Ultima MOS-5 Detector
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8.9.10 Overrun Errors (28H)
A read indicates the number of hardware UART overrun errors that occurred in the slave
device. When the counter for these errors reaches 65535, it rolls over to zero and begins
counting again.
8.9.11 Framing Errors (29H)
A read indicates the number of hardware UART framing errors that occurred in the slave
device. When the counter for these errors reaches 65535, it rolls over to zero and begins
counting again.
8.9.12 Total Software CH1 Errors (2AH)
A read indicates the number of address or data errors that occurred in the slave device. When
the counter for these errors reaches 65535, it rolls over to zero and begins counting again.
8.9.13 Not Used (2BH)
8.9.14 Clear Hardware Errors (2CH)
Clear parity, framing, and overrun errors.
8.9.15 Clear Communication Errors (2DH)
8.9.15.1 HART Low Current Select (2EH)
Normally in HART mode the low current does not decrease below 3.5 mA. If use of current
levels below 3.5mA is required by an application, the Ultima MOS-5 Intelligent Sensor
features and expanded scale that permits faults to be set as low as 1.25 mA. A read returns
“1” or “0.”
Condition
HART Current Normal
HART Expanded Scale
Run
4 to 20 mA
4 to 20 mA
Off Line
3.5 mA
1.5 mA
Fault
3.5 mA
1.25 mA
8.9.15.2 Internal Use (2FH)
8.9.15.3 Event Logging (30H to 5FH)
Faults
•
Whenever the fault word changes, the time is recorded.
•
Time of fault is saved.
•
The quantity of faults is saved in a counter.
•
When the fault is removed, it is not saved and the counter is not incremented.
•
A fault event is logged for every 30 seconds recorded.
•
There are a total of ten event time stamps stored.
