ProSoft Technology PTQ-PDPMV1 - Manual (Page 85)

PTQ-PDPMV1 ♦ Quantum Platform Configuring the Processor with Unity Pro
PROFIBUS DP Master Network Interface Module for Quantum User Manual
ProSoft Technology, Inc. Page 85 of 306
August 12, 2014
3.4 Using Mailbox Function Blocks
Function blocks define software components or modules that perform a specific
function. Each function block has its own, pre-defined set of inputs and outputs.
The function blocks provided with the PTQ-PDPMV1 module contain the logic to
handle acyclic mailbox messages and alarms. They transfer data between the
main output/input mailbox arrays and the corresponding slave devices.
3.4.1 Overview
The mailbox function blocks build mailbox requests to the module and read the
mailbox response from the module. These mailbox function blocks are optional,
meaning that the project will update PROFIBUS data and status information even
if no function blocks are used.