Ultima MOS-5 Detector
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8.6.2 Exception Code
Exception Code Field: In a normal response, the Ultima MOS-5 Intelligent Sensor returns
data and status in the data field, which was requested in the query from the master. In an
exception response, the Ultima MOS-5 Intelligent Sensor returns an exception code in the data
field, which describes the Ultima MOS-5 Intelligent Sensor condition that caused the exception.
Below is a list of exception codes that are supported by the Ultima MOS-5 Intelligent Sensor:
Code Name Description
01 Illegal Function
The function code received in the query is not an
allowable action for the Ultima MOS-5 Intelligent
Sensor
02 Illegal Data Address
The data address received in the query is not an
allowable address for the Ultima MOS-5 Intelligent
Sensor.
03 Illegal Data Value
A value contained in the query data field is not an
allowable value for the Ultima MOS-5 Intelligent
Sensor.
04 Slave Device Failure
An unrecoverable error occurred while the Ultima
MOS-5 Intelligent Sensor was attempting to perform
the requested action.
05 Acknowledge
The Ultima MOS-5 Intelligent Sensor has accepted
the request and is processing it, but a long duration of
time will be required to do so. This response is
returned to prevent a timeout error from occurring in
the master.
06 Device Busy
The Ultima MOS-5 Intelligent Sensor is engaged in
processing a long-duration program command. The
master should retransmit the message later when the
slave is free.
Table 7: Exception Codes
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