Rockwell-automation 1794-OF8IH FLEX Isolated Input/Output HART Analog Manual do Utilizador descarregar pdf (Página 98)

Publication 1794-UM065B-EN-E - September 2010

86 Configure Module Messaging

Get Device Info Block 4 Message

9 SVUnits (1 byte) CMD#3, Byte 9; Set to 0 if

device does not return a

value for SV.

10 TVUnits (1 byte) CMD#3, Byte 14; Set to 0 if

device does not return a

value for TV.

11 FVUnits (1 byte) CMD#3, Byte 19; Set to 0 if

device does not return a

value for FV.

12 PVRangeUnits (1 byte) CMD#15, Byte 2

13 Pad_8 alignment (1 byte)

14 HARTPreamble (1 byte) CMD#0, Byte 3

15 HARTFlages (1 byte) CMD#0, Byte 8

(1)

Data in offsets 4…15 will be set to 0 if Status in offset 0 indicates a problem (Status = 0x86 or 0x87).

Get Device Information Block 4 Message – Request Packet Structure

Field Value Definition

Message Type "CIP Generic"

Service Type Get Attribute Single Read From Module

Service Code 0x0E

Class Name 0x7D FLEX Module Object

Instance 1…8 (Module next to Adapter = 1) Module Location

Object Attribute 0x8A = Channel 0 (Add 4 for next channel)

0x8E = Channel 1

0x92 = Channel 2

0x96 = Channel 3

0x9A = Channel 4

0x9E = Channel 5

0xA2 = Channel 6

0xA6 = Channel 7

Selects Channel that the

data is from

Reply Size 38 bytes

Request Size 0

Get Device Information Block 3 Message – Reply Packet Structure

Offset

(1)

Field Value Definition

1 2 ... 93 94 95 96 97 98 99 100 101 102 103 ... 163 164

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Rockwell-automation 1794-OF8IH FLEX Isolated Input/Output HART Analog Manual do Utilizador Página 98