 error code (item EP) of ICU board
The XPU-2 error code is a three-digit number. When the XPU-2 detected an error about a certain item, that
item follows the error code, separated by a space.
For instance: 067 LL : invalid level format in item
LL
.
Some ICU (XPU-2 part) error codes of item
EP
are listed below, with suggestions for solving the problem.
For a complete overview, refer to item help in the service tool Ensite.
000 No error
014 NOVRAM operation error Set item 03 to’@‘; Check all settings, there may be an error
051 Unknown item Item not known to SmartRadar LT, check for correct item
056 Wrong protection level First enter protection level 1 or 2
067 Invalid level format Check item LD, then give the setting in the correct level format
075 Invalid density format Check item DI, then give the setting in the correct density format
076 Invalid floating point format Give setting in correct floating point format (refer section to 3.3.1)
082 Invalid password Give the correct password for W1 and W2
089 Invalid pressure format Check item PI, then give setting in the correct pressure format
101 Watchdog reset error The watchdog reset is a sign that there is a serious fault, caused by
interference, or a faulty ICU board
137 No optional board Missing optional board; either not well connected to the ICU board, or
optional board is defective
200 Invalid indexed item format Wrong indexed item format; use points between indexes
201 Invalid indexed item start index Wrong indexed item element number; too large or invalid
202 Invalid indexed item index length Wrong indexed item length; can be between “1” and “9”
999 Fatal ICU error Serious internal ICU software error; check contents of item 00 and
report to Enraf Delft