ProSoft Technology PTQ-PDPMV1 - Manual (Page 84)

Configuring the Processor with Unity Pro PTQ-PDPMV1 ♦ Quantum Platform
User Manual PROFIBUS DP Master Network Interface Module for Quantum
Page 84 of 306 ProSoft Technology, Inc.
August 12, 2014
Mailbox data values are pre-defined for the specific mailbox command.
The first statement represents the
Message Information of the command (4002h) Set Operating Mode (see specific
mailbox command).
Note: The information is byte swapped for PTQ Master module (Motorola big-endian format).
The remaining values [2] to [7] set the Command, Data Size, Frame Count,
Frame Number, Offset High and Low byte header information. Again, these
values are pre-defined and controlled by the FB.
Most mailbox commands have response information. Refer to Mailbox
Messaging (page 151) for more information. The response information will be
written to the area of the SetOperatingMode mailbox area. This
information can be read after the mailbox is received and confirmed by the ID
information contained in the CurrentMailboxControlIndex value.
When this statement is true and the Set Operating Command was executed the
following code will be executed:
The appropriate return value(s) for Set Operating Mode can now be read or
accessed in the In.Mode, ConfRequired and FaultInformation values.
Each mailbox command can be executed and responded to using similar
procedures as outlined above.