Rockwell Automation 1756-OF8H ControlLogix HART Analog I/O Modules User Manual

Page 177

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Rockwell Automation Publication 1756-UM533C-EN-P - February 2011

177

Tag Definitions Appendix A

Ch09Data

REAL

Float

Value of analog signal on Channel 09 after conversion to engineering units.

Ch10Data

REAL

Float

Value of analog signal on Channel 10 after conversion to engineering units.

Ch11Data

REAL

Float

Value of analog signal on Channel 11 after conversion to engineering units.

Ch12Data

REAL

Float

Value of analog signal on Channel 12 after conversion to engineering units.

Ch13Data

REAL

Float

Value of analog signal on Channel 13 after conversion to engineering units.

Ch14Data

REAL

Float

Value of analog signal on Channel 14 after conversion to engineering units.

Ch15Data

REAL

Float

Value of analog signal on Channel 15 after conversion to engineering units.

CSTTimestamp

DINT[2]

Hex

Timestamp taken at the time the input data was sampled in terms of Coordinated System Time,
which is a 64-bit value in microseconds coordinated across the modules in the 1756 backplane.

RollingTimestamp

INT

Decimal

Timestamp taken at the time the input data was sampled in millisecond resolution.

HART

AB:1756_IF16H_HARTData:I:0, Contains HART field device health and dynamic process variables.

Ch00DeviceStatus

AB:1756_IF16H_HARTStatus_Struct:I:0, Channel 0 HART Device status info.

Init

BOOL

Searching for or Initializing HART device.
If this is 0 and Fail is 1, then HART is not Enabled on this channel.
If both are 1, then 1756-IF8H is sending out HART messages attempting to establish
communication with a HART device.

Fail

BOOL

HART communication failure or device not found or HART not enabled.
If this bit is 1, none of the other data in the HART part of the Input Tag are valid.
(HART.PVStatus will be set to 0 to also indicate this)

MsgReady

BOOL

Pass-through message reply is ready for Query service.

CurrentFault

BOOL

Analog current measurement does not match the current the Field Device reported over HART
network.

ConfigurationChanged

BOOL

The Field Device configuration has changed and new Field Device configuration information can be
obtained from the 1756-IF8H module via CIP MSG GetDeviceInfo, which will clear this bit.

ResponseCode

SINT

Binary

HART communication status byte or Response code from a recent HART reply. See

Response Code

and Field Device Status on page 195

for more information.

FieldDeviceStatus

SINT

Binary

HART device status byte from a recent HART reply. Indicates the health of the HART Field device.
See

Field Device Status Bit Mask Definitions on page 196

for more information.

ExtDeviceStatus

SINT

Binary

Extended device status byte.
Bit 0 is Maintenance Needed
Bit 1 is Device Variable Alert
Bit 2 is Low Power

Ch01DeviceStatus

AB:1756_IF16H_HARTStatus_Struct:I:0, Channel 01 HART Device status info.

Ch02DeviceStatus

AB:1756_IF16H_HARTStatus_Struct:I:0, Channel02 HART Device status info.

Ch03DeviceStatus

AB:1756_IF16H_HARTStatus_Struct:I:0, Channel 03 HART Device status info.

Ch04DeviceStatus

AB:1756_IF16H_HARTStatus_Struct:I:0, Channel 04 HART Device status info.

Ch05DeviceStatus

AB:1756_IF16H_HARTStatus_Struct:I:0, Channel 05 HART Device status info.

Ch06DeviceStatus

AB:1756_IF16H_HARTStatus_Struct:I:0, Channel 06 HART Device status info.

Ch07DeviceStatus

AB:1756_IF16H_HARTStatus_Struct:I:0, Channel 07 HART Device status info.

Ch08DeviceStatus

AB:1756_IF16H_HARTStatus_Struct:I:0, Channel 08 HART Device status info.

Ch09DeviceStatus

AB:1756_IF16H_HARTStatus_Struct:I:0, Channel 09 HART Device status info.

Ch10DeviceStatus

AB:1756_IF16H_HARTStatus_Struct:I:0, Channel 10 HART Device status info.

Ch11DeviceStatus

AB:1756_IF16H_HARTStatus_Struct:I:0, Channel 11 HART Device status info.

Ch12DeviceStatus

AB:1756_IF16H_HARTStatus_Struct:I:0, Channel 12 HART Device status info.

Table 64 - Analog and HART PV (AB:1756_IF16H_HARTPV:I:0)

Member Name

Type

Style

Description

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