Spectrum-controls 1734sc-OE2CIH Instrukcja Użytkownika Pobierz pdf (Strona 62)

4-26 Chapter 4: OE2CIH and HART

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

Reply Data

HART Ladder Passthrough Query - Reply packet structure

Reply Size = 6 to 260 bytes

Offset

Field

Value

Definition

Status

00 = Success

34 = DR_RUNNING

35 = DR_DEAD

Query Status

HART Command

0 to 255 (1 byte)

Echo of HART command

HART CommStatus

(1 byte)

HART Reply Status Byte #1

HART

FieldDeviceStatus

Reason Code if

status = 35

(1 byte)

HART Reply Status Byte #2

Reason Code is a diagnostic value

returned when message fails (Status

= 35)

Data Size

0 to 255 (1 byte)

Number of Data bytes in reply for

HART command

5 to

257

HART Reply

Data …

Data bytes returned in data field of

HART reply to requested command

Table 4-18 Flush Ladder Queue (Service Code = 0×50)

Unconnected Message

Field

Value

Definition

Message Type

CIP Generic

Service Code

0×50

Flush Queues

Class Name

0×035D

HART Object

Instance

0 = All Channels

1 to n = Single Channel(n-1)

All channels at once

or a single channel

Object Attribute

None, leave this field blank

Request Size

No Request Data

Reply Size

Number of Data

bytes returned

Request Data

HART Flush Ladder Queue - Request packet structure

Request Size = 0

Offset

Field

Value

Definition

No Request Data

Reply Data

Set Flush Ladder Queue - Reply packet structure

Reply Size = 0 bytes

Offset

Field

Value

Definition

1 2 ... 57 58 59 60 61 62 63 64 65 66 67 ... 73 74

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