Rockwell-automation 1794-APBDPV1 FLEX I/O PROFIBUS Adapter User Manual Uživatelský manuál stáhnout pdf (Strana 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are beyond their limits and no longer represent the true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.

1 2 ... 133 134 135 136 137 138 139 140 141 142 143 ... 152 153

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