Спецификация протокола Profibus
Подождите немного. Документ загружается.
Page 281
PROFIBUS-Specification-Normative-Parts-5:1997
Copyright by PNO 1997 - all rights reserved
Result(-)
The Result(-) shall indicate that the service request was not completed success-
fully.
Error Type
This parameter contains information about the reason why the service was not
completed successfully.
4.7.3.9 WriteWithType
Values are written in the objects Simple Variable, Array, Record and Variable
List with this service. A Data Type Description is added to the data that is to
be written. Single elements of Arrays and Records may be accessed with the
subindex.
Table 53. WriteWithType
+---------------------------------+-----+-----+
! ! ! !
! Parameter Name !.req !.res !
! !.ind !.con !
+---------------------------------+-----+-----+
! Argument ! M ! !
! Access Specification ! M ! !
! Index ! S ! !
! Variable Name ! S ! !
! Variable List Name ! S ! !
! Subindex ! U ! !
! Type Description ! M ! !
! Data ! M ! !
! ! ! !
! Result(+) ! ! S !
! ! ! !
! Result(-) ! ! S !
! Error-Type ! ! M !
+---------------------------------+-----+-----+
Argument
The argument contains the service specific parameters of the service request.
Access Specification
This parameter states if the index or the name is used for addressing.
Index
Logical Address of the object.
Variable Name
This parameter is the name of the Variable Object.
Variable List Name
This parameter is the name of the Variable List Object.
Subindex
This parameter contains the logical sub-address of the object.
Typedescription
This parameter contains the Data Type Description.
Data
The data that is to be written. The data of the object shall be mapped onto the
parameter data according to the description of the Data Types in the coding
chapter.
Page 282
PROFIBUS-Specification-Normative-Parts-5:1997
Copyright by PNO 1997 - all rights reserved
Result(+)
The Result(+) parameter shall indicate that the service was completed success-
fully.
Result(-)
The Result(-) shall indicate that the service request was not completed success-
fully.
Error Type
This parameter contains information about the reason why the service was not
completed successfully.
4.7.3.10 InformationReportWithType
Values and the Data Type Description of the objects Simple Variable, Array, Rec-
ord and Variable List are transmitted using the InformationReport service. The
execution of this service is not confirmed by the communication partner. Single
elements of Arrays and Records may be accessed with the subindex.
This Service may be mapped in LLI to Layer 2 broadcast or multicast. Thus it is
possible to transmit values to all or to some stations in the network.
Table 54. InformationReportWithType
+---------------------------------+-----+
! ! !
! Parameter Name !.req !
! !.ind !
+---------------------------------+-----+
! Argument ! M !
! Priority ! M !
! Access Specification ! M !
! Index ! S !
! Variable Name ! S !
! Variable List Name ! S !
! Subindex ! U !
! Type Description ! M !
! Data ! M !
+---------------------------------+-----+
Argument
The argument contains the service specific parameters of the service request.
Priority
This parameter indicates the priority for this service. It may have the values
true: high priority
false: low priority
Access Specification
This parameter states if the index or the name is used for addressing.
Index
Logical Address of the object in the Source OD.
Variable Name
This parameter is the name of the Variable Object.
Variable List Name
This parameter is the name of the Variable List Object.
Page 283
PROFIBUS-Specification-Normative-Parts-5:1997
Copyright by PNO 1997 - all rights reserved
Subindex
This parameter contains the logical sub-address of the object.
Typedescription
This parameter contains the Data Type Description.
Data
This parameter contains the data. The data of the object shall be mapped onto
the parameter data according to the description of the Data Types in the coding
chapter.
4.8 Event Management
4.8.1 Model Description
The Event serves for sending an important message from one device to another (or
in broadcast mode to all other devices). The detection of the conditions that
cause an event is responsibility of the user. The application program invokes
the EventNotification service when the conditions are met. The monitoring and
checking of the (optional) acknowledgement is the responsibility of the user.
+--------------------------------+ +--------------+
! Object Description ! +--->! Simple !
Index ! Event ! ! ! Variable !
or ! ! or +--------------+
Name ! +--------------+ ! ! +--------------+
------>!---->! Event !-- Index i ----+--->! Array !
! ! ! ! or +--------------+
! +--------------+ ! ! +--------------+
+--------------------------------+ +--->! Record !
or +--------------+
! +--------------+
+--->! Data Type !
or +--------------+
! +--------------+
+--->! Data Type !
! Structure !
! ! Description !
! +--------------+
! +--------------+
+--->! !
! Null Object !
+--------------+
Figure 74. Overview of Event
Services on the Object Event:
+--------------------+
- OD Services ------------------------->! Object Description !
! Event !
- AlterEventConditionMonitoring \ ! +--------------+ !
- EventNotification >------->! Event ! !
- EventNotificationWithType / ! +--------------+ !
- AcknowledgeEventNotification / +--------------------+
Figure 75. Event Services
An user sends an event notification with the EventNotification service. The user
transmits with the EventNotification service a counter value (Event Number) and
optionally data (Event Data), e.g. measurement value, status, units.
Page 284
PROFIBUS-Specification-Normative-Parts-5:1997
Copyright by PNO 1997 - all rights reserved
The management (incrementation) of the counter value is the responsibility of
the user. The Event Notification may represent a collective alarm, where the
data may contain information about which channel has triggered the collective
alarm. Also in this case the logical operations for the triggering conditions
and for the data are part of the application program. The receiver of the Event
Notification may acknowledge the EventNotification by using the Acknowl-
edgeEventNotification service.
The counter value is transmitted with the AcknowledgeEventNotification service.
The counter value serves to reliably correlate the EventNotification and the Ac-
knowledgeEventNotification. The monitoring and the checking of the acknowledge-
ment is the responsibility of the user.
The receiver of the EventNotification may lock or unlock the EventNotification
using the AlterEventConditionMonitoring service.
4.8.2 The Event Object
4.8.2.1 Attributes
Object: Event
Key Attribute: Index
Key Attribute: Event Name
Attribute: Index Event Data
Attribute: Length
Attribute: Password
Attribute: Access Groups
Attribute: Access Rights
Attribute: Enabled
Attribute: Extension
Index
Logical Address of the Event Object.
Event Name
The name of the Object. Its existence and its length is defined in the OD Object
Description.
Index Event Data
Index for Event Data. This entry defines the index for reading of the Event
Data, or it defines under which index the Object Description of the Data Type or
the Object Description of the Data Type Structure Description of the Event Data
may be read. In the case that no data exist for this event object the Index
Event Data shall contain the index of a Null object.
Length
If the Index Event Data points to a Data Type then this attribute contains the
length in octets of the Event Data. This attribute is not significant otherwise.
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.
Page 285
PROFIBUS-Specification-Normative-Parts-5:1997
Copyright by PNO 1997 - all rights reserved
Table 55. Access Groups for Event
+-----+----------------+
! 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 56. Access Rights for Events
+-----+------+--------------------------------------------------+
! Bit ! Name ! Meaning !
+-----+------+--------------------------------------------------+
! 6 ! W ! Right to Acknowledge for the registered Password !
! 5 ! D ! Right to Enable/Disable for the registered !
! ! ! Password !
! 2 ! Wg ! Right to Acknowledge for Access Groups !
! 1 ! Dg ! Right to Enable/Disable for Access Groups !
! 14 ! Wa ! Right to Acknowledge for all Communication !
! ! ! Partners !
! 13 ! Da ! Right to Enable/Disable for all Communication !
! ! ! Partners !
+-----+------+--------------------------------------------------+
Enabled
Status of the Event Object according to the state machine.
Enabled = true <=> UNLOCKED
Enabled = false <=> LOCKED
Extension
This attribute contains profile specific information.
4.8.2.2 Object Description of the OD on Transmission
+-------+--------+------------+--------+----------+-----------+//
! Index ! Object ! Index ! Length ! Password ! Access !
! ! code ! Event Data ! ! ! Groups !
+-------+--------+------------+--------+----------+-----------+
! 130 ! Event ! 39 ! 2 ! 17 ! !
+-------+--------+------------+--------+----------+-----------+//
//+-----------+---------+-----------+-----------+
! Access ! Enabled ! Event ! Extension !
! Rights ! ! Name ! !
+-----------+---------+-----------+-----------+
! W D ! ! V. Buding ! !
//+-----------+---------+-----------+-----------+
Figure 76. Object Description of Event in the S-OD (Example)
Page 286
PROFIBUS-Specification-Normative-Parts-5:1997
Copyright by PNO 1997 - all rights reserved
Object Code
Tag for the Event Object which is transmitted in addition to the object attrib-
utes for the GetOD and the PutOD service.
4.8.3 Event Management Services
4.8.3.1 EventNotification
The EventNotification service allows the transmission of an Event Notification.
This service is an unconfirmed service.
Table 57. EventNotification
+---------------------------------+-----+
! ! !
! Parameter Name !.req !
! !.ind !
+---------------------------------+-----+
! Argument ! M !
! Priority ! M !
! Access Specification ! M !
! Index ! S !
! Event Name ! S !
! Event Number ! M !
! Event Data ! O !
+---------------------------------+-----+
Argument
The argument contains the service specific parameters of the service request.
Priority
This parameter defines the priority for this service. It may have the values
true: high priority
false: low priority
Access Specification
This parameter states if the index or the name is used for addressing.
Index
This parameter defines to which Event Object the service is related.
Event Name
This parameter is the name of the Event Object.
Event Number
This parameter contains the counter value.
Event Data
This parameter contains the data. The data of the object shall be mapped onto
the parameter data according to the description of the Data Types in the coding
chapter. The Index is stored as Index Event Data in the Object Description of
the Event Object.
Page 287
PROFIBUS-Specification-Normative-Parts-5:1997
Copyright by PNO 1997 - all rights reserved
4.8.3.2 AcknowledgeEventNotification
This service allows the acknowledgement of an Event Notification.
Table 58. AcknowledgeEventNotification
+---------------------------------+-----+-----+
! ! ! !
! Parameter Name !.req !.res !
! !.ind !.con !
+---------------------------------+-----+-----+
! Argument ! M ! !
! Access Specification ! M ! !
! Index ! S ! !
! Event Name ! S ! !
! Event Number ! M ! !
! ! ! !
! Result(+) ! ! S !
! ! ! !
! Result(-) ! ! S !
! Error Type ! ! M !
+---------------------------------+-----+-----+
Argument
The argument contains the service specific parameters of the service request.
Access Specification
This parameter states if the index or the name is used for addressing.
Index
This parameter defines to which Event Object the service is related.
Event Name
This parameter is the name of the Event Object.
Event Number
This parameter contains the counter value.
Result(+)
The Result(+) parameter shall indicate that the service was completed success-
fully.
Result(-)
The Result(-) shall indicate that the service request was not completed success-
fully.
Error Type
This parameter contains information about the reason why the service was not
completed successfully.
Page 288
PROFIBUS-Specification-Normative-Parts-5:1997
Copyright by PNO 1997 - all rights reserved
4.8.3.3 AlterEventConditionMonitoring
This service allows the locking or unlocking of the Event Object.
Table 59. AlterEventConditionMonitoring
+---------------------------------+-----+-----+
! ! ! !
! Parameter Name !.req !.res !
! !.ind !.con !
+---------------------------------+-----+-----+
! Argument ! M ! !
! Access Specification ! M ! !
! Index ! S ! !
! Event Name ! S ! !
! Enabled ! M ! !
! ! ! !
! Result(+) ! ! S !
! ! ! !
! Result(-) ! ! S !
! Error Type ! ! M !
+---------------------------------+-----+-----+
Argument
The argument contains the service specific parameters of the service request.
Access Specification
This parameter states if the index or the name is used for addressing.
Index
This parameter defines to which Event Object the service is related.
Event Name
This parameter is the name of the Event Object.
Enabled
This parameter of type boolean defines to which value the Enabled attribute of
the Event Object shall be set.
Result(+)
The Result(+) parameter shall indicate that the service was completed success-
fully.
Result(-)
The Result(-) shall indicate that the service request was not completed success-
fully.
Error Type
This parameter contains information about the reason why the service was not
completed successfully.
Page 289
PROFIBUS-Specification-Normative-Parts-5:1997
Copyright by PNO 1997 - all rights reserved
4.8.3.4 EventNotificationWithType
This service allows the transmission of an Event Notification. The notification
contains data and the Data Type Description. This service is an unconfirmed
service.
Table 60. EventNotificationWithType
+---------------------------------+-----+
! ! !
! Parameter Name !.req !
! !.ind !
+---------------------------------+-----+
! Argument ! M !
! Priority ! M !
! Access Specification ! M !
! Index ! S !
! Event Name ! S !
! Event Number ! M !
! Type Description ! O !
! Event Data ! O !
+---------------------------------+-----+
Argument
The argument contains the service specific parameters of the service request.
Priority
This parameter defines the priority for this service. It may have the values
true: high priority
false: low priority
Access Specification
This parameter states if the index or the name is used for addressing.
Index
This parameter defines to which Event Object the service is related.
Event Name
This parameter is the name of the Event Object.
Event Number
This parameter contains the counter value.
Typedescription
This parameter contains the Data Type Description (see parameter type descrip-
tion below). It shall be present only if the event data parameter exists.
Event Data
This parameter contains the data. It shall be present only if the Type Descrip-
tion parameter exists. The data of the object shall be mapped onto the parameter
data according to the description of the Data Types in the coding chapter. The
Index is stored as Index Event Data in the Object Description of the Event Ob-
ject.
Page 290
PROFIBUS-Specification-Normative-Parts-5:1997
Copyright by PNO 1997 - all rights reserved
4.8.4 State Machine
4.8.4.1 State Machine Description
LOCKED
No Event Notifications are send in the LOCKED state (Enabled =false).
UNLOCKED
Event Notifications are sent normally in the UNLOCKED state (Enabled
=true).
+----------+ 1 +----------+
! LOCKED !---------->! UNLOCKED !
! !<----------! !
+----------+ 2 +----------+
! ^ 2 ! ^ 1
+--+ +--+
Figure 77. Event State Machine
4.8.4.2 State Transitions
-----------------------------------------------------------------
Event
\Exit Condition
=> Action
-----------------------------------------------------------------
1 AlterEventConditionMonitoring.ind
\Enabled = true
=> .res+
2 AlterEventConditionMonitoring.ind
\Enabled = false
=> .res+
-----------------------------------------------------------------