User manual

PTQ-PDPMV1 ♦ Quantum Platform Reference
PROFIBUS DP Master Network Interface Module for Quantum User Manual
ProSoft Technology, Inc. Page 253 of 306
August 12, 2014
Without Mailbox Messaging and With Slave Diagnostics
 Mailbox Messaging = N
 Slave Diagnostics = Y
Input Data Block from Module to Processor (1219 Words Maximum)
Word Offset
Description
0 to 72
Configuration and status data
73 to 450
Incoming slave 6-byte diagnostics data for 126 slaves (378
words of data for slaves 0 to 125). Refer to Standard
PROFIBUS Slave Diagnostic Bytes (page 241).
451 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 (774 Words Maximum)
Word Offset
Description
0
Set Operating Mode (New)
Bit 15= Handshake (if equal to Input Word 72 Bit 15, then
module has control of word and if not, then module has
processed request)
Bits 8-14= Reserved for future use
Bits 0-7 contain the operation code:
0x40= Stop
0x80= Clear
0xC0= Operate
1
Reserved
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 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.
Without Mailbox Messaging and Without Slave Diagnostics
 Mailbox Messaging = N
 Slave Diagnostics = N