ProSoft Technology ProTalk PTQ-PDPMV1 User Manual page 80

Configuring the Processor with Unity Pro
User Manual
MailOut[0] = StatIn.MailBoxData_LastOutMailboxMessageID
Each mailbox data structure is implemented through variables that are divided
into Out and In data structures, where:
Out = values copied from the processor to the module
In = values copied from the module to the processor
Each Out data structure contains a Cmd bit. After the Cmd bit is toggled, the
logic will increment the mailbox ID (output) to send the mailbox request to the
module.
The following illustration shows the interface for the SetOperatingMode mailbox:
The following condition indicates that the module has a mailbox response to be
sent to the processor. Therefore, the function block implementation will handle
the block by copying the response data to the appropriate mailbox data structure.
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PROFIBUS DP Master Network Interface Module for Quantum
PTQ-PDPMV1 ♦ Quantum Platform
ProSoft Technology, Inc.
August 12, 2014