Спецификация протокола Profibus

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Tset_1.5M: (G)

This parameter specifies the setup time relating to layer 2. This time specifies

the interval between the arrival of an event and the corresponding reaction (see

Part 4) at the baud rate 1.5 MBaud.

Type: Unsigned8

Time base: bit time

LAS_Len: (M)

This parameter specifies how many entries the device permits into the list of

active stations (LAS).

Type: Unsigned8

Tsdi_9.6: (G)

This value specifies the station delay time (Tsdi) of the initiator (see Part 4)

at the baud rate 9.6 kBaud.

Type: Unsigned16

Time base: bit time

Tsdi_19.2: (G)

This value specifies the station delay time (Tsdi) of the initiator (see Part 4)

at the baud rate 19.2 kBaud.

Type: Unsigned16

Time base: bit time

Tsdi_93.75: (G)

This value specifies the station delay time (Tsdi) of the initiator (see Part 4)

at the baud rate 93.75 kBaud.

Type: Unsigned16

Time base: bit time

Tsdi_187.5: (G)

This value specifies the station delay time (Tsdi) of the initiator (see Part 4)

at the baud rate 187.5 kBaud.

Type: Unsigned16

Time base: bit time

Tsdi_500: (G)

This value specifies the station delay time (Tsdi) of the initiator (see Part 4)

at the baud rate 500 kBaud.

Type: Unsigned16

Time base: bit time

Tsdi_1.5M: (G)

This value specifies the station delay time (Tsdi) of the initiator (see Part 4)

at the baud rate 1.5 MBaud.

Type: Unsigned16

Time base: bit time

Max_Slaves_supp: (M)

This parameter specifies how many DP-Slaves a DP-Master (class 1) can handle.

Type: Unsigned8

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14.3.4 DP-Slave related Key Words

Freeze_Mode_supp: (D)

The DP-device supports the Freeze-Mode. DP-Slaves which support the freeze mode

has to ensure that already in the next data exchange cycle after the Freeze

control command the last frozen values of the inputs have to be transferred.

Type: Boolean (1: True)

Sync_Mode_supp: (D)

The DP-device supports the Sync-Mode.

Type: Boolean (1: True)

Auto_Baud_supp: (D)

The DP-device supports automatic baud rate detection.

Type: Boolean (1: True)

Set_Slave_Add_supp: (D)

The DP-device supports the function Set_Slave_Add.

Type: Boolean (1: True)

User_Prm_Data_Len: (D)

This parameter specifies the maximal length of User_Prm_Data.

Type: Unsigned8

User_Prm_Data: (O)

Type: Octet-String

The meaning of this parameter is vendor dependent. It specifies the default

value for the User_Prm_Data field (see section "Send Parameter Data").

Min_Slave_Intervall: (M)

This parameter specifies the time between two slave poll cycles for a DP-device

which has at least to expire .

Type: Unsigned16

Time base: 100

Modular_Station: (D)

This parameter specifies if the related DP-device is a modular device.

Type: Boolean (0: compact device, 1: modular device)

Max_Module: (M if Modular_Station)

This parameter specifies the maximum number of modules of a modular station.

Type: Unsigned8

Max_Input_Len: (M if Modular_Station)

This parameter specifies the maximum length of the input data (in bytes) of a

modular station.

Type: Unsigned8

Max_Output_Len: (M if Modular_Station)

This parameter specifies the maximum length of the output data (in bytes) of a

modular station.

Type: Unsigned8

Max_Data_Len: (M if Modular_Station)

This parameter specifies the maximum length of the input- and output data (the

sum in bytes) of a modular station. If this parameter is omitted the maximum

length is the sum of the input- and output data.

Type: Unsigned16

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Unit_Diag_Bit: (O)

In order to display vendor dependent status- or error messages it is possible to

assign a text (Diag_Text) to each bit of the device related diagnostic field

(see section "Examples for DDB-File Entries").

Used parameters:

Bit:

Type: Unsigned16

Meaning: Bit position in the device related diagnostic field.

(LSB in the first Byte is bit 0).

Diag_Text:

Type: Visible-String(32)

Unit_Diag_Area: (O)

Between the key words Unit_Diag_Area and Unit_Diag_Area_End the assignment of

values of the device related diagnostic field to text strings (Diag_Text) is

specified in a bit field (see section "Examples for DDB-File Entries").

Used parameters:

First_Bit:

Type: Unsigned16

Meaning: First bit position of the bit field.

(LSB of the first byte is bit 0)

Last_Bit:

Type: Unsigned16

Meaning: Last bit position of the bit field. The bit field may be

maximum 16 bit wide.

Value:

Type: Unsigned16

Meaning: Value in the bit field.

Diag_Text:

Type: Visible-String

Module: (M)

Between the key words Module and Endmodule it shall be specified either the

identifier resp. identifiers of a DP-compact device, or the identifier resp.

identifiers of all possible modules of a modular DP-Slave. Furthermore it is

possible to specify vendor dependent error types in the channel related

diagnostic field. If the key word Channel_Diag is used outside of the key words

Module and Endmodule, it is specified that for all following modules the same

vendor dependent error type in the channel related diagnostic field will be used

(see section "Examples for DDB-File Entries").

Used parameters:

Mod_Name:

Type: Visible-String (32)

Meaning: Module name of an individual module, which is used in a

modular station, or device name of a compact DP-Slave.

Config:

Type: Octet-String (17)

Meaning: This parameter specifies the identifier resp. identifiers

of the module of a modular DP-Slave, or of a compact

DP-device. The format of the identifier resp. identifiers

is described in section "Check Configuration Data".

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Channel_Diag: (O)

With the key word Channel_Diag the assignment of the vendor specific Error_Types

to text-strings (Diag_Text) in the channel related diagnostic field shall be

specified (see section "Examples for DDB-File Entries").

Used parameters:

Error_Type:

Type: Unsigned8 (16 <= Error_Type <= 31)

Diag_Text:

Type: Visible-String(32)

14.3.5 Formal Description of the DDB-File Format

The statements in square brackets are optional in the following description. The

symbol "|" specifies the logical or-operation.

<CRLF> = <Carriage Return><Line Feed> |

<Num> = 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9

<Namechar> = a | b | c | d | e | f | g | h | i | j | k | l

| m | n | o | p | q | r | s | t | u | v | w | x

| y | z | _ | . | - | A | B | C | D | E | F | G

| H | I | J | K | L | M | N | O | P | Q | R | S

| T | U | V | W | X | Y | Z | <Num>

<Otherchar> = + | * | / | < | > | ( | ) | [ | ] | { | } | !

| $ | % | & | ? | ´ | ^ | | | = | # | ; | , | :

| `

<Backslash> = \

<Char> = <Stringchar> | "

<LineEnd> = <CRLF> | <Com><CRLF> | <WS><LineEnd> |

<Boolean> = 0 | 1

<Hexchar> = <Num> | A | B | C | D | E | F | a | b | c | d

| e | f

<Octet> = <Number> { 0 <= <Octet> <= 255 }

<Unsigned16> = <Number> { 0 <= <Unsigned16> <= 65535 }

<Unsigned32> = <Number> { 0 <= <Unsigned32> <= 4294967295 }

<Octet-String> = <Octet> | <Octet-String>,<Octet>

| <String><Stringchar> | <String><Space>

<Visible-String> = "<String>"

<Unit> = Bit | us

<Any-String> = <Char> | <WS> | <Any-String><Char>

| <Any-String><WS>

<Any-Line> = <Any-String><CRLF>

<Long-Line> = <Any-String><Backslash><CRLF> | <Any-Line>

| <Long-Line>

<Any-Text> = <Any-Line> | <Any-Text><Any-Line>

<User-Definition> = <Key word>[<Otherchar><Any-Line>]<LineEnd>

<Vendor_Name> = <Visible-String> { Length <= 32 }

<Model_Name> = <Visible-String> { Length <= 32 }

<Revision> = <Visible-String> { Length <= 32 }

<Ident_Number> = <Unsigned16>

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<Protocol_Ident> = <Unsigned8>

<Station_Type> = <Unsigned8>

<FMS_supp> = <Boolean>

<Hardware_Release> = <Visible-String> { Length <= 32 }

<Software_Release> = <Visible-String> { Length <= 32 }

<9.6_supp> = <Boolean>

<19.2_supp> = <Boolean>

<93.75_supp> = <Boolean>

<187.5_supp> = <Boolean>

<500_supp> = <Boolean>

<1.5M_supp> = <Boolean>

<MaxTsdr_9.6> = <Unsigned16>

<MaxTsdr_19.2> = <Unsigned16>

<MaxTsdr_93.75> = <Unsigned16>

<MaxTsdr_187.5> = <Unsigned16>

<MaxTsdr_500> = <Unsigned16>

<MaxTsdr_1.5M> = <Unsigned16>

<Repeater_Ctrl_Sig> = <Unsigned8>

<24V_Pins> = <Unsigned8>

<Download_supp> = <Boolean>

<Upload_supp> = <Boolean>

<Act_Para_Brct_supp> = <Boolean>

<Act_Param_supp> = <Boolean>

<Max_MPS_Length> = <Unsigned32>

<Max_Lsdu_MM> = <Unsigned8>

<Max_Lsdu_MS> = <Unsigned8>

<Min_Poll_Timeout> = <Unsigned16>

<Trdy_9.6> = <Unsigned8>

<Trdy_19.2> = <Unsigned8>

<Trdy_93.75> = <Unsigned8>

<Trdy_187.5> = <Unsigned8>

<Trdy_500> = <Unsigned8>

<Trdy_1.5M> = <Unsigned8>

<Tqui_9.6> = <Unsigned8>

<Tqui_19.2> = <Unsigned8>

<Tqui_93.75> = <Unsigned8>

<Tqui_187.5> = <Unsigned8>

<Tqui_500> = <Unsigned8>

<Tqui_1.5M> = <Unsigned8>

<Tset_9.6> = <Unsigned8>

<Tset_19.2> = <Unsigned8>

<Tset_93.75> = <Unsigned8>

<Tset_187.5> = <Unsigned8>

<Tset_500> = <Unsigned8>

<Tset_1.5M> = <Unsigned8>

<Tsdi_9.6> = <Unsigned16>

<Tsdi_19.2> = <Unsigned16>

<Tsdi_93.75> = <Unsigned16>

<Tsdi_187.5> = <Unsigned16>

<Tsdi_500> = <Unsigned16>

<Tsdi_1.5M> = <Unsigned16>

<LAS_Len> = <Unsigned8>

<Max_Slaves_supp> = <Unsigned8>

<Freeze_Mode_supp> = <Boolean>

<Sync_Mode_supp> = <Boolean>

<Set_Slave_Add_supp> = <Boolean>

<Auto_Baud_supp> = <Boolean>

<User_Prm_Data_Len> = <Unsigned8>

<User_Prm_Data> = <Octet-String>

<User_Prm_Data_Def> = <Octet-String>

<Min_Slave_Intervall> = <Unsigned16>

<Modular_Station> = <Boolean>

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<Max_Module> = <Unsigned8>

<Max_Input_Len> = <Unsigned8>

<Max_Output_Len> = <Unsigned8>

<Max_Data_Len> = <Unsigned16>

<Diag_Text> = <Visible-String>

<First_Bit> = <Unsigned16> { 0 <= <First-Bit> <= 510 }

<Last_Bit> = <Unsigned16> { 1 <= <Last-Bit> <= 511 }

<Mod_Name> = <Visible-String>

<Error_Type> = <Unsigned8> { 16 <= <Error_Type> <= 31 }

<Value-Item> =

Value(<Value>)[<WS>]=[<WS>]<Diag_Text><LineEnd>

<Value_List> = <Value_Item> | <Value-List><Value-Item>

<Unit-Diag-Area-Def> =

Unit_Diag_Area[<WS>]=[<WS>]<First-Bit>-<Last-Bit><LineEnd>

<Value-List>

Unit_Diag_Area_End<LineEnd>

<Channel-Diag-Definition> =

Channel_Diag(<Value>)[<WS>]=[<WS>]<Diag_Text><LineEnd>

<Unit-Def-Item> =

Vendor_Name[<WS>]=[<WS>]<Vendor_Name><LineEnd>

| Model_Name[<WS>]=[<WS>]<Model_Name><LineEnd>

| Revision[<WS>]=[<WS>]<Revision><LineEnd>

| Ident_Number[<WS>]=[<WS>]<Ident_Number><LineEnd>

| Protocol_Ident[<WS>]=[<WS>]<Protocol_Ident><LineEnd>

| Station_Type[<WS>]=[<WS>]<Station_Type><LineEnd>

| Hardware_Release[<WS>]=[<WS>]<Hardware-Release><LineEnd>

| Software_Release[<WS>]=[<WS>]<Software-Release><LineEnd>

| 9.6_supp[<WS>]=[<WS>]<9.6_supp><LineEnd>

| 19.2_supp[<WS>]=[<WS>]<19.2_supp><LineEnd>

| 93.75_supp[<WS>]=[<WS>]<93.75_supp><LineEnd>

| 187.5_supp[<WS>]=[<WS>]<187.5_supp><LineEnd>

| 500_supp[<WS>]=[<WS>]<500_supp><LineEnd>

| 1.5M_supp[<WS>]=[<WS>]<1.5M_supp><LineEnd>

| MaxTsdr_9.6[<WS>]=[<WS>]<MaxTsdr_9.6><LineEnd>

| MaxTsdr_19.2[<WS>]=[<WS>]<MaxTsdr_19.2><LineEnd>

| MaxTsdr_93.75[<WS>]=[<WS>]<MaxTsdr_93.75><LineEnd>

| MaxTsdr_187.5[<WS>]=[<WS>]<MaxTsdr_187.5><LineEnd>

| MaxTsdr_500[<WS>]=[<WS>]<MaxTsdr_500><LineEnd>

| MaxTsdr_1.5M[<WS>]=[<WS>]<MaxTsdr_1.5M><LineEnd>

| Redundancy[<WS>]=[<WS>]<Redundancy><LineEnd>

| Repeater_Ctrl_Sig[<WS>]=[<WS>]<Repeater_Ctrl_Sig><LineEnd>

| 24V_Pins[<WS>]=[<WS>]<24V_Pins><LineEnd>

| Download_supp[<WS>]=[<WS>]<Download_supp><LineEnd>

| Upload_supp[<WS>]=[<WS>]<Upload_supp><LineEnd>

| Act_Para_Brct_supp[<WS>]=[<WS>]<Act_Para_Brct_supp><LineEnd>

| Act_Param_supp[<WS>]=[<WS>]<Act_Param_supp><LineEnd>

| Max_MPS_Length[<WS>]=[<WS>]<Max_MPS_Length><LineEnd>

| Max_Lsdu_MM[<WS>]=[<WS>]<Max_Lsdu_MM><LineEnd>

| Max_Lsdu_MS[<WS>]=[<WS>]<Max_Lsdu_MS><LineEnd>

| Min_Poll_Timeout[<WS>]=[<WS>]<Min_Poll_Timeout><LineEnd>

| Trdy_9.6[<WS>]=[<WS>]<Trdy_9.6><LineEnd>

| Trdy_19.2[<WS>]=[<WS>]<Trdy_19.2><LineEnd>

| Trdy_93.75[<WS>]=[<WS>]<Trdy_93.75><LineEnd>

| Trdy_187.5[<WS>]=[<WS>]<Trdy_187.5><LineEnd>

| Trdy_500[<WS>]=[<WS>]<Trdy_500><LineEnd>

| Trdy_1.5M[<WS>]=[<WS>]<Trdy_1.5M><LineEnd>

| Tqui_9.6[<WS>]=[<WS>]<Tqui_9.6><LineEnd>

| Tqui_19.2[<WS>]=[<WS>]<Tqui_19.2><LineEnd>

| Tqui_93.75[<WS>]=[<WS>]<Tqui_93.75><LineEnd>

| Tqui_187.5[<WS>]=[<WS>]<Tqui_187.5><LineEnd>

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| Tqui_500[<WS>]=[<WS>]<Tqui_500><LineEnd>

| Tqui_1.5M[<WS>]=[<WS>]<Tqui_1.5M><LineEnd>

| Tset_9.6[<WS>]=[<WS>]<Tset_9.6><LineEnd>

| Tset_19.2[<WS>]=[<WS>]<Tset_19.2><LineEnd>

| Tset_93.75[<WS>]=[<WS>]<Tset_93.75><LineEnd>

| Tset_187.5[<WS>]=[<WS>]<Tset_187.5><LineEnd>

| Tset_500[<WS>]=[<WS>]<Tset_500><LineEnd>

| Tset_1.5M[<WS>]=[<WS>]<Tset_1.5M><LineEnd>

| Tsdi_9.6[<WS>]=[<WS>]<Tsdi_9.6><LineEnd>

| Tsdi_19.2[<WS>]=[<WS>]<Tsdi_19.2><LineEnd>

| Tsdi_93.75[<WS>]=[<WS>]<Tsdi_93.75><LineEnd>

| Tsdi_187.5[<WS>]=[<WS>]<Tsdi_187.5><LineEnd>

| Tsdi_500[<WS>]=[<WS>]<Tsdi_500><LineEnd>

| Tsdi_1.5M[<WS>]=[<WS>]<Tsdi_1.5M><LineEnd>

| LAS_Len[<WS>]=[<WS>]<LAS_Len><LineEnd>

| Max_Slaves_supp[<WS>]=[<WS>]<Max_Slaves_supp><LineEnd>

| Freeze_Mode_supp[<WS>]=[<WS>]<Freeze_Mode_supp><LineEnd>

| Sync_Mode_supp[<WS>]=[<WS>]<Sync_Mode_supp><LineEnd>

| Auto_Baud_supp[<WS>]=[<WS>]<Auto_Baud_supp><LineEnd>

| Set_Slave_Add_supp[<WS>]=[<WS>]<Set_Slave_Add_supp><LineEnd>

| User_Prm_Data_Len[<WS>]=[<WS>]<User_Prm_Data_Len><LineEnd>

| User_Prm_Data[<WS>]=[<WS>]<User_Prm_Data><LineEnd>

| User_Prm_Data_Def[<WS>]=[<WS>]<User_Prm_Data_Def><LineEnd>

| Min_Slave_Intervall[<WS>]=[<WS>]<Min_Slave_Intervall><LineEnd>

| Modular_Station[<WS>]=[<WS>]<Modular_Station><LineEnd>

| Max_Module[<WS>]=[<WS>]<Max_Module><LineEnd>

| Max_Input_Len[<WS>]=[<WS>]<Max_Input_Len><LineEnd>

| Max_Output_Len[<WS>]=[<WS>]<Max_Output_Len><LineEnd>

| Max_Data_Len[<WS>]=[<WS>]<Max_Data_Len><LineEnd>

| Unit_Diag_Bit(<Bit>)[<WS>]=[<WS>]<Diag_Text><LineEnd>

| <Unit-Diag-Area-Def>

| <Channel-Diag-Definition>

| <User-Definition>

<Unit-Definition-List> =

<Unit-Def-Item> | <Unit-Definition-List><Unit-Def-Item>

<Module-Def-Item> =

<Channel-Diag-Definition>

| <User-Definition>

<Module-Def-List> =

<Module-Def-Item> | <Module-Def-List><Module-Def-Item>

<Module-Definition> =

Module[<WS>]=[<WS>]<Mod_Name><WS><Config><LineEnd>

<Module-Def-List>

EndModule<LineEnd>

<Module-Definition-List> =

<Module-Definition> | <Module-Definition-List><Module-Definition>

<GSD> =

[<Any-Text>]

#Profibus_DP<LineEnd>

<Unit-Definition-List>

<Module-Definition-List>

[#<Key word><LineEnd>[<Any-Text>]]

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14.3.6 Examples for DDB-File Entries

Example 1:

#Profibus_DP

Vendor_Name = "Tretter,Weber,Szabo,Schweigert"

Model_Name = "Emmerling,Volz,Thiesmeier"

Revision = "3.0 Hindelang"

Protocol_Ident = 0

Station_Type = 0

Hardware_Release = "V1.0"

Software_Release = "V1.1"

Trdy_1.5M = 11; Master is recipient after 11 bit times

Modular_Station = 1; modular DP-Slave

Unit_Diag_Bit(0) = "Error on Input 1"

Unit_Diag_Bit(1) = "Error on Input 2"

; the text "Error on Input 1" is assigned to the LSB (Bit0) of the

; device related diagnostic field.

; the text "Error on Input 2" is assigned to the Bit 1 of the

; device related diagnostic field.

;

Unit_Diag_Area = 1-5

Value(1) = "Error on Input 1 and 2"

Value(2) = "Power failure"

Value(3) = "Valve 1 out of function"

Unit_Diag_Area_End

; A bit field from bit 1 until bit 5 is created in the device

; related diagnostic field. Error messages are issued via this bit

; field. If, as an Example the value 2 (x,x,0,0,0,1,0,x) is issued,

; the error message "Power failure" is displayed on a

; centralized display.

;

Module = "Input module 16I-GT" 0x11

Channel_Diag(16) = "Overtemperature or Overload"

Channel_Diag(17) = "Cable broken or short circuit"

EndModule

Module = "Output module 32O-0.5A" 0x23

Channel_Diag(16) = "Overtemperature or Overload"

Channel_Diag(17) = "Cable broken or short circuit"

EndModule

;

; At a modular DP-Slave two different modules are applicable.

; Module one is an input module with 16 bits with the name

; "Input module 16I-GT" and the identifier 11H. For this module a

; channel related diagnostic, and a vendor specific error

; type 17 "Cable broken or short circuit", and a error type 16

; "Over temperature or Overload" exist.

; Module 2 is an output module with 32 bits with the name

; "Output module 32O-0.5A" and the identifier 23H. For the

; channel related diagnostic of this module, a vendor specific

; error type 17 "Cable broken or short circuit" and the error

; type 16 "Over temperature or Overload" exist.

Example 2:

Unit_Diag_Area = 0-5

Value(0) = "No error"

Value(1) = "Error on Input 0 - 23"

Value(2) = "Error on Output 0 - 15"

Value(3) = "24V failed"

Unit_Diag_Area_End

;

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Module = "DP compact device 24I/16A" 0x12,0x21

EndModul

; Here, a compact DP-device is described with the name

; "DP compact device 24I/16A" with the identifiers 12H, 21H.

; In the device related diagnostic field a bit field 0 to 5 is

; defined, through which 4 status/error messages may be handled.

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15 Application Characteristics

15.1 Restrictions

In the PROFIBUS-DP system, the maximal PDU size is restricted to 246 bytes as

specified in the Data Link Layer Service Protocol Specifications. Preferably,

the PDU size should not exceed 32 bytes.

This substantiates on the components that have been available at specification

time of this specification. For future applications it is possible to use the

maximum possible PDU size of 246 byte.

15.2 Time Behaviour

The following diagram shows the theoretical system reaction time (see section

"System Reaction Time") of a DP-Master (class 1) in dependance of the connected

amount of DP-Slaves with 2 bytes input- and output-data each.

It is presumed that all configured DP-Slaves are in the user data exchange mode

with no diagnostic message pending. The DP-Slaves answer immediately after the

minimum Station Delay Timer (min T

SDR

= 11 t

Bit

) is expired. At the DP-Master

(class 1) T

SDI

is assumed as 37 bit times.

0 ms

2 ms

4 ms

6 ms

8 ms

10 ms

12 ms

14 ms

16 ms

18 ms

Slave

Slaves

1500 kBit/s

500 kBit/s

Figure 42. Cycle time of the DP-system

15.3 Manufacturer Identifier

The manufacturer identifier (Ident_Number) is necessary for all DP-devices

except for DP-Master (class 2). For each type of device an individual

manufacturer identifier will be needed. This manufacturer identifier is not a

series number. If a manufacturer have got a manufacturer identifier for one type

of device it is allowed to him to use this number for all produced devices of

the same type. At devices of the same type but with differences in the amount of

inputs and outputs it is possible to use the same manufacturer identifier for

each produced DP-device. Assumption: The device can be described in the DDB as a

modular device.

Each device type shall have an individual Ident_Number. This Ident_Number will

be issued by the PNO (PROFIBUS Nutzerorganisation e.V.).