Prosoft-technology MVI56-PDPMV1 Bedienungsanleitung PDF herunterladen (Seite 148)

Mailbox Messaging MVI56-PDPMV1 ♦ ControlLogix Platform

User Manual PROFIBUS DPV1 Master

Page 148 of 255 ProSoft Technology, Inc.

March 22, 2011

3.4 Special Function Mailbox Messaging Commands

The MVI56-PDPMV1 module supports some extended PROFIBUS functions,

using a mailbox data exchange mechanism implemented in the module.

The MVI56-PDPMV1 module supports the following special functions through

this mailbox messaging scheme:

Initiated from Processor

Message Description

Set Operation Mode Controls the operating state of the PROFIBUS Master

Set Slave Mode Sends special control command to one or several slaves

(Sync/Freeze)

Get Slave Diag Gets diagnostic information from a slave

Get Slave Config Gets slave configuration

Set Slave Address Sets node address of a slave (if supported by the slave)

Get Live List Gets information from all nodes on the network

MSAC1 Read DPV1 acyclic read (Class 1)

MSAC1 Write DPV1 acyclic write (Class 1)

Start Slave Starts slaves dynamically

Stop Slave Stops slaves dynamically

DPV1 Alarm Handling: Generated by Slave Devices

Message Description

Alarm Indications Spontaneous alarm indication from DPV1 slave. Structure of

data is slave-dependent

Alarm Confirmation This message is sent by the MVI56 module automatically as a

confirmation to the alarm indications.

The provided Function Blocks simplify the processor logic required to implement

these messaging mailbox exchanges.

Sending a mailbox message to the MVI56-PDPMV1 module is a relatively simple

process; however, it is important to follow a certain sequence.

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Prosoft-technology MVI56-PDPMV1 Bedienungsanleitung Seite 148