ProSoft Technology MVI56-PDPMV1 - Manual (Page 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.