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.
