ProSoft Technology MVI46-PDPMV1 - Manual (Page 65)

MVI46-PDPMV1 ♦ SLC Platform Mailbox Messaging
PROFIBUS DPV1 Master User Manual
ProSoft Technology, Inc. Page 65 of 160
March 25, 2011
4.2 Special Function Mailbox Messaging Commands
The MVI46-PDPMV1 module supports some extended PROFIBUS functions
using a mailbox data exchange mechanism.
The MVI46-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 MVI46 module automatically as a
confirmation to the alarm indications.
The provided simplified ladder logic is required to implement these messaging
mailbox exchanges.
Sending a mailbox message to the MVI46-PDPMV1 module is a relatively simple
process, however, it is important to follow a certain sequence.