Prosoft-technology MVI69-PDPMV1 Manual do Utilizador descarregar pdf (Página 106)

Mailbox Messaging MVI69-PDPMV1 ♦ CompactLogix or MicroLogix Platform

User Manual PROFIBUS DPV1 Master

Page 106 of 225 ProSoft Technology, Inc.

July 8, 2011

4.4.9 Mailbox Message: Class 1 Acyclic Data Read

This command initiates a DPV1 Class 1 acyclic read request. Refer to EN50170

(DPV1) for more information.

Parameter Description

Command Initiator Application

Command Name MSAC1 READ

Command Number 2000h

Fragmented No

Extended Header Data Fault information may be returned in the header of the response.

Command and Response Layout: Acyclic Read

Command Response

Message ID

(ID)

Message information 4002h

0002h

Command 0020h

0020h Acyclic Read

Data size 0000h

(Size of data) Number of data bytes (n)

Frame count 0001h

0001h

Frame number 0001h

0001h

Offset high 0000h

0000h

Offset low 0000h

0000h

Extended word 1 Slave Addr. Slot Number Slave Addr. Slot Number

Extended word 2 Index Length Index Length

Extended word 3 -

Extended word 4 -

Extended word 5 -

Error

Decode

Extended word 6 -

Error Code 1

Error Code 2

Extended word 7 -

Extended Fault information

Extended word 8 -

Fault Information

Data 1 Response Data byte 1

Data 2 Response Data byte 1

Data 3 Response Data byte 1

... ...

Data n Response Data byte 1

1 2 ... 101 102 103 104 105 106 107 108 109 110 111 ... 224 225

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