Спецификация протокола Profibus
Подождите немного. Документ загружается.
Page 261
PROFIBUS-Specification-Normative-Parts-5:1997
Copyright by PNO 1997 - all rights reserved
Data Type Index
Logical address of the corresponding Data Type in the Static Type Dictionary
(ST-OD).
Length
Length in octets of the data.
Password
This attribute contains the password for the Access Rights.
Access Groups
This attribute relates the object to specific Access Groups. The object is a
group member when the corresponding bit is set.
Table 37. Access Groups for Simple Variable
+-----+----------------+
! Bit ! Meaning !
+-----+----------------+
! 7 ! Access Group 1 !
! 6 ! Access Group 2 !
! 5 ! Access Group 3 !
! 4 ! Access Group 4 !
! 3 ! Access Group 5 !
! 2 ! Access Group 6 !
! 1 ! Access Group 7 !
! 0 ! Access Group 8 !
+-----+----------------+
Access Rights
This attribute contains information about the Access Rights. The specific Access
Right exists when the corresponding bit is set.
Table 38. Access Rights for Simple Variable
+-----+------+--------------------------------------------------+
! Bit ! Name ! Meaning !
+-----+------+--------------------------------------------------+
! 7 ! R ! Right to Read for the registered Password !
! 6 ! W ! Right to Write for the registered Password !
! 3 ! Rg ! Right to Read for Access Groups !
! 2 ! Wg ! Right to Write for Access Groups !
! 15 ! Ra ! Right to Read for all Communication Partners !
! 14 ! Wa ! Right to Write for all Communication Partners !
+-----+------+--------------------------------------------------+
Local Address:
The Local Address is a system specific address of the real object. It serves the
internal addressing of the object. If no mapping of this kind is performed, this
attribute shall have the value FFFFFFFF hex.
Extension:
This attribute contains profile specific information.
Page 262
PROFIBUS-Specification-Normative-Parts-5:1997
Copyright by PNO 1997 - all rights reserved
Object Description of the OD on Transmission
+-------+---------+------------+--------+----------+---------+//
! Index ! Object ! Data Type ! Length ! Password ! Access !
! ! code ! Index ! ! ! Groups !
+-------+---------+------------+--------+----------+---------+
! 110 ! Var ! 3 ! 2 ! 17 ! !
+-------+---------+------------+--------+----------+---------+//
//+---------+----------+-------------+-----------+
! Access ! Local ! Variable ! Extension !
! Rights ! Address ! Name ! !
+---------+----------+-------------+-----------+
! Ra Wa ! A3E5 hex ! D. Krumsiek ! !
//+---------+----------+-------------+-----------+
Figure 60. Object Description of Simple Variable in the S-OD (Example)
Object Code
Tag for the Simple Variable Object, which is transmitted in addition to the ob-
ject attributes in the GetOD service and the PutOD service.
4.7.2.3 The Array Object
The Array Object consists of a collection of Simple Variables of the same Data
Type.
The Object Description of the Variable Access Object Array is stored statically
in the Object Dictionary (S-OD). The mapping of a PROFIBUS Array to a real Ar-
ray, which exists in the application system, is described by the object descrip-
tion of this object. The object description states the relation of the object to
the Data Type. Only one single Data Type of the set of configured Data Types is
allowed for all Array Elements.
The Array Object may be accessed completely or element by element. If the Object
shall be accessed completely the index shall be used for the service. If an ele-
ment of the object shall be accessed then the subindex shall be used together
with the index for the service. Subindex 1 accesses the first element of the ob-
ject.
+--------------------------------+
Index ! Object Description Array !
or ! !
Name ! +--------------+ ! +--------------+
------>!---->! Array !-- Index i -------->! Data Type !
! ! ! ! +--------------+
! +------+-------+ !
! ! real ! +--------------+
! +- Object address ---------->! real Array !
+--------------------------------+ +--------------+
Figure 61. Overview of Array
Page 263
PROFIBUS-Specification-Normative-Parts-5:1997
Copyright by PNO 1997 - all rights reserved
Services on the Object Array:
+--------------------+
- OD Services ------------------------>! Object Description !
! Array !
- Read \ ! !
- Write : ! +--------------+ !
- ReadWithType >---------->! Array ! !
- WriteWithType : ! ! ! !
- InformationReport : ! +--------------+ !
- InformationReportWithType / +--------------------+
Figure 62. Array Services
Attributes
Object: Array
Key Attribute: Index
Key Attribute: Variable Name
Attribute: Data Type Index
Attribute: Length
Attribute: Number Of Elements
Attribute: Password
Attribute: Access Groups
Attribute: Access Rights
Attribute: Local Address
Attribute: Extension
Index
Logical address of the object.
Variable Name
The name of the object. Its existence and its length is defined in the OD Object
Description.
Data Type Index
Logical address of the corresponding Data Type in the Static Type Dictionary.
Length
Length in octets of one Array Element.
Number Of Elements
States how many elements are contained in the Array.
Password
This attribute contains the password for the Access Rights.
Access Groups
This attribute relates the object to the specific Access Groups. The object is a
group member when the corresponding bit is set.
Access Rights
This attribute contains information about the Access Rights. The specific Access
Right exists when the corresponding bit is set.
Page 264
PROFIBUS-Specification-Normative-Parts-5:1997
Copyright by PNO 1997 - all rights reserved
Table 39. Access Groups for Array
+-----+----------------+
! Bit ! Meaning !
+-----+----------------+
! 7 ! Access Group 1 !
! 6 ! Access Group 2 !
! 5 ! Access Group 3 !
! 4 ! Access Group 4 !
! 3 ! Access Group 5 !
! 2 ! Access Group 6 !
! 1 ! Access Group 7 !
! 0 ! Access Group 8 !
+-----+----------------+
Table 40. Access Rights for Arrays
+-----+------+--------------------------------------------------+
! Bit ! Name ! Meaning !
+-----+------+--------------------------------------------------+
! 7 ! R ! Right to Read for the registered Password !
! 6 ! W ! Right to Write for the registered Password !
! 3 ! Rg ! Right to Read for Access Groups !
! 2 ! Wg ! Right to Write for Access Groups !
! 15 ! Ra ! Right to Read for all Communication Partners !
! 14 ! Wa ! Right to Write for all Communication Partners !
+-----+------+--------------------------------------------------+
Local Address
The Local Address is a system specific address of the real object. It serves the
internal addressing of the object. If no mapping of this kind is performed this
attribute shall have the value FFFFFFFF hex.
Extension
This attribute contains profile specific information.
Object Description of the OD on Transmission
+-------+--------+-----------+--------+------------+----------+//
! Index ! Object ! Data Type ! Length ! Number Of ! Password !
! ! code ! Index ! ! Elements ! !
+-------+--------+-----------+--------+------------+----------+
! 121 ! Array ! 5 ! 1 ! 6 ! 34 !
+-------+--------+-----------+--------+------------+----------+//
//+---------+---------+----------+-----------+-----------+
! Access ! Access ! Local ! Variable ! Extension !
! Groups ! Rights ! Address ! Name ! !
+---------+---------+----------+-----------+-----------+
! ! R W ! 1234 hex ! M. Braun ! !
//+---------+---------+----------+-----------+-----------+
Figure 63. Object Description of Array in the S-OD (Example)
Object Code
Tag for the Array Object, which is transmitted in addition to the object attrib-
utes in the GetOD service and the PutOD service.
Page 265
PROFIBUS-Specification-Normative-Parts-5:1997
Copyright by PNO 1997 - all rights reserved
4.7.2.4 The Record Object
The Record Object consists of a collection of Simple Variables of different Data
Types.
The Object Description of the Variable Access Object Record is stored dynami-
cally in the Object Description (S-OD).
The mapping of a PROFIBUS Record to a real Record, which exists in the applica-
tion system, is described by the object description of this object. The object
description states the relation of the object to a configured Data Type Struc-
ture Description.
The Record Object may be accessed completely or element-wise. If the Object
shall be accessed completely the index shall be used for the service. If an ele-
ment of the object shall be accessed then the subindex shall be used together
with the index for the service. Subindex 1 accesses the first element of the ob-
ject.
+--------------------------------+
! Object Description !
Index ! Record !
or ! !
Name ! +--------------+ ! +--------------+
------>!---->! Record !-- Index i -------->! Data Type !
! ! ! ! ! Structure !
! +------+-------+ ! ! Description !
! ! ! +--------------+
! ! real ! +--------------+
! +- Object address j -------->! real !
! ! ! ! Record !
! ! ! ! Element !
! ! ! +--------------+
! ! real ! +--------------+
! +- Object address n -------->! real !
! ! ! Record !
! ! ! Element !
+--------------------------------+ +--------------+
Figure 64. Overview of Record
Services on the Object Record:
+--------------------+
- OD Services ------------------------>! Object Description !
! Record !
- Read \ ! !
- Write : ! +--------------+ !
- ReadWithType >---------->! Record ! !
- WriteWithType : ! ! ! !
- InformationReport : ! +--------------+ !
- InformationReportWithType / +--------------------+
Figure 65. Record Services
Page 266
PROFIBUS-Specification-Normative-Parts-5:1997
Copyright by PNO 1997 - all rights reserved
Attributes
Object: Record
Key Attribute: Index
Key Attribute: Variable Name
Attribute: Data Type Index
Attribute: Password
Attribute: Access Groups
Attribute: Access Rights
Attribute: Extension
Attribute: List of Local Address
Attribute: Local Address
Index
Logical Address of the object.
Variable Name
The name of the object. Its existence and its length is defined in the OD Object
Description.
Data Type Index
Logical Address of the related Data Type Structure Description in the Static
Type Dictionary (ST-OD).
Password
This attribute contains the password for the Access Rights.
Access Groups
This attribute relates the object to specific Access Groups. The object is a
group member when the corresponding bit is set.
Table 41. Access Groups for Record
+-----+----------------+
! Bit ! Meaning !
+-----+----------------+
! 7 ! Access Group 1 !
! 6 ! Access Group 2 !
! 5 ! Access Group 3 !
! 4 ! Access Group 4 !
! 3 ! Access Group 5 !
! 2 ! Access Group 6 !
! 1 ! Access Group 7 !
! 0 ! Access Group 8 !
+-----+----------------+
Access Rights
This attribute contains information about the Access Rights. The specific Access
Right exists when the corresponding bit is set.
Table 42. Access Rights for Record
+-----+------+--------------------------------------------------+
! Bit ! Name ! Meaning !
+-----+------+--------------------------------------------------+
! 7 ! R ! Right to Read for the registered Password !
! 6 ! W ! Right to Write for the registered Password !
! 3 ! Rg ! Right to Read for Access Groups !
! 2 ! Wg ! Right to Write for Access Groups !
! 15 ! Ra ! Right to Read for all Communication Partners !
! 14 ! Wa ! Right to Write for all Communication Partners !
+-----+------+--------------------------------------------------+
Page 267
PROFIBUS-Specification-Normative-Parts-5:1997
Copyright by PNO 1997 - all rights reserved
Extension
This attribute contains profile specific information.
List of Local Address
This attribute contains the internal addresses of the Record Elements. These ad-
dresses are system specific addresses of the real objects. They serve the inter-
nal addressing of the objects. If the real objects are stored sequentially with-
out gaps, then only the Local Address (1) is given as start address. If no map-
ping of this kind is performed, this attribute shall be set to the value
FFFFFFFF hex.
Object Description of the OD on Transmission
+-------+---------+------------+----------+---------+---------+//
! Index ! Object ! Data Type ! Password ! Access ! Access !
! ! code ! Index ! ! Groups ! Rights !
+-------+---------+------------+----------+---------+---------+
! 111 ! Record ! 37 ! 34 ! ! R !
+-------+---------+------------+----------+---------+---------+//
//+---------------+-----------+-------------+-------------+//
! Variable ! Extension ! Local ! Local !
! Name ! ! Address (1) ! Address (2) !
+---------------+-----------+-------------+-------------+
! R. Breithaupt ! ! 43A7 hex ! 62AB hex !
//+---------------+-----------+-------------+-------------+//
//+-------------+-------------+-------------+
! Local ! Local ! Local !
! Address (3) ! Address (4) ! Address (5) !
+-------------+-------------+-------------+
! 3942 hex ! 2324 hex ! AC56 hex !
//+-------------+-------------+-------------+
Figure 66. Object Description of Record in the S-OD (Example)
Object Code
Tag for the Record Object, which is transmitted in addition to the object at-
tributes in the GetOD service and the PutOD service.
4.7.2.5 The Variable List Object
The Variable List Object consists of a collection of Variable Access Objects.
The Object Description of the Variable Access Object Variable List is stored dy-
namically in the Object Dictionary (DV-OD). This Object Description contains an
index list of Array, Record and Simple Variable Objects from the S-OD.
A Variable List may be created and deleted with the DefineVariableList and De-
leteVariableList services.
The Access Rights shall be declared for the DefineVariableList service. The Ac-
cess Rights to the single objects are checked on creation (DefineVariableList)
of a Variable List. The Variable List Object is only created if the requested
Access Rights do not exceed the Access Rights to the single objects.
If the same Variable List exists with the requested Access Rights, no new object
is created but the Logical Address of the existing object is given to the cli-
ent. In the other case the Variable List is created with the requested Access
Rights.
Only the authorized client with the proper Access Rights may delete a Variable
List Object (DeleteVariableList).
Page 268
PROFIBUS-Specification-Normative-Parts-5:1997
Copyright by PNO 1997 - all rights reserved
If the Object Dictionary is freshly loaded all Variable List Objects are de-
leted.
+--------------------------------+
! Object Description !
Index ! Variable-List !
or ! !
Name ! +--------------+ ! +--------------+
------>!---->! Variable !-- Index i -------->! Simple !
! ! List ! : ! ! Variable !
! ! ! : ! +--------------+
! ! ! : ! +--------------+
! ! !-- Index j -------->! Array !
! ! ! : ! ! !
! ! ! : ! +--------------+
! ! ! : ! +--------------+
! ! !-- Index m -------->! Record !
! +--------------+ ! ! !
+--------------------------------+ +--------------+
Figure 67. Overview of Variable List
Services on the Object Variable List:
- OD Services \ +--------------------+
- DefineVariableList >------------>! Object Description !
- DeleteVariableList / ! Variable List !
! !
- Read \ ! !
- Write : ! +--------------+ !
- ReadWithType >---------->! Variable ! !
- WriteWithType : ! ! List ! !
- InformationReport : ! +--------------+ !
- InformationReportWithType / +--------------------+
Figure 68. Variable List Services
Attributes
Object: Variable List
Key Attribute: Index
Key Attribute: Variable List Name
Attribute: Number Of Elements
Attribute: Password
Attribute: Access Groups
Attribute: Access Rights
Attribute: Deletable
Attribute: List of Element Index
Attribute: Index
Attribute: Extension
Index
Logical Address of the object.
Variable List Name
The name of the object. Its existence and its length is defined in the OD Object
Description.
Page 269
PROFIBUS-Specification-Normative-Parts-5:1997
Copyright by PNO 1997 - all rights reserved
Number Of Elements
This parameter states the number of Variable Access Objects of which the Vari-
able List consists.
Password
This parameter contains the password for the Access Rights.
Access Groups
This attribute relates the object to specific Access Groups. The object is a
group member when the corresponding bit is set.
Table 43. Access Groups for Variable List
+-----+----------------+
! Bit ! Meaning !
+-----+----------------+
! 7 ! Access Group 1 !
! 6 ! Access Group 2 !
! 5 ! Access Group 3 !
! 4 ! Access Group 4 !
! 3 ! Access Group 5 !
! 2 ! Access Group 6 !
! 1 ! Access Group 7 !
! 0 ! Access Group 8 !
+-----+----------------+
Access Rights
This attribute contains information about the Access Rights. The specific Access
Right exists when the corresponding bit is set.
Table 44. Access Rights for Variable List
+-----+------+--------------------------------------------------+
! Bit ! Name ! Meaning !
+-----+------+--------------------------------------------------+
! 7 ! R ! Right to Read for the registered Password !
! 6 ! W ! Right to Write for the registered Password !
! 5 ! D ! Right to Delete for the registered Password !
! 3 ! Rg ! Right to Read for Access Groups !
! 2 ! Wg ! Right to Write for Access Groups !
! 1 ! Dg ! Right to Delete for Access Groups !
! 15 ! Ra ! Right to Read for all Communication Partners !
! 14 ! Wa ! Right to Write for all Communication Partners !
! 13 ! Da ! Right to Delete for all Communication Partners !
+-----+------+--------------------------------------------------+
Deletable
This attribute indicates if the Variable List Object may be deleted (true) or
not (false) using the DeleteVariableList service.
List of Element Index
This attribute contains the indices of the Variable Access Objects which are
combined to this Variable List.
Extension
This attribute contains profile specific information.
Page 270
PROFIBUS-Specification-Normative-Parts-5:1997
Copyright by PNO 1997 - all rights reserved
Object Description of the OD on Transmission
+-------+----------+------------+----------+---------+//
! Index ! Object ! Number Of ! Password ! Access !
! ! code ! Elements ! ! Groups !
+-------+----------+------------+----------+---------+
! 220 ! Var-List ! 8 ! 34 ! !
+-------+----------+------------+----------+---------+//
//+---------+-----------+-----------+-----------+-----------+//
! Access ! Deletable ! Element ! Element ! Element !
! Rights ! ! Index (1) ! Index (2) ! Index (3) !
+---------+-----------+-----------+-----------+-----------+
! R W D ! true ! 142 ! 127 ! 158 !
//+---------+-----------+-----------+-----------+-----------+//
//+-----------+-----------+-----------+-----------+-----------+//
! Element ! Element ! Element ! Element ! Element !
! Index (4) ! Index (5) ! Index (6) ! Index (7) ! Index (8) !
+-----------+-----------+-----------+-----------+-----------+
! 172 ! 108 ! 196 ! 134 ! 188 !
//+-----------+-----------+-----------+-----------+-----------+//
//+-----------+-----------+
! Variable ! Extension !
! List Name ! !
+-----------+-----------+
! Z. Szabo ! !
//+-----------+-----------+
Figure 69. Object Description of Variable List in the DV-OD (Example)
Object Code
Tag for the Variable List Object, which is transmitted in addition to the object
attributes for the GetOD service and the PutOD service.
4.7.2.6 The Data Type Object
A Data Type characterises a set of values and a set of operations that may be
applied to these values. The Data Type defines the syntax, the range of the
variables and their presentation inside the communication system. The Data Type
of an object is indicated by a corresponding attribute in the Object Descrip-
tion. Type definitions may not be made remotely for reasons of efficiency. They
have a fixed configuration in the Static Type Dictionary (ST-OD).
The PROFIBUS Specification defines free configurable Data Types and Standard
Data Types. They are stored beginning with Index 1 in the Static Type Dictionary
(ST-OD). Standard Data Types which are not used are marked as not configured in
the ST-OD (see also data type object presentation in the OD).
Services on the Data Type Object:
- none