ProSoft Technology PTQ-PDPMV1 - Manual (Page 252)

Reference PTQ-PDPMV1 ♦ Quantum Platform
User Manual PROFIBUS DP Master Network Interface Module for Quantum
Page 252 of 306 ProSoft Technology, Inc.
August 12, 2014
Input Data Block from Module to Processor (991 Words Maximum)
Word Offset Description
0 to 78 Configuration and status data
79 to 222 Incoming Mailbox Message data: 144-word Incoming Message
block
223 to n PROFIBUS Input Data: Data received from the PROFIBUS
slave devices on the network
Total size of the PROFIBUS Input Data block is a function of
the PROFIBUS network configuration. Maximum size is 1536
bytes (768 words).
n is a function of the user-selected size of the PROFIBUS Input
Data block.
Output Data Block from Processor to Module (918 Words Maximum)
Word Offset Description
0 Last In Mailbox Message ID
1 Last Alarm Control Index
2 to 3 PROFIBUS CRC32: computed for PROFIBUS configuration
4 to 5 Module CRC32: computed for module data
When the module first starts up or recognizes an initialization of
the processor, it will compare the values of the two CRCs in the
input and output images. If either one of the CRCs does not
match, the module will be placed in STOP mode. If each set
matches, the module will be placed in OPERATE mode.
6 to 149 Outgoing Mailbox data: Mailbox Message command being sent
to the PTQ module
150 to n PROFIBUS Output Data: Data going to the PROFIBUS
network
Total size of the PROFIBUS Output Data block is a function of
the PROFIBUS network configuration. Maximum size is 1536
bytes (768 words).
n is a function of the user-selected size of the PROFIBUS
Output Data block.