ProSoft Technology MVI56-PDPMV1 - Manual (Page 40)

Start Here MVI56-PDPMV1 ♦ ControlLogix Platform
User Manual PROFIBUS DPV1 Master
Page 40 of 255 ProSoft Technology, Inc.
March 22, 2011
Then, the PDPMV1_C ONNECTION _I NPUT
user-defined data type must have an
array size of 250 words, as shown in the following illustration.
And, the PDPMV1_C
ONNECTION _O UTPUT
user-defined data type must have an
array size of 248 words, as shown in the following illustration.
Note: Each backplane block contains certain registers reserved for general purposes (non-
PROFIBUS data transfer). The backplane input block reserves 8 words for general purposes and
the backplane output block reserves 5 words. You must subtract these reserved words from the
total I/O block size to calculate the actual number of PROFIBUS I/O data per backplane I/O block
and where the break points between data blocks will be in the PROFIBUS data arrays.