Spectrum-controls 1734sc-IE2CH Manual de usuario descargar pdf (Pagina 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.

1 2 ... 58 59 60 61 62 63 64 65 66 67 68 ... 83 84

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