Spectrum-controls 1734sc-OE2CIH Bedienungsanleitung PDF herunterladen (Seite 54)

4-18 Chapter 4: OE2CIH and HART

User’s Manual Pub. 0300272-01 Rev. A.0

Table 4-13 Read Dynamic Variables (Service Code = 4B)

Unconnected Message

Field

Value

Definition

Message Type

CIP Generic

Service Code

0×4B

Get Device

Information

Class Name

0×035D

HART Object

Instance

1 to n

Selects channel n-1

Object Attribute

None, leave this field blank

Request Size

No Request Data

Reply Size

2 to 36 bytes

(2) Size when information not available

(36) Size when valid Information returned

Number of Data

bytes returned

Request Data

HART Read Dynamic Variables - Request packet structure

Request Size = 0

Offset

Field

Value

Definition

No Request Data

Request Failed Reply

HART Read Dynamic Variables - Reply packet structure

Reply Size = 2

Offset

Field

Value

Definition

Status

34 = DR_RUNNING

(No Device or

connection process

not completed)

35 = DR_DEAD

(Channel is not HART-

enabled)

Command status

Pad

Pad byte

1 2 ... 49 50 51 52 53 54 55 56 57 58 59 ... 73 74

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