Spectrum-controls 1734sc-OE2CIH Bedienungsanleitung PDF herunterladen (Seite 41)

Chapter 4: OE2CIH and HART 4-5

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

All three interface types have equal priority:

 The User Ladder interface uses a simplified HART interface (EZ-HART) that

only requires the user to send the HART Command number along with its data

bytes (if any) in the request data for the Init Pass-through message without

having to know how to format a real HART message. In addition the Ladder

interface has a MsgReady indicator tag in the Input table to facilitate

determining when the pass-through is complete.

 The RSLogix and Asset SW interfaces require creating a complete HART

message (without preambles) as defined by the HART protocol specifications.

A pass-through message is processed with equal priority with the Device Variable scan

command (3 or 9) so the scanning on any one channel looks like this:

4.2.5 Identity Object

This object class supports the Reset service.

Table 4-3 Identity Object

Class Code:

0×01

Instance(s):

#1=entire module

Class Attributes:

None

Class Services:

None

Instance Attributes:

Instance

Attribute:

ID:

Data Type:

1734sc-OE2CIH

Notes:

Vendor ID:

UINT

Spectrum Controls

Vendor ID

Product Type:

UINT

Obsolete by ODVA

Product Code:

UINT

Revision:

STRUCT

(Major Rev)

USINT

Initial release will be

1.1

(Minor Rev)

USINT

Status

WORD

Dynamic

Serial Number

UDINT

Unique per module

0×1300xxxx

Product Name

STRUCT

(length)

USINT

(text)

String[28]

1734sc-OE2CIH 2 PT HART

OUTPUT

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 73 74

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