Rockwell Automation 1794-APBDPV1 FLEX I/O PROFIBUS Adapter User Manual User Manual
Page 138
Publication 1794-UM064B-EN-P - May 2014
Additional HART Protocol Information 125
HART Protocol — Communication Error Code
Bit
Error Code
Description
7
Communications Error
If set, the field device has detected a communications
error. Bits 0…6 indicate the type of error.
6
Vertical Parity Error
The parity of one or more of the bytes received by the
HART field device is incorrect.
5
Overrun Error
At least one byte of data in the receive buffer of the
HART field device was over-written before it was read.
4
Framing Error
The stop bit of one or more bytes received by the HART
field device was not detected.
3
Longitudinal Parity Error
The longitudinal parity calculated by the HART field
device does not match the longitudinal parity byte at
the end of the packet.
2
Reserved
Set to 0.
1
Buffer Overflow
The packet is too long for the receive buffer of the
HART field device.
0
Undefined
Not defined.
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are beyond their limits and no longer represent the true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
Nonprimary 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.