Verify Data Exchange
5604-RIO-PDPMV1
♦
ProLinx Standalone
Rockwell Automation® Remote I/O to PROFIBUS DP-V1 Master Gateway
ProSoft Technology, Inc.
Page 31 of 45
November 20, 2008
6.2 Verify
Acyclic
Communication (Mailbox Messaging)
The PROFIBUS DP V1 Master uses mailbox messages for acyclic
communication with other devices on the PROFIBUS network. Acyclic data is
transmitted in parallel with cyclic data communication, but with lower priory.
Each type of mailbox message has its own configuration area in PCB. In the
example configuration, the following mailbox messages are configured:
Set Operate Mode
Get Slave Diagnostic Data
Get Slave Configuration
Get Database Information
Get Live List
Acyclic
Read
Acyclic
Write
A mailbox command is executed when the PLC5 ladder logic sets a non-zero
trigger value via Remote I/O in the specified location in the 5604-RIO-PDPMV1
database. When the command is triggered, the module resets the trigger value to
zero to wait for the next command.
For this example, we will trigger the Get Live List mailbox command.
1
In ProSoft Configuration Builder, double-click on the
icon. This action opens the Edit Profibus Master Commands dialog box,
populated with one command.
