HART Commands - Ifea
HART Commands - Ifea
HART Commands - Ifea
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Communication Error<br />
AI<br />
AO<br />
Transmitter Communication Failures<br />
If (bit 7) of status byte-1 is set to 1 the transmitter has a communication problem.<br />
Details of the error are reported in the rest of the bits (6-0). Status byte-2 is then all zeros.<br />
Status Byte-1<br />
7 6 5 4 3 2 1 0<br />
Bit 6 hex C0 Parity error<br />
Bit 5 hex A0 Overrun error<br />
Bit 4 hex 90 Framing error<br />
Bit 3 hex 88 Checksum error<br />
Bit 2 hex 80 Always 0 (reserved)<br />
Bit 1 hex 82 Rx buffer overflow<br />
Bit 0 hex 81 Always 0 (undefined)<br />
Status Byte-2<br />
1 x x x x 0 x 0<br />
0 0 0 0 0 0 0 0<br />
7 6 5 4 3 2 1 0<br />
When status byte-1, bit-7 is a 1,<br />
all bits in Status byte-2 are set to zero.<br />
38 HONEYWELL 38<br />
September 19, 2012
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