Spectrum Controls 1734sc-IE2CH - Manual (Page 63)

Appendix B: Additional HART Protocol Information B-3
User’s Manual Pub. 0300257-01 Rev. A
Response Code Description
If Bit 7 is And Bits
6…0 are
1 16#20 Overrun Error Overrun error - At least one byte of data in the receive
buffer of the UART was overwritten before it was read
(for example, the slave did not process incoming byte fast
enough)
1 16#10 Framing Error Framing error - The Stop Bit of one or more bytes
received by the device was not detected by the UART (for
example, a mark or 1 was not detected when a Stop Bit
should have occurred)
1 16#08 Checksum Error Longitudinal parity error -The Longitudinal Parity
calculated by the device did not match the Check Byte at
the end of the message
1 16#04 (Reserved) Reserved - Set to zero
1 16#02 RX Buffer Overflow
Buffer overflow -The message was too long for the
receive buffer of the define
1 16#01 (undefined) Reserved - Set to zero
0 0 No command specific error
0 1 (undefined)
0 3 Value too large
0 4 Value too small
0 5 Not enough bytes in command
0 6 Transmitter-specific command error
0 7 In Write-protect mode
0 8 Update Failed - Update In Progress - Set to Nearest Possible Value
0 9
Applied Process Too High - Lower Range Value Too High - Not In Fixed Current
Mode
0 10
Applied Process Too Low - Lower Range Value Too Low - MultiDrop Not
Supported
0 11
In MultiDrop Mode - Invalid Transmitter Variable Code - Upper Range Value Too
High
0 12 Invalid Unit Code -Upper Range Value Too Low
0 13 Both Range Values Out of Limits
0 14 Pushed Upper Range Value Over Limit - Span Too Small
0 16 Access restricted
0 32 Device busy
0 64 Command not implemented
If no error was detected in the outgoing communication, the second byte contains status
information pertaining to the operational state of the field or slave device.
Table B-2 (Field Device Status – HART Device Status Byte 2)
Bit Bit Mask Definition
7 16#80
Device malfunction - The device detected a serious error or failure that compromises device
operation
6 16#40 Configuration changed -An operation was performed that changed the device’s configuration
5 16#20 Cold start - A power failure or device reset occurred
4 16#10
More status available - More status information is available via command 48, Read
Additional Status Information
3 16#08
Loop current fixed - The loop current is being held at a fixed value and is not responding to
process variations
2 16#04
Loop current saturated - The loop current has reached its upper or lower endpoint limit and
cannot increase or decrease any further
1 16#02
Non-primary variable out of limits - A device variable not mapped to the PV is beyond its
operating limits
0 16#01 Primary variable out of limits - The PV is beyond its operating limit
Note: 16# means this number is in Hex.