ProSoft Technology MVI56-PDPMV1 - Manual (Page 231)

MVI56-PDPMV1 ♦ ControlLogix Platform Reference
PROFIBUS DPV1 Master User Manual
ProSoft Technology, Inc. Page 231 of 255
March 22, 2011
Normal Backplane Operation
The MVI56-PDPMV1 module’s application code initiates the data transfers at the
end of every ControlLogix PLC ladder scan. As such, the MVI56-PDPMV1
module is able to actively read and write the PROFIBUS Cyclic Input/Output data
blocks in the appropriate locations.
Input Data Block (Block ID = 1 to 4)
This block contains the previous input data received from the slaves.
Input Data Block Format (Input Image) (Local:1:I.Data Controller Tag)
You can find the contents of the Input Data Block (Input Image) in the
Local:1:I.Data user controller tags in RSLogix.
Word Offset
Start End Name Description
0 199 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.
Block ID 1 = Slave bytes 0 to 399
Block ID 2 = Slave bytes 400 to 799
Block ID 3 = Slave bytes 800 to 1199
Block ID 4 = Slave bytes 1200 to 1535
200 200 Last out mailbox
message ID processed
from output image The module confirms the receipt of a mailbox by copying its ID
code (Message ID) to this register.
201 201 Current in mailbox
control index Incremented after the module has transferred a new mailbox
response to the processor.
202 202 Current alarm control
index Incremented after the module has transferred a new alarm to
the processor.
203 203 Reserved for future use
204 205 PROFIBUS CRC32
value CRC32 checksum for PROFIBUS Master configuration
downloaded from configuration utility
206 207 Module CRC32 value MVI56-PDPMV1 module configuration checksum for module
configuration downloaded from configuration utility
208 247 Reserved for future use
248 248 Write Block ID Write block ID of Output image to receive (1 to 4 for data, 0 or -1
if no data)
249 249 Read Block ID Read Block ID number -1 to 4
Input Block Status Data Details (Block ID = 0 to -1)
The MVI56-PDPMV1 module periodically transfers a status block to the
ControlLogix containing relevant information about the module operation (Block
IDs 0 to -1).
The types of data returned in the PROFIBUS Input Status area include: