Rockwell Automation 1770-HT8 SMART TRANSMITTER - Manual (Page 78)

Chapter 4
C Communicating with the Smart
Transmitter Interface
4-13
Table 4.D
HART Field Device Error Codes
Bit Error Code Description
7 Field Device Malfunction An internal hardware error or failure has been detected
by the HART field device.
6 Configuration Changed A write or set command has been executed by the
HART field device.
5 Cold Start Power has been removed and reapplied resulting in the
reinstallation of the setup information. The first HART
command to recognize this condition automatically
resets this flag. This flag may also be set following a
master reset or self test.
4 More Status Available More status information is available and can be read
using command #48, Read Additional Status
Information.
3 Primary Variable Analog
Output Fixed
The analog and digital outputs for the primary variable
are held at their requested value. They will not respond
to the applied process.
2 Primary Variable Analog
Output Saturated
The analog and digital outputs for the primary variables
are beyond their limits and no longer represent the true
applied process.
1 NonĆPrimary Variable Out of
Limits
The process applied to a sensor, other than that of the
Primary Variable, is beyond the operating limits of the
device. To identify the variable, use command #48,
Read Additional Status Information.
0 Primary Variable Out of
Limits
The process applied to the sensor for the primary
variable is beyond the operating limits of the device.
Data
This field contains the number of bytes of response data associated with
the command number specified in the command field. An application on
the host processor can use this data as required.
Check Byte
This one byte field contains a check byte which the Smart Transmitter
Interface uses to verify the validity of data received from the field device.
If the Smart Transmitter Interface detects a bad check byte, it resends
HART polls to the device until either a valid response is received or the
maximum number of retries have occurred.