IEC PAS 62453-4:2006
(Main)Field Device Tool (FDT) interface specification - Part 4: HART communication
Field Device Tool (FDT) interface specification - Part 4: HART communication
provides information for integrating the HART protocol into the FDT interface specification (IEC 62453-1). This PAS neither contains the FDT specification nor modifies it.
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PAS 62453-4
SPECIFICATION
First edition
Pre-Standard
2006-05
Field Device Tool (FDT) interface specification –
Part 4:
HART communication
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IEC/PAS 62453-4:2006(E)
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PUBLICLY
IEC
AVAILABLE
PAS 62453-4
SPECIFICATION
First edition
Pre-Standard
2006-05
Field Device Tool (FDT) interface specification –
Part 4:
HART communication
IEC 2006 Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
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– 2 – PAS 62453-4 © IEC:2006
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope .6
2 Normative references .6
3 Provided data .6
3.1 Interface IDtmParameter.6
3.2 SingleDataAccess interfaces.6
4 Protocol specific usage of XML attributes.6
5 Bus category .7
6 FDT sequence charts.7
6.1 HART burst mode subscription.7
7 HARTCommunicationSchema .9
8 ChannelParameterSchema .14
9 Topology scan schema .17
10 HART device identification.18
10.1 FDTHARTIdentSchema.18
10.2 FDTHARTScanIdentSchema .22
10.3 FDTHARTDeviceTypeIdentSchema.24
BIBLIOGRAPHY .26
Figure 1 – HART burst mode subscription .8
Table 1 – Protocol specific usage of XML attributes.6
Table 2 – HARTCommunicationschema – attributes and elements .9
Table 3 – ChannelParameterSchema .14
Table 4 – FDTHARTIdentSchema – attributes with protocol specific mapping.18
Table 5 – FDTHARTIdentSchema – attributes without protocol independent semantics .20
Table 6 – FDTHARTIdentSchema – attributes and elements with protocol independent
semantics .21
Table 7 – FDTHARTScanIdentSchema – attributes and elements .22
Table 8 – FDTHARTDeviceTypeIdentSchema attributes and elements .24
PAS 62453-4 © IEC:2006 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Field Device Tool (FDT) interface specification –
Part 4: HART communication
FOREWORD
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A PAS is a technical specification not fulfilling the requirements for a standard but made
available to the public.
IEC-PAS 62453-4 has been processed by subcommittee 65C: Digital communications, of IEC
technical committee 65: Industrial-process measurement and control.
The text of this PAS is based on the This PAS was approved for
following document: publication by the P-members of the
committee concerned as indicated in
the following document
Draft PAS Report on voting
65C/398A/NP 65C/411/RVN
Following publication of this PAS, which is a pre-standard, the technical committee or
subcommittee concerned will transform it into an International Standard.
– 4 – PAS 62453-4 © IEC:2006
This PAS shall remain valid for an initial maximum period of three years starting from
2006-05. The validity may be extended for a single three-year period, following which it shall
be revised to become another type of normative document or shall be withdrawn.
IEC 62453 consists of the following parts under the general title Field Device Tool (FDT)
interface specification:
Part 1: Concepts and detailed description
Part 2: INTERBUS communication
Part 3: PROFIBUS communication
Part 4: HART communication
Part 5: FOUNDATION FIELDBUS communication
PAS 62453-4 © IEC:2006 – 5 –
INTRODUCTION
This PAS is an interface specification for developers of FDT components for Function Control
and Data Access within a Client Server architecture. The specification is a result of an
analysis and design process to develop standard interfaces to facilitate the development of
servers and clients by multiple vendors that shall inter-operate seamlessly.
With the integration of fieldbusses into control systems, there are a few other tasks which
must be performed. This applies to fieldbusses in general. Although there are fieldbus- and
device-specific tools, there is no unified way to integrate those tools into higher level system-
wide planning or engineering tools. In particular, for use in extensive and heterogeneous
control systems, typically in the area of the process industry, the unambiguous definition of
engineering interfaces that are easy to use for all those involved, is of great importance.
A device-specific software component, called DTM (Device Type Manager), is supplied by the
field device manufacturer with its device. The DTM is integrated into engineering tools via the
FDT interfaces defined in this specification. The approach to integration is in general open for
all kind of fieldbusses and thus meets the requirements for integrating different kinds of
devices into heterogeneous control systems.
– 6 – PAS 62453-4 © IEC:2006
Field Device Tool (FDT) interface specification –
Part 4: HART communication
1 Scope
This part of IEC 62435 provides information for integrating the HART protocol into the FDT
interface specification (IEC 62453-1). This PAS neither contains the FDT specification nor
modifies it.
2 Normative references
The following referenced documents are indispensable for the application of this PAS. For
dated references, only the edition cited applies. For undated references, the latest edition of
the referenced document (including any amendments) applies
IEC 62453-1: Field Device Tool (FDT) interface specification – Part 1: Concepts and detailed
description
3 Provided data
3.1 Interface IDtmParameter
The minimum set of provided data should be:
• The first four provided process related values (PV, SV, …) - if available - are modeled as
channel references. The referenced channel must include ranges and scaling.
3.2 SingleDataAccess interfaces
At least all parameters of the Universal and Common Practice (as far as the device supports
the function) commands must be exposed via the interfaces IDtmSingleDeviceDataAccess
and IDtmSingleInstanceDataAccess.
Furthermore the Response Byte 0 and the Response Byte 1 for each command must be
exposed.
4 Protocol specific usage of XML attributes
The following Table 1 shows how general attributes are used with HART devices.
Table 1 – Protocol specific usage of XML attributes
Attribute Description for use in HART
address The address attribute (defined in FDTDataTypesSchema.xml) is not mandatory
for the exposed parameters in the DTMs. But if the address attribute is used
the string must be constructed according to the rules of the semanticId. That
means the attribute ‘semanticId’ is always the same as the attribute ‘address’
busCategory See Clause 5
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HART ® is the trade name of the a product supplied byHART Communication Foundation. This information is
given for convenience of users of this document and does not constitute an endorsment by IEC
...
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