Спецификация протокола Profibus
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Page 401
PROFIBUS-Specification-Normative-Parts-6:1997
Copyright by PNO 1997 - all rights reserved
Master/Requester . Slave/Responder
.
FMA7/ . FMA7/
User!FMS LLI FDL BUS FDL LLI FMS !User
=====!====!=============!======.======!=============!====!=====
! ! ! ! INI.res
! ! ! ! <#9,R->
! ! ! ! <----
! ! ! ![INI_ERR_
! ! ! ! PDU]
! ! ! !ASS.res
! ! ! !<#9,R-,
! ! ! !LLI SAP,
! ! ! !INI_ERR_
! ! ! !PDU>
! ! ![ASS_NRS_PDU]!<----
! ! !"stop T1 !
! ! !"start T2 !
! ! !(FDL_REPLY_ !
! ! ! UPDATE.req) !
! ! (--!<------[ !
ASS.con ! ! (--!------>] !
<#7,R-, ! ! !(FDL_REPLY_ !
LLI SAP,! !*no Data ! UPDATE.con) !
INI_ERR_! ![SRD_REQ_PDU]! !
PDU> ! ! ]------->!----->] !
<----!<------------!<-----------/!(FDL_DATA_ !
!(FDL_CYC_DATA![SRD_RES_PDU]! REPLY.ind) !
! _REPLY.con) !*ASS_NRS_PDU ! !
! !**INI_ERR_PDU! "stop T2 !
!"stop T1 ! ! !
!"start T2 ! ! !
! ! ! !
!"disable ! !\CN open: !
INI.con ! Polling ! !"deactivate !
<#7,R-> !(FDL_CYC_POLL! ! FDL Access !
<---- ! _ENTRY.req) ! ! Protection !
! ]------>!--) ! !
! [<------!--) ! !
!(FDL_CYC_POLL! ! !
! _ENTRY.con) ! ! !
! ! ! !
!"stop T2 ! ! !
! ! ! !
Figure 40. Master-Slave Communication Relationship / all Connection Types /
Connection Establishment / Negative Response
Page 402
PROFIBUS-Specification-Normative-Parts-6:1997
Copyright by PNO 1997 - all rights reserved
Master/Requester . Slave/Responder
.
FMA7/ . FMA7/
User!FMS LLI FDL BUS FDL LLI FMS !User
=====!====!=============!======.======!=============!====!=====
INI.req ! ! ! !
<#7> ! ! ! !
----> ! ! ! !
[INI_REQ_ ! ! ! !
PDU] ! ! ! !
ASS.req ![ASS_REQ_PDU]! ! !
<#7,LLI !"start T1 ! ! !
SAP,INI_ !(FDL_SEND_ ! ! !
REQ_PDU> ! UPDATE.req) ! ! !
----->! ]------->!--) ! !
! [<-------!--) ! !
!(FDL_SEND_ ! ! !
! UPDATE.con) ! ! !
!"enable ! ! !
! Polling ! ! !
!(FDL_CYC_POLL! ! !
! _ENTRY.req) ! ! !
! ]------>!--) ! !
! [<------!--) ! !
!(FDL_CYC_POLL! ! !
! _ENTRY.con) !**INI_REQ_PDU! !
! !*ASS_REQ_PDU !(FDL_DATA_ !
! ![SRD_REQ_PDU]! REPLY.ind) !
! ! ]------->!------->] !
! [<------!<-----------/!\LLI LLI !
!(FDL_CYC_DATA![SRD_RES_PDU]! Context Test!
! _REPLY.con) !*no Data ! negative !
! ! ![ABT_REQ_PDU]!
! ! !"start T2 !
! ! !(FDL_REPLY_ !
! ! ! UPDATE.req) !
! ! (--!<------[ !
ABT.ind ! ! (--!------>] !
<#7,LLI ! !*no Data !(FDL_REPLY_ !
SAP,LG, ! ![SRD_REQ_PDU]! UPDATE.con) !
ID,RC,AD>! ! ]------->!------->] !
<----!<------------!<-----------/!(FDL_DATA_ !
!(FDL_CYC_DATA![SRD_RES_PDU]! REPLY.ind) !
! _REPLY.con) !*ABT_REQ_PDU ! !
!"stop T1 ! !"stop T2 !
<---- !"start T2 ! ! !
ABO.ind !"disa. Poll. ! ! !
<#7,LG,ID,!(FDL_CYC_POLL! ! !
RC,AD> ! _ENTRY.req) ! ! !
! ]------>!--) ! !
! [<------!--) ! !
!(FDL_CYC_POLL! ! !
! _ENTRY.con) ! ! !
!"stop T2 ! ! !
Figure 41. Master-Slave Communication Relationship / all Connection Types /
Connection Establishment / LLI-LLI Context Test negative
Page 403
PROFIBUS-Specification-Normative-Parts-6:1997
Copyright by PNO 1997 - all rights reserved
Master/Requester . Slave/Responder
.
FMA7/ . FMA7/
User!FMS LLI FDL BUS FDL LLI FMS!User
=====!====!=============!======.======!=============!====!=====
INI.req ! ! ! !
<#7> ! ! ! !
----> ! ! ! !
! ! ! !
[INI_REQ_ ! ! ! !
PDU] ! ! ! !
ASS.req ! ! ! !
<#7,LLI ! ! ! !
SAP,INI_ ! ! ! !
REQ_PDU> ! ! ! !
---->! ! ! !
!\ faulty ! ! !
! CRL Entry ! ! !
ABT.ind ! ! ! !
<#7,LLI ! ! ! !
SAP,LG, ! ! ! !
ID,RC,AD>! ! ! !
<----!<-----] ! ! !
! ! ! !
ABO.ind ! ! ! !
<#7,LG,ID,! ! ! !
RC,AD> ! ! ! !
<---- ! ! ! !
! ! ! !
Figure 42. Master-Slave Communication Relationship / all Connection Types /
Connection Establishment / Request / local Error: CRL Entry faulty
Page 404
PROFIBUS-Specification-Normative-Parts-6:1997
Copyright by PNO 1997 - all rights reserved
Master/Requester . Slave/Responder
.
FMA7/ . FMA7/
User!FMS LLI FDL BUS FDL LLI FMS!User
=====!====!=============!======.======!=============!====!=====
INI.req ! ! ! !
<#7> ! ! ! !
----> ! ! ! !
[INI_REQ_ ! ! ! !
PDU] ! ! ! !
ASS.req ! ! ! !
<#7,LLI ! ! ! !
SAP,INI_ !\CN in LLI ! ! !
REQ_PDU> ! still in ! ! !
---->! Data Trans- ! ! !
! fer Phase ! ! !
ABT.ind ![ABT_REQ_PDU]! ! !
<#7,LLI !"start T2 ! ! !
SAP,LG, ! ! ! !
ID,RC,AD>! ! ! !
<----!<-----] ! ! !
! ! ! !
ABO.ind !(FDL_SEND_ ! ! !
<#7,LG,ID,! UPDATE.req) ! ! !
RC,AD> ! ]------!--) ! !
<---- ! [<-----!--) ! !
!(FDL_SEND_ ! ! !
! UPDATE.con) ! ! !
!\PEE = false:! ! !
!"enable ! ! !
! Polling ! ! !
!(FDL_CYC_POLL! ! !
! _ENTRY.req) ! ! !
! ]------>!--) ! !
! [<------!--) ! !
!(FDL_CYC_POLL! ! !
! _ENTRY.con) ! ! !
! !*ABT_REQ_PDU !(FDL_DATA_ !
! ![SRD_REQ_PDU]! REPLY.ind) !
! ! ]------>!----->] !
! [<-----!<-----------/! !
! ![SRD_RES_PDU]!\CN in LLI !
!(FDL_CYC_DATA!*no Data ! released: !
! _REPLY.con) ! !"ignore Data !
! ! ! !
!"disable ! ! !
! Polling ! ! !
!(FDL_CYC_POLL! ! !
! _ENTRY.req) ! ! !
! ]------>!--) ! !
! [<------!--) ! !
!(FDL_CYC_POLL! ! !
! _ENTRY.con) ! ! !
!"stop T2 ! ! !
Figure 43. Master-Slave Communication Relationship / all Connection Types /
Connection Establishment / Local Error: Connection still established
in local LLI
Page 405
PROFIBUS-Specification-Normative-Parts-6:1997
Copyright by PNO 1997 - all rights reserved
Master/Requester . Slave/Responder
.
FMA7/ . FMA7/
User!FMS LLI FDL BUS FDL LLI FMS!User
=====!====!=============!======.======!=============!====!=====
INI.req ! ! ! !
<#7> ! ! ! !
----> ! ! ! !
[INI_REQ_ ! ! ! !
PDU] ! ! ! !
ASS.req ![ASS_REQ_PDU]! ! !
<#7,LLI !"start T1 ! ! !
SAP,INI_ !(FDL_SEND_ ! ! !
REQ_PDU> ! UPDATE.req) ! ! !
---->! ]------->!--) ! !
! [<-------!--) ! !
!(FDL_SEND_ ! ! !
! UPDATE.con) ! ! !
!"enable ! ! !
! Polling ! ! !
!(FDL_CYC_POLL! ! !
! _ENTRY.req) ! ! !
! ]------>!--) ! !
! [<------!--) ! !
!(FDL_CYC_POLL!**INI_REQ_PDU! !
! _ENTRY.con) !*ASS_REQ_PDU !(FDL_DATA_ !
! ![SRD_REQ_PDU]! REPLY.ind) !
! ! ]------->!------->] !
! [<------!<-----------/!\CN still in !
!(FDL_CYC_DATA![SRD_RES_PDU]! Data Trans- !
! _REPLY.con) !*no Data ! fer Phase !
! ! ![ABT_REQ_PDU]!
! ! !"start T2 !
! ! !(FDL_REPLY_ !
! ! ! UPDATE.req) !
! ! (--!<------[ !
ABT.ind ! ! (--!------>] !
<#7,LLI ! !*no Data !(FDL_REPLY_ !
SAP,LG, ! ![SRD_REQ_PDU]! UPDATE.con) !
ID,RC,AD>! ! ]------->!------->] !ABT.ind
<----!<------------!<-----------/!(FDL_DATA_ !<#9,LLI
!(FDL_CYC_DATA![SRD_RES_PDU]! REPLY.ind) !SAP,LG,
ABO.ind ! _REPLY.con) !*ABT_REQ_PDU ! !ID,RC,AD>
<#7,LG,ID,!"stop T1 ! ! [----!---->
RC,AD> !"start T2 ! ! !
<---- !"disable ! ! !
! Polling ! ! ! ABO.ind
!(FDL_CYC_POLL! !\CN open: !<#9,LG,ID,
! _ENTRY.req) ! !"deactivate ! RC,AD>
! ]------>!--) !FDL Access ! ---->
! [<------!--) ! Protection !
!(FDL_CYC_POLL! !"stop T2 !
! _ENTRY.con) ! ! !
!"stop T2 ! ! !
Figure 44. Master-Slave Communication Relationship / all Connection Types /
Connection Establishment / Error: Connection still established in
remote LLI
Page 406
PROFIBUS-Specification-Normative-Parts-6:1997
Copyright by PNO 1997 - all rights reserved
Master/Requester . Slave/Responder
FMA7/ . FMA7/
User!FMS LLI FDL BUS FDL LLI FMS!User
=====!====!=============!======.======!=============!====!=====
INI.req ! ! ! !
<#7> ! ! ! !
----> ! ! ! !
[INI_REQ_ ! ! ! !
PDU] ! ! ! !
ASS.req ![ASS_REQ_PDU]! ! !
<#7,LLI !"start T1 ! ! !
SAP,INI_ !(FDL_SEND_ ! ! !
REQ_PDU> ! UPDATE.req) ! ! !
---->! ]------->!--) ! !
! [<-------!--) ! !
!(FDL_SEND_ ! ! !
! UPDATE.con) ! ! !
!"enable ! ! !
! Polling ! ! !
!(FDL_CYC_POLL! ! !
! _ENTRY.req) ! ! !
! ]------>!--) ! !
! [<------!--) ! !
!(FDL_CYC_POLL!**INI_REQ_PDU! !
! _ENTRY.con) !*ASS_REQ_PDU !(FDL_DATA_ !
! ![SRD_REQ_PDU]! REPLY.ind) !
! ! ]------->!------->] !
! [<------!<-----------/!\LLI-LLI !ASS.ind
!(FDL_CYC_DATA![SRD_RES_PDU]! Context Test!<#9,LLI
! _REPLY.con) !*no Data ! positive !SAP,INI_
! ! !"start T1 !REQ_PDU>
! ! ! ]------->!---->
!\T1 expired ! !\CN open: ! INI.ind
![ABT_REQ_PDU]! !"activate ! <#9>
!"start T2 ! ! FDL Access ! ---->
!(FDL_SEND_ ! ! Protection !
! UPDATE.req) ! ! !
! ]------!--) ! !ABT.ind
ABT.ind ! [<-----!--) ! !<#9,LLI
<#7,LLI !(FDL_SEND_ !*ABT_REQ_PDU !(FDL_DATA_ !SAP,LG,
SAP,LG, ! UPDATE.con) ![SRD_REQ_PDU]! REPLY.ind) !ID,RC,AD>
ID,RC,AD>! ! ]------>!------------>!---->
<----!-------------!<-----------/! !
!(FDL_CYC_DATA![SRD_RES_PDU]!"stop T1 !
ABO.ind ! _REPLY.con) !*no Data ! ! ABO.ind
<#7,LG,ID,!"disa. Poll. ! !\CN open: ! <#9,LG,
RC,AD> !(FDL_CYC_POLL! !"start T2 ! ID,RC,AD>
<---- ! _ENTRY.req) ! !"deactivate ! ---->
! ]------>!--) ! FDL Access !
! [<------!--) ! Protection !
!(FDL_CYC_POLL! !"stop T2 !
! _ENTRY.con) ! ! !
!"stop T2 ! ! !
Figure 45. Master-Slave Communication Relationship / all Connection Types /
Connection Establishment / Error: T1 expired at the Master
Page 407
PROFIBUS-Specification-Normative-Parts-6:1997
Copyright by PNO 1997 - all rights reserved
Master/Requester . Slave/Responder
FMA7/ . FMA7/
User!FMS LLI FDL BUS FDL LLI FMS !User
=====!====!=============!======.======!=============!====!=====
INI.req ! ! ! !
<#7> ! ! ! !
----> ! ! ! !
[INI_REQ_ ! ! ! !
PDU] ![ASS_REQ_PDU]! ! !
ASS.req !"start T1 ! ! !
<#7,LLI !(FDL_SEND_ ! ! !
SAP,INI_ ! UPDATE.req) ! ! !
REQ_PDU> ! ]------->!--) ! !
---->! [<-------!--) ! !
!(FDL_SEND_ ! ! !
! UPDATE.con) ! ! !
!"enab. Poll. ! ! !
!(FDL_CYC_POLL! ! !
! _ENTRY.req) ! ! !
! ]------>!--) ! !
! [<------!--) ! !
!(FDL_CYC_POLL!**INI_REQ_PDU! !
! _ENTRY.con) !*ASS_REQ_PDU !(FDL_DATA_ !
! ![SRD_REQ_PDU]! REPLY.ind) !
! ! ]------->!------->] !ASS.ind
! [<------!<-----------/!\LLI-LLI Cont!<#9,LLI
!(FDL_CYC_DATA![SRD_RES_PDU]! Test pos. !SAP,INI_
! _REPLY.con) !*no Data !"start T1 !REQ_PDU>
! ! ! ]------->!---->
! ! !\CN open: !
! ! !"activate FDL!
! ! !Access Prot. !
! ! !\T1 expired ! INI.ind
! ! ![ABT_REQ_PDU]! <#9>
! ! !"start T2 ! ---->
! ! !(FDL_REPLY_ !
! ! ! UPDATE.req) !
! ! (--!<------[ !
ABT.ind ! ! (--!------>] !
<#7,LLI ! !*no Data !(FDL_REPLY_ !
SAP,LG, ! ![SRD_REQ_PDU]! UPDATE.con) !
ID,RC,AD>! ! ]------->!------->] !ABT.ind
<----!<------------!<-----------/!(FDL_DATA_ !<#9,LLI
!(FDL_CYC_DATA![SRD_RES_PDU]! REPLY.ind) !SAP,LG,
ABO.ind ! _REPLY.con) !*ABT_REQ_PDU ! !ID,RC,AD>
<#7,LG,ID,!"stop T1 ! ! [----!---->
RC,AD> !"start T2 ! ! !
<---- !"disa. Poll. ! !\CN open: !
!(FDL_CYC_POLL! !"deactivate ! ABO.ind
! _ENTRY.req) ! ! FDL Access ! <#9,LG,
! ]------>!--) !Protection ! ID,RC,AD>
! [<------!--) !"stop T2 ! ---->
!(FDL_CYC_POLL! ! !
! _ENTRY.con) ! ! !
!"stop T2 ! ! !
Figure 46. Master-Slave Commun. Relationship / all Connection Types /
Connection Establishment / Error: T1 expired at the Slave
Page 408
PROFIBUS-Specification-Normative-Parts-6:1997
Copyright by PNO 1997 - all rights reserved
6.3.2.3 Associate for Master-Master Communication Relationships
For master-master communication relationships each of the two masters may take
the initiative in connection establishment.
If the connection to be established is configured as a master-master communica-
tion relationship in the CRL, the Associate service of the LLI is mapped onto
the Layer 2 service SDA.
The following sequence charts (see the following eight figures) show examples of
possible connection establishment sequences.
Master/Requester . Master/Responder
.
FMA7/ . FMA7/
User!FMS LLI FDL BUS FDL LLI FMS!User
=====!====!=============!======.======!=============!====!=====
INI.req ! ! ! !
<#7> ! ! ! !
----> ! ! ! !
[INI_REQ_ ! ! ! !
PDU] ! ! ! !
ASS.req ! ! ! !
<#7,LLI ! ! ! !
SAP,INI_ ! ! ! !
REQ_PDU> ! ! ! !
---->![ASS_REQ_PDU]! ! !
!"start T1 ! ! !
!\CN open: ! ! !
!"activate ! ! !
! FDL LSAP ! ! !
! !**INI_REQ_PDU! !
!(FDL_DATA_ !*ASS_REQ_PDU !(FDL_DATA_ !
! ACK.req) ![SDA_REQ_PDU]! ACK.ind) !
! ]------>!------------>!-------->] !
! ]<------!<-----------/! !
!(FDL_DATA_ ![SDA_ACK_PDU]! !
! ACK.con) ! ! !
! ! !\LLI-LLI !
! ! ! Context Test!
! ! ! positive !
! ! !"start T1 !
! ! !\CN open: !
! ! !"activate !
! ! ! FDL Access !ASS.ind
! ! ! Protection !<#9,LLI
! ! ! !SAP,INI_
! ! ! !REQ_PDU>
! ! ! ]---->!------>
! ! ! ! INI.ind
! ! ! ! <#9>
! ! ! ! ----->
Figure 47. Master-Master Communication Relationship / Connection
Establishment / Request / LLI-LLI Context Test positive
Page 409
PROFIBUS-Specification-Normative-Parts-6:1997
Copyright by PNO 1997 - all rights reserved
Master/Requester . Master/Responder
.
FMA7/ . FMA7/
User!FMS LLI FDL BUS FDL LLI FMS !User
=====!====!=============!======.======!=============!====!=====
! ! ! ! INI.res
! ! ! ! <#9,R+>
! ! ! ! <----
! ! ! ![INI_RES_
! ! ! ! PDU]
! ! ! !
! ! ! !ASS.res
! ! ! !<#9,R+,
! ! ! !LLI SAP,
! ! ! !INI_RES_
! ! ! !PDU>
! ! ![ASS_RES_PDU]!<----
ASS.con ! ! ! !
<#7,R+, ! ! ! !
LLI SAP,! !**INI_RES_PDU! !
INI_RES ! !*ASS_RES_PDU !(FDL_DATA_ !
_PDU> ! ![SDA_REQ_PDU]! ACK.req) !
<----!<------------!<------------!<------[ !
!(FDL_DATA_ !\----------->!------>] !
! ACK.ind) ![SDA_ACK_PDU]!(FDL_DATA_ !
! ! ! ACK.con) !
INI.con ! ! ! !
<#7,R+> !"stop T1 ! !"stop T1 !
<---- ! ! ! !
! ! ! !
! ! ! !
! ! ! !
! ! ! !
Figure 48. Master-Master Communication Relationship / Connection
Establishment / Positive Response
Page 410
PROFIBUS-Specification-Normative-Parts-6:1997
Copyright by PNO 1997 - all rights reserved
Master/Requester . Master/Responder
.
FMA7/ . FMA7/
User!FMS LLI FDL BUS FDL LLI FMS !User
=====!====!=============!======.======!=============!====!=====
! ! ! ! INI.res
! ! ! ! <#9,R->
! ! ! ! <----
! ! ! ![INI_ERR_
! ! ! ! PDU]
! ! ! !
! ! ! !ASS.res
! ! ! !<#9,R-,
! ! ! !LLI SAP,
! ! ! !INI_ERR_
! ! ! !PDU>
! ! ![ASS_NRS_PDU]!<----
! ! !"stop T1 !
ASS.con ! ! !"start T2 !
<#7,R-, ! ! ! !
LLI SAP,! !**INI_ERR_PDU! !
INI_ERR! !*ASS_NRS_PDU !(FDL_DATA_ !
_PDU> ! ![SDA_REQ_PDU]! ACK.req) !
<----!<------------!<------------!<-------[ !
!(FDL_DATA_ !\----------->!------->] !
! ACK.ind) ![SDA_ACK_PDU]!(FDL_DATA_ !
! ! ! ACK.con) !
INI.con !"stop T1 ! ! !
<#7,R-> ! ! !\CN open: !
<---- !\CN open: ! !"deactivate !
!"start T2 ! ! FDL Access !
!"deactivate ! ! Protection !
! FDL LSAP ! ! !
!"stop T2 ! !"stop T2 !
! ! ! !
Figure 49. Master-Master Communication Relationship / Connection
Establishment / Negative Response