LumaSense Technologies INNOVA 1309 - Manual (Page 32)

Chapter 3
________________________________________________________________________
________________________________________________________________________
BE1285-15 1309 Multipoint Sampler LumaSense Technologies A/S
Page 32 of 42
Power Fail Flag
Is set if the power is outside the range 13.25V to 15.75V. This flag is
reset when the voltage is back within the above range, or by resetting
the 1309, or switching the 1309 off and then on. If the error is persis-
tent, have the 1309 serviced.
3.7.5 The Error? Interface Job
This job reads-out an 8-bit byte (the Error Flags) which gives infor-
mation about errors which cause the 1309 to stop working. If any of
these errors exist, the 1309 is unable to function until the error is recti-
fied. The Error Flag byte is shown in Table 3.5.
Table 3.5 The 1309’s Error Flags byte
ERROR FLAGS
Bit no. Dec. Value Flag Description
1 1 ADC Flag
2 2 RAM Flag
3 4 PROM Flag
4 8 Not used
5 16 Not used
6 32 Job Specification Error
7 64 Software Error Flag
8 128 Power up Flag
Error Flags are set when the 1309’s self-check procedures identify an
error condition. This in turn sets bit 6 of the Status Byte (generating a
service request, if enabled) to indicate that an error condition exists.
The Error? job can then give more information about the cause of the
error condition.
Example:
Error? Outputs the Error Flags from the
1309. A “1” indicates that the flag is
set; a “0” indicates the flag is not
set.
The conditions which cause the Error Flags to be set are dealt with in
turn below.
ADC Flag
Is set when the ADC (analogue-digital converter) develops an error.
This results in a software-error, which automatically resets the 1309.
The flag is reset by reading-out the Error Flags, or by switching the
1309 off and then on. If the error persists, have the 1309 serviced.