Toshiba LF494 - Manual (Page 135)

TOSHIBA
6 F 8 A 0 7 7 4
12.2 Output Status for Errors and Alarms
The flowmeier datii display, current and puJsc outputs will become as follows if an error or
alarm occurs.
Krror or alarm
nuissage_____
ROM ERROR
(Note 1 )
RAM ERROR
PARAMETER FAIL
___________ (Note 2}
EX. CERR OPEN
EX.CURR ERROR
ADC. ERROR
EMPTY
Data
display
Zero
Zero
Zero
Zero
Zero
Cun^nt output
(4-20mA)
4mA
(Note 3}
Totali/cr and
pulse output
Stopped
Stopped
Stopped
Slopped
Stopped
Stnp[>cd
Stopped
Remarks
After piTwer-up,
no mcasurciticnl
starts,
Zero adjustment
(on-stream at zero
flow rate) cannot be
eomlucted.
Zero adjusimetit
{on-stream at ^cro
flow ratej cannot be
conducted.
INVALID TOTAL Measured
data
Measured
data
Measured
data
The error message
disappears if yen
clear (reset) I he
totalizer.
H.ALARM Measured
data
Measured
data
Measured
data
L.ALARM Measured
data
Ml:,^a5urcd
data
Measured
data
Notes
1 .
2 .
3.
The display and output may not be as indicated depending on the nature of the ROM error.
if parameters related to the current output are defective, the current output may not be
exactly 4mA.
[ji case of the converter for special specifications (refer lo 7.3.3 ‘‘Converter for Special
Specifications’"), select the value which he set 4-20mA Alarm Output. For detail, see See
e.2,ia""4-20mA Alarm Output ”,
- 1 3 4 -