Спецификация протокола Profibus
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Download.res PDU: (without error)
43H, 01H, 38H, 00H
Download.res PDU: (with error code AD)
C3H
11.2 Boolean
Representation of the value true or false in an octet.
Notation: Boolean
Range of Value: true or false
Coding: false is represented by the value 00H
true is represented by the value FFH
Bit No !7 !6 !5 !4 !3 !2 !1 !0 !
---------+--+--+--+--+--+--+--+--+
Octet 1 !1 !1 !1 !1 !1 !1 !1 !1 !
+--+--+--+--+--+--+--+--+
Figure 18. Representation of the value true
Bit No !7 !6 !5 !4 !3 !2 !1 !0 !
---------+--+--+--+--+--+--+--+--+
Octet 1 !0 !0 !0 !0 !0 !0 !0 !0 !
+--+--+--+--+--+--+--+--+
Figure 19. Representation of the value false
11.3 Unsigned
Unsigned Values are unsigned quantities.
Notation: Unsigned8, Unsigned16, Unsigned32
Range of Value: Datatype ! Range of Value ! Length
-----------+-----------------------+-------
Unsigned8 ! 0 to 255 ! 1 Octet
Unsigned16 ! 0 to 65535 ! 2 Octet
Unsigned32 ! 0 to 4294967295 ! 4 Octet
Coding: Binary
Bit No !7 !6 !5 !4 !3 !2 !1 !0 !
---------+---+---+---+---+---+---+---+---+
Octet 1 !2
15
!2
14
!2
13
!2
12
!2
11
!2
10
!2
9
!2
8
!
+---+---+---+---+---+---+---+---+
Octet 2 !2
7
!2
6
!2
5
!2
4
!2
3
!2
2
!2
1
!2
0
!
+---+---+---+---+---+---+---+---+
Figure 20. Representation of the Datatype Unsigned16
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Bit No !7 !6 !5 !4 !3 !2 !1 !0 !
---------+---+---+---+---+---+---+---+---+
Octet 1 !2
31
!2
30
!2
29
!2
28
!2
27
!2
26
!2
25
!2
24
!
+---+---+---+---+---+---+---+---+
Octet 2 !2
23
!2
22
!2
21
!2
20
!2
19
!2
18
!2
17
!2
16
!
+---+---+---+---+---+---+---+---+
Octet 3 !2
15
!2
14
!2
13
!2
12
!2
11
!2
10
!2
9
!2
8
!
+---+---+---+---+---+---+---+---+
Octet 4 !2
7
!2
6
!2
5
!2
4
!2
3
!2
2
!2
1
!2
0
!
+---+---+---+---+---+---+---+---+
Figure 21. Representation of the Datatype Unsigned32
11.4 Octet-String
Notation: Octet-String
Coding: Binary
Bit No !7 !6 !5 !4 !3 !2 !1 !0 !
Octet ! ! ! ! ! ! ! ! !
---------+--+--+--+--+--+--+--+--+
1 ! !
+--+--+--+--+--+--+--+--+
. ! !
+--+--+--+--+--+--+--+--+
n ! !
+--+--+--+--+--+--+--+--+
Figure 22. Representation of the Datatype Octet-String
11.5 Visible-String
Notation: Visible-String
Range of Value: see DIN 66003 and ISO 2375
Coding: see DIN 66003
Bit No !7 !6 !5 !4 !3 !2 !1 !0 !
Octet ! ! ! ! ! ! ! ! !
---------+--+--+--+--+--+--+--+--+
1 ! first character !
+--+--+--+--+--+--+--+--+
2 ! second character !
+--+--+--+--+--+--+--+--+
. ! etc. !
+--+--+--+--+--+--+--+--+
. ! !
+--+--+--+--+--+--+--+--+
n ! !
+--+--+--+--+--+--+--+--+
Figure 23. Coding of Data of the Data Type Visible-String
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11.6 Coding of Set_Slave_Add and Global_Control
Table 44. Coding of the functions Set_Slave_Add and Global_Control
+--------------------+--------------------------------------------+
! Function ! Parameter !
+--------------------+--------------------------------------------+
! Set_Slave_Add.req ! New_Slave_Add,Ident_Number,No_Add_Chg, !
! ! Rem_Slave_Data !
+--------------------+--------------------------------------------+
! Global_Control.req ! Control_Command,Group_Select !
+--------------------+--------------------------------------------+
11.7 Structure of the Data_Unit at Data_Exchange
The structure of the Data_Unit for the function Data_Exchange is defined by the
configuration identifiers which are passed to the DP-Slave at configuration.
The following Example shows how the data in the Data_Unit will be transferred,
corresponding to the given configuration identifiers.
Configuration identifiers (C-ID):
+------+------+------+------+------+------+------+-//-----+
!1.C-ID!2.C-ID!3.C-ID!4.C-ID!5.C-ID!6.C-ID!7.C-ID! !
+------+------+------+------+------+------+------+-//-----+
!1 B_I !1 W_I !2 W_O !2 B_IO!1 B_O !2 W_I !3 W_A ! !
+------+------+------+------+------+------+------+-//-----+
1 B_I: 1 Byte input; 1 W_I: 1 Word input
1 B_O: 1 Byte output; 1 W_O: 1 Word output
2 B_IO: 2 Byte out- and input
etc.
The sequence of data in the Data_Unit is shown in figure 24.
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Data_Exchange.req Data_Exchange.res
LSB LSB
Bit ! 8! 7! 6! 5! 4! 3! 2! 1! Bit ! 8! 7! 6! 5! 4! 3! 2! 1!
------+-----------------------+ ------+-----------------------+
Byte 1! Word_high (3.C-ID) ! Byte 1! Data (1.C-ID) !
+-----------------------+ +=======================+
2! Word_low (3.C-ID) ! 2! Word_high (2.C-ID) !
+=======================+ +-----------------------+
3! Data (4.C-ID) ! 3! Word_low (2.C-ID) !
+-----------------------+ +=======================+
4! Data (4.C-ID) ! 4! Data (4.C-ID) !
+=======================+ +-----------------------+
5! Data (5.C-ID) ! 5! Data (4.C-ID) !
+=======================+ +=======================+
6! 1.Word_high (7.C-ID) ! 6! 1.Word_high(6.C-ID) !
+-----------------------+ +-----------------------+
7! 1.Word_low (7.C-ID) ! 7! 1.Word_low (6.C-ID) !
+-----------------------+ +-----------------------+
8! 2.Word_high (7.C-ID) ! 8! 2.Word_high(6.C-ID) !
+-----------------------+ +-----------------------+
9! 2.Word_low (7.C-ID) ! 9! 2.Word_low (6.C-ID) !
+-----------------------+ +=======================+
10! 3.Word_high (7.C-ID) ! 10! etc. !
+-----------------------+ +-----------------------+
11! 3.Word_low (7.C-ID) ! 11! !
+=======================+ +-----------------------+
12! etc. ! 12! !
+-----------------------+ +-----------------------+
.! ! .! !
+-----------------------+ +-----------------------+
n! ! n! !
+-----------------------+ +-----------------------+
Figure 24. Structure of the Data_Unit for the Request- and
Response-Frame
For the configuration identifier "free place" no data will be transferred in the
Data_Unit.
11.8 Master-Parameter Set
The master parameter set contains the bus parameter set and DP-Slave parameter
sets and is built as in section "Coding of the Bus Parameter Set" and "Coding of
Parameter Set of DP-Slave" described.
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11.8.1 Coding of the Bus Parameter Set
The structure of the bus parameter set is described in figure 25.
Name Type
+------------------------+--------------------+
! Bus_Para_Len ! Unsigned16 !
+------------------------+--------------------+
! FDL_Add ! Unsigned8 !
+------------------------+--------------------+
! Baud_rate ! Unsigned8 !
+------------------------+--------------------+
! T
SL
! Unsigned16 !
+------------------------+--------------------+
! min T
SDR
! Unsigned16 !
+------------------------+--------------------+
! max T
SDR
! Unsigned16 !
+------------------------+--------------------+
! T
QUI
! Unsigned8 !
+------------------------+--------------------+
! T
SET
! Unsigned8 !
+------------------------+--------------------+
! T
TR
! Unsigned32 !
+------------------------+--------------------+
! G ! Unsigned8 !
+------------------------+--------------------+
! HSA ! Unsigned8 !
+------------------------+--------------------+
! max_retry_limit ! Unsigned8 !
+------------------------+--------------------+
! Bp_Flag ! Unsigned8 !
+------------------------+--------------------+
! Min_Slave_Interval ! Unsigned16 !
+------------------------+--------------------+
! Poll_Timeout ! Unsigned16 !
+------------------------+--------------------+
! Data_Control_Time ! Unsigned16 !
+------------------------+--------------------+
! Octet 1 (reserved) ! Octet-String !
+------------------------+ !
! ... ! !
+------------------------+ !
! Octet 6 (reserved) ! !
+------------------------+--------------------+
! Master_User_Data_Len ! Unsigned16 !
+------------------------+--------------------+
! Master_Class2_Name ! Visible-String(32)!
+------------------------+--------------------+
! Master_User_Data ! Octet-String !
+------------------------+--------------------+
Figure 25. Structure of the bus parameter set
Bus_Para_Len:
This parameter contains the length of Bus_Para inclusive the lengthparameter.
Range: 34 to 2
16
-1
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FDL_Add:
This parameter contains the own address of the DP-Master.
Range: 0 to 125
Baud_rate:
This parameter contains the code number for the baud rate.
Range:
7 to 255 => reserved for further baud rates
6 => 1500 kbit/s
4 => 500 kbit/s
3 => 187,5kbit/s
2 => 93,75kbit/s
1 => 19,2kbit/s
0 => 9,6kbit/s
T
SL
, min T
SDR
, max T
SDR
, T
QUI
, T
SET
, T
TR
, G, HSA, max_retry_limit:
These parameters are described in the Data Link Layer Service Protocol
Specifications.
Bp_Flag:
This parameter contains flags for the User-Interface
MSB LSB
+--+--+--+--+--+--+--+--+
Bit No !7 !6 !5 !4 !3 !2 !1 !0 !
+--+--+--+--+--+--+--+--+
! ! ! ! ! ! ! ! Meaning:
! ! ! ! ! ! ! !
! +--+--+--+--+--+--+---- reserved
!
!
+--- Error_Action_Flag
0 no change of the operation mode in case of an error
1 change of the operation mode in case of an error
Min_Slave_Interval:
Meaning: see section "Data Interface"
Range: 1 to 2
16
-1
Timebase: 100
µ
s
Poll_Timeout:
Meaning: see section "Data Interface"
Range: 1 to 2
16
-1
Timebase: 1ms
Data_Control_Time:
Meaning: see section "Data Interface"
Range: 1 to 2
16
-1
Timebase: 10ms
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Master_User_Data_Len:
This parameter contains the length of Master_User_Data inclusive the
lengthparameter.
Range: 2 to (2
16
-33)
Master_Class2_Name:
This parameter indicates the name of the DP-Master (class 2) the master
parameter set where created with. The length of this name shall not exceed 32
characters.
Master_User_Data:
This field contains specific data from the manufacturer which are necessary for
the bus parameter set.
11.8.2 Coding of Parameter Set of DP-Slave
The structure of the DP-Slave parameter sets is described in figure 26. The FDL
address of the corresponding DP-Slave is the Area_Code with which the DP-Slave
parameter set is loaded.
Name Type
+------------------------+-------------------+
! Slave_Para_Len ! Unsigned16 !
+------------------------+-------------------+
! Sl_Flag ! Unsigned8 !
+------------------------+-------------------+
! Slave_Type ! Unsigned8 !
+------------------------+-------------------+
! Octet 1 (reserved) ! Octet-String !
+------------------------+ !
! ... ! !
+------------------------+ !
! Octet 12 (reserved) ! !
+------------------------+-------------------+
! Prm_Data_Len ! Unsigned16 !
+------------------------+-------------------+
! Prm_Data ! Octet-String !
+------------------------+-------------------+
! Cfg_Data_Len ! Unsigned16 !
+------------------------+-------------------+
! Cfg_Data ! Octet-String !
+------------------------+-------------------+
! Add_Tab_Len ! Unsigned16 !
+------------------------+-------------------+
! Add_Tab ! Octet-String !
+------------------------+-------------------+
! Slave_User_Data_Len ! Unsigned16 !
+------------------------+-------------------+
! Slave_User_Data ! Octet-String !
+------------------------+-------------------+
Figure 26. Structure of the DP-Slave parameter set
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Slave_Para_Len:
This parameter contains the length of Slave_Para inclusive the lengthparameter.
A DP-Slave parameter set can be deleted by setting the Slave_Para_Len to zero.
Range: 0 to 2
16
-1
Sl_Flag:
This parameter contains slave specific flags.
MSB LSB
+--+--+--+--+--+--+--+--+
Bit No !7 !6 !5 !4 !3 !2 !1 !0 !
+--+--+--+--+--+--+--+--+
! ! ! ! ! ! ! ! Meaning:
! ! ! ! ! ! ! !
! ! +--+--+--+--+--+---- reserved
! !
! !
! +---------------------- New_Prm
! 0 DP-Slave becomes user data
! 1 DP-Slave becomes new parameter data
!
+------------------------- Active
0 DP-Slave will not be activated
1 DP-Slave will be activated
Slave_Type:
This parameter contains a manufacturer specific type denotation for the DP-
Slave.
Range: 0 to 2
8
-1
0 DP-Slave
1 to 15 reserved
16 to 255 manufacturer specific
Prm_Data_Len:
This parameter contains the length of Prm_Data inclusive the lengthparameter.
Range: 9 to 246
Prm_Data:
This parameter is described in section "Send Parameter Data".
Cfg_Data_Len:
This parameter contains the length of Cfg_Data inclusive the lengthparameter.
Range: 3 to 246
Cfg_Data:
This parameter is described in section "Check Configuration Data".
Add_Tab_Len:
This parameter contains the length of Add_Tab inclusive the lengthparameter.
Range: 2 to 2
16
-31
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Add_Tab:
This parameter contains the address-assignment-table of the DP-Slave. In the
case of a PLC the list Add_Tab contains the PLC addresses of the decentralized
addresses.
Slave_User_Data_Len:
This parameter contains the length of Slave_User_Data inclusive the
lengthparameter.
Range: 2 to 2
16
-31
Slave_User_Data:
This field contains manufacturer specific data that characterize the DP-Slave
for the DP-Master.
11.9 Coding of Statistic Counters
The statistic counters are described in figure 27.
+------------------------+-------------------+
! Frame_sent_count_0 ! Unsigned32 !
+------------------------+-------------------+
! Error_count_0 ! Unsigned16 !
+------------------------+-------------------+
! Frame_sent_count_1 ! Unsigned32 !
+------------------------+-------------------+
! Error_count_1 ! Unsigned16 !
+------------------------+-------------------+
! . . . ! !
+------------------------+-------------------+
! Frame_sent_count_126 ! Unsigned32 !
+------------------------+-------------------+
! Error_count_126 ! Unsigned16 !
+------------------------+-------------------+
! SD_count ! Unsigned32 !
+------------------------+-------------------+
! SD_error_count ! Unsigned16 !
+------------------------+-------------------+
Figure 27. Coding of statistic counters
The index of the counters corresponds to the station address of the
participants.
The statistic counters can be rest by means of the function DDLM_Download. For
this the Area_Code 129 (and the corresponding Add_Offset) with data equal to
zero has to be addressed. To read the statistic counters the function
DDLM_Upload has to be used.
For Add_Offset and Data_Len the following rules are valid:
Add_Offset = n⋅6; n = 0 to 127
Data_Len = n⋅6; n = 1 to 39
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12 Direct-Data-Link-Mapper (DDLM)
12.1 General
As already mentioned in the description of the protocol architecture, the
Direct-Data-Link-Mapper (DDLM) makes the connection between the User-Interface
and layer 2. All functions which are passed at the interface of the User-
Interface are mapped by the DDLM to the FDL and FMA1/2 services of layer 2. The
DDLM delivers the necessary layer 2 parameters of the function call (SSAP, DSAP,
Serv_class, ...) for layer 2, receives the confirmations and indications from
layer 2 and delivers them to the User-Interface.
12.2 Interface between DDLM and Layer 2
+-------------------------------------+
! !
! User-Interface/User !
+-------------------------------------+
! Direct-Data-Link-Mapper !
! (DDLM) !
! !
------------------ +=====================================+
! !
layer ! empty !
3,4,5,6,7 ! !
------------------ +--------------------------+----------+
! ! !
layer 1/2 ! FDL/PHY ! FMA 1/2 !
! ! !
------------------ +--------------------------+----------+
Figure 28. Interface between DDLM and layer 2
The DDLM is directly put upon the FDL user - FDL interface and on the FMA1/2
user - FMA1/2 interface as described in the Data Link Layer Service Definitions.
The DDLM uses for the mapping of the DDLM functions on the layer 2 the following
services.
a) FDL services:
- Send and Request Data with Reply (SRD)
- Send Data with No Acknowledge (SDN)