Спецификация протокола Profibus
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Error Type
This parameter contains information on the reason the service failed.
4.5.3 PHY/FDL Variables
The PHY/FDL variables are operational parameters of the Layers 1/2 and counters
of Layer 2. The meaning and the range of values of the variables and the count-
ers shall be found in part 2.
4.5.3.1 Model Description
Services are provided to the FMA7 user to read or to write the PHY/FDL variables
locally or remotely.
4.5.3.2 Attributes
Object: PHY/FDL Variable
Key Attribute: Variable Identifier
Attribute: Value
Variable Identifier
Identifier for the variable. The variable identifier specifies implicitly to
which instance the variable is assigned.
Value
Value of the variable.
4.5.3.3 Services for PHY/FDL Variables
SetValueLoc
Local variables in FDL or PHY are set with the SetValueLoc service.
Table 14. SetValueLoc
+---------------------------------+-----+-----+
! Parameter Name !.req ! !
! ! !.con !
+---------------------------------+-----+-----+
! Argument ! M ! !
! Variable Identifier ! M ! !
! Desired Value ! M ! !
! ! ! !
! Result(+) ! ! S !
! ! ! !
! Result(-) ! ! S !
! Error Type ! ! M !
+---------------------------------+-----+-----+
Argument
The argument contains the parameters of the SetValueLoc.req primitive.
Variable Identifier
This parameter specifies the variable which to receive a new value. Valid val-
ues:
FDL operational parameters
( 1) - TS
( 2) - Baud_rate
( 3) - Medium_red
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( 4) - HW-Release
( 5) - SW-Release
( 6) - TSL
( 7) - MIN_TSDR
( 8) - MAX_TSDR
( 9) - TQUI
(10) - TSET
(11) - TTR
(12) - G
(13) - In_ring_desired
(14) - HSA
(15) - max_retry_limit
counters
(20) - Frame_sent_count
(21) - Retry_count
(22) - SD_count
(23) - SD_error_count
PHY variables
(30) - Transmitter_output
(31) - Received_signal_source
(32) - Loop
Desired Value
This parameter contains the value of the selected variable. The valid range of
values is defined in the subclauses 5.4.3.4 and 5.4.3.5.
Result(+)
The Result(+) parameter indicates that the service was executed successfully.
Result(-)
The Result(-) parameter indicates that the service failed.
Error Type
This parameter contains information on the reason the service failed.
4.5.3.3.1 ReadValueLoc
Local variables are read out of FDL or PHY with the ReadValueLoc service.
Table 15. ReadValueLoc
+---------------------------------+-----+-----+
! ! ! !
! Parameter Name !.req ! !
! ! !.con !
+---------------------------------+-----+-----+
! Argument ! M ! !
! Variable Identifier ! M ! !
! ! ! !
! Result(+) ! ! S !
! Current Value ! ! M !
! ! ! !
! Result(-) ! ! S !
! Error Type ! ! M !
+---------------------------------+-----+-----+
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Argument
The argument contains the parameters of the ReadValueLoc.req primitive.
Variable Identifier
This parameter specifies the variable whose value is to be read.
Valid values
FDL operational parameters:
( 1) - TS
( 2) - Baud_rate
( 3) - Medium_red
( 4) - HW-Release
( 5) - SW-Release
( 6) - TSL
( 7) - MIN_TSDR
( 8) - MAX_TSDR
( 9) - TQUI
(10) - TSET
(11) - TTR
(12) - G
(13) - In_ring_desired
(14) - HSA
(15) - max_retry_limit
(16) - TRR
(17) - LAS
(18) - GAPL
counters
(20) - Frame_sent_count
(21) - Retry_count
(22) - SD_count
(23) - SD_error_count
PHY variables
(30) - Transmitter_output
(31) - Received_signal_source
(32) - Loop
Result(+)
The Result(+) parameter indicates that the service was executed successfully.
Current Value
This parameter contains the value of the selected variable. The valid range of
values is defined in PHY/FDL Variables specification.
Result(-)
The Result(-) parameter indicates that the service failed.
Error Type
This parameter contains information on the reason the service failed.
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4.5.3.3.2 SetValueRem
Variables are set in the FDL of the remote station with the SetValueRem service.
Only the variables which are not critical for the stability of the token ring
may be manipulated.
Table 16. SetValueRem
+---------------------------------+-----+-----+
! ! ! !
! Parameter Name !.req !.res !
! !.ind !.con !
+---------------------------------+-----+-----+
! Argument ! M ! !
! Communication Reference ! M ! !
! Variable Identifier ! M ! !
! Desired Value ! M ! !
! ! ! !
! Result(+) ! ! S !
! Communication Reference ! ! M !
! ! ! !
! Result(-) ! ! S !
! Communication Reference ! ! M !
! Error Type ! ! M !
+---------------------------------+-----+-----+
Argument
The argument contains the parameters of the SetValueRem.req primitive and the
SetValueRem.ind primitive.
Communication Reference
This parameter specifies the identifier of the associated management connection
in the CRL.
Variable Identifier
This parameter specifies the variable which is to receive a new value.
Valid values
FDL operational parameters
( 3) - Medium_red
( 6) - TSL
( 7) - MIN_TSDR
( 8) - MAX_TSDR
( 9) - TQUI
(10) - TSET
(11) - TTR
(12) - G
(13) - In_ring_desired
(14) - HSA
(15) - max_retry_limit
counters
(20) - Frame_sent_count
(21) - Retry_count
(22) - SD_count
(23) - SD_error_count
Desired Value
This parameter contains the value of the selected variable. The valid range of
values is defined in the subclause 5.4.3.4.
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Result(+)
The Result(+) parameter indicates that the service was executed successfully.
Result(-)
The Result(-) parameter indicates that the service failed.
Error Type
This parameter contains information on the reason the service failed.
4.5.3.3.3 ReadValueRem
Variables are read out of FDL or PHY of the remote station with the ReadValueRem
service.
Table 17. ReadValueRem
+---------------------------------+-----+-----+
! ! ! !
! Parameter Name !.req !.res !
! !.ind !.con !
+---------------------------------+-----+-----+
! Argument ! M ! !
! Communication Reference ! M ! !
! Variable Identifier ! M ! !
! ! ! !
! Result(+) ! ! S !
! Communication Reference ! ! M !
! Current Value ! ! M !
! ! ! !
! Result(-) ! ! S !
! Communication Reference ! ! M !
! Error Type ! ! M !
+---------------------------------+-----+-----+
Argument
The argument contains the parameters of the ReadValueRem.req primitive and of
the ReadValueRem.ind primitive.
Communication Reference
This parameter specifies the identifier of the associated management connection
in the CRL.
Variable Identifier
This parameter specifies the variable whose value is to be read.
Valid values
FDL operational parameters:
( 1) - TS
( 2) - Baud_rate
( 3) - Medium_red
( 4) - HW-Release
( 5) - SW-Release
( 6) - TSL
( 7) - MIN_TSDR
( 8) - MAX_TSDR
( 9) - TQUI
(10) - TSET
(11) - TTR
(12) - G
(13) - In_ring_desired
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(14) - HSA
(15) - max_retry_limit
(16) - TRR
(17) - LAS
(18) - GAPL
counters
(20) - Frame_sent_count
(21) - Retry_count
(22) - SD_count
(23) - SD_error_count
PHY variables
(30) - Transmitter_output
(31) - Received_signal_source
(32) - Loop
Result(+)
The Result(+) parameter indicates that the service was executed successfully.
Current Value
This parameter contains the value of the selected variable. The valid range of
values is defined in the subclauses PHY/FDL Variables specification.
Result(-)
The Result(-) parameter indicates that the service failed.
Error Type
This parameter contains information on the reason the service failed.
4.5.3.4 Range of Values of FDL Variables
The range of values of the FDL variables and counters is specified in the Data
Link Layer of the PROFIBUS Specification.
This subclause contains additional definitions for all variables for which an
exact encoding is not specified by the definition of the data type in FMA7 and
the definitions in the Data Link Layer of the PROFIBUS Specification.
Baud_rate
(0) - 9,6 kbit/s
(1) - 19,2 kbit/s
(2) - 93,75 kbit/s
(3) - 187,5 kbit/s
(4) - 500 kbit/s
(5) - 38,4 kbit/s
(6) - 1500 kbit/s
Medium_red
(0) - no_redundancy
(1) - bus_A_highprior
(2) - bus_B_highprior
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LAS
Unsigned8 - Length of LAS (m-n+1)
Unsigned8 - FDL Address Active Station n
Unsigned8 - FDL Address Actice Station n+1
...
Unsigned8 - FDL Address Active Station n+m
The length of LAS is defined as the number of octets following the length field.
GAPL
Unsigned8 - Length of GAPL (m-n+2)
Unsigned8 - Start FDL Address
Unsigned8 - HSA
Unsigned8 - FDL_Status n
Unsigned8 - FDL Status n+1
...
Unsigned8 - FDL Status n+m
FDL Status
(0) - passive station at this address
(1) - active station not ready at this address
(2) - station ready for token ring
(3) - active station in token ring
(4) - no station available at this address
The length of GAPL is defined as the number of octets following the length
field.
If there is no GAP then the Start FDL Address is irrelevant and the HSA field
shall contain the current HSA value. The information „no GAP“ shall be indicated
by the value of 2 of length field.
In_ring_desired:
TRUE - the station may be taken into the logical token ring
FALSE - the station may not be taken into the logical token ring
4.5.3.5 Range of Values of PHY Variables
Transmitter_output
TRUE - enabled
FALSE - disabled
Received_signal_source
(0) - primary
(1) - alternate
(2) - random
Loop
TRUE - enabled
FALSE - disabled
4.5.4 Identification
The FMA7 identification services allow the FMA7 user to request the manufac-
turer, the software and hardware releases and the characteristics of a PROFIBUS
controller. In contrast to the FMS identification service, the communication
components are identified here.
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4.5.4.1 Model Description
Services for reading the identification reports (Ident List) of individual in-
stances (FMS, LLI, FDL, FMA7) and for reading the identification report (Station
Ident List) of the complete PROFIBUS communication system are provided to the
user. FMS, LLI, FDL and FMA7 each have an object Ident List. FMA7 has in addi-
tion an object Ident List which describes the specific realization of the com-
plete PROFIBUS communication system. The lengths of an Ident List and of the
Station Ident list may not exceed 200 octets.
4.5.4.2 The Ident List Object
The object is defined in FMA7, FMS, LLI and FDL.
Attributes
Object: Ident List
Key Attribute: implicit by Instance Identifier
Attribute: Vendor Name
Attribute: Controller Type
Attribute: Hardware Release
Attribute: Software Release
Instance Identifier
This attribute specifies from which instance the Ident List is requested.
Valid values
- FMA7
- FMS
- LLI
- FDL
Vendor Name
This attribute specifies the vendor of the software of the associated instance.
Controller Type
This attribute specifies the hardware (e.g. processor, controller, ASIC), on
which this instance is implemented.
Hardware Release
This attribute specifies the hardware release of the associated instance.
Software Release
This attribute specifies the software release of the associated instance.
4.5.4.3 Station Ident List Object
This object contains the identification report and the communication specific
features of the PROFIBUS communication system in the given realization.
Attributes
Object: Station Ident List
Key Attribute: implicit by Instance Identifier
Attribute: Vendor Name
Attribute: Controller Type
Attribute: Hardware Release
Attribute: Software Release
Attribute: Characteristics
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Instance Identifier
This attribute specifies from which instance the Ident List is requested.
Valid values
- Station
Vendor Name
This attribute specifies the vendor of the PROFIBUS communication system.
Controller Type
This attribute specifies the hardware of the PROFIBUS communication system (e.g.
controller, board).
Hardware Release
This attribute specifies the hardware release of the PROFIBUS communication sys-
tem.
Software Release
This attribute specifies the software release of the PROFIBUS communication sys-
tem.
Characteristics
This attribute specifies the features of the specific realization of the
PROFIBUS communication system.
+---------+--------------+--------------------------------------+
! Byte ! Data Type ! Meaning !
+---------+--------------+--------------------------------------+
! 1-3 ! Bit String ! Functions Supported !
! 4-9 ! Bit String ! FMS Features Supported !
! ! ! (see table 13) !
! 10-15 ! Bit String ! FMA7 Services Supported !
! ! ! (see table 112) !
! 16 ! Unsigned8 ! Highest allowed SAP Value ( < 63 ) !
! 17 ! Unsigned8 ! Maximum number of SAPs !
! 18-19 ! Unsigned16 ! Highest allowed CREF !
! 20-21 ! Unsigned16 ! Maximum number of CRL entries !
! 22-25 ! Unsigned32 ! Total length of all PDU Buffers !
! 26-27 ! Unsigned16 ! Total number of parallel services !
! 28 ! Unsigned8 ! Maximum PDU length !
! 29-30 ! Unsigned16 ! Largest Index in the OD !
! 31-32 ! Unsigned16 ! Maximum number of OD Entries !
! 33 ! Unsigned8 ! Maximum number of VFDs !
! 34 ! Unsigned8 ! Maximum Entries in the LAS !
! 35 ! Unsigned8 ! MIN-TSDR-ABS **1) !
! 36-37 ! Octet String ! Profile Number !
! 38 ! Unsigned8 ! TRDY-ABS **1) !
! 39 ! Unsigned8 ! TSDI-ABS **1) !
! 40 ! Unsigned8 ! MAX-TSDR-ABS **1) !
! 41-44 ! Bit String ! data types supported !
! 45-47 ! Bit String ! access rights supported !
! 48 ! Bit String ! variable types supported !
! 49-50 ! Bit String ! special functions !
! 51 ! Unsigned8 ! max symbol length OD !
! 52 ! Unsigned8 ! max symbol length CRL !
! 53 ! Unsigned8 ! Tset-ABS **1) !
! 54 ! Unsigned8 ! Tout-ABS **1) !
+---------+--------------+--------------------------------------+
**1): absolute value, base is 20 micro seconds
Figure 21. Structure of the Characteristics Attribute
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Functions Supported is a bit string of length 24 bits. One bit is used for each
of the supported functions.
+---------+-----------------------------------------------------+
! Bit ! Functions supported !
+---------+-----------------------------------------------------+
! 0 ! Master Function in Master/Master CREL !
! 1 ! Master Function in Master/Slave CREL !
! 2 ! Slave Function in Master/Slave CREL !
! 3 ! Connections for Cyclic Data Transfer !
! 4 ! Connectionless CREL !
! 5 ! Unconfirmed Services with high priority !
! 6 ! Named Addressing for Domain !
! 7 ! Named Addressing for Program Invocation !
! 8 ! Named Addressing for Simple Variable, Array, Record !
! 9 ! Named Addressing for Variable List !
! 10 ! Named Addressing for Event !
! 11 ! Permanent OD, CRL, Layer 2 parameters !
! 12 ! 9,6 kbit/s permissible !
! 13 ! 19,2 kbit/s permissible !
! 14 ! 93,75 kbit/s permissible !
! 15 ! 187,5 kbit/s permissible !
! 16 ! 500 kbit/s permissible !
! 17 ! 38,4 kbit/s permissible !
! 18 ! 1500 kbit/s permissible !
! 19-23 ! reserved !
+---------+-----------------------------------------------------+
Figure 22. Structure of the Bit String Functions Supported
Data Types Supported is a bit string of length 32 bits. One bit is used for each
of the Data Types Supported. Reserved bits shall all be „0“.
+---------+---------------------------+
! Bit ! Data Types Supported !
+---------+---------------------------+
! 0 ! Boolean !
! 1 ! Integer8 !
! 2 ! Integer16 !
! 3 ! Integer32 !
! 4 ! Unsigned8 !
! 5 ! Unsigned16 !
! 6 ! Unsigned32 !
! 7 ! Floating Point !
! 8 ! Visible String !
! 9 ! Octet String !
! 10 ! Date !
! 11 ! Time of Day !
! 12 ! Time Difference !
! 13 ! Bit String !
! 14-31 ! reserved !
+---------+---------------------------+
Figure 23. Structure of the Bit String Data Types Supported