Prosoft-technology MVI69-PDPMV1 Manuale Utente Scaricare il pdf (Pagina 118)

Mailbox Messaging MVI69-PDPMV1 ♦ CompactLogix or MicroLogix Platform

User Manual PROFIBUS DPV1 Master

Page 118 of 225 ProSoft Technology, Inc.

July 8, 2011

4.4.13 Mailbox Message: Class 2 Acyclic Data Write

This command issues a Class 2 DPV1 acyclic write request to a slave. Prior to

issuing this command, a connection to the slave must have been established,

see Initiate Class 2 Connection (page 110).

Parameter Description

Command Initiator Application

Command Name FB_APPL_MSAC2_WRITE

Command Number 0028h

Fragmented No

Command and Response Layout: Class 2 Acyclic Write

Command Response

Message ID

(ID)

Message information 4002h

0002h

Command 0028h

0028h Class 2 Acyclic Write

Data size (data size)

(data size) Number of data bytes (n)

Frame count 0001h

0001h

Frame number 0001h

0001h

Offset high 0000h

0000h

Offset low 0000h

0000h

Extended word 1 C_REF C_REF

Extended word 2 Slot Index Slot Index

Extended word 3 Length -

Length -

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

Message Data byte 1 Write Data

Write Data Response Data byte 1

Message Data byte 2

Response Data byte 2

Message Data byte 3

Response Data byte 3

---

...

Message Data byte (n)

Response Data byte n

1 2 ... 113 114 115 116 117 118 119 120 121 122 123 ... 224 225

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