Leroy-Somer digitax st User Manual page 77

Table 12.8 Block Mapping Example
Mapping
parameter
Pr MM.10
Pr MM.11
Pr MM.20
Pr MM.21
This will map parameters Pr 20.21 to Pr 20.26 and Pr 20.28 to Pr 20.31 giving a total of
ten mappings, using only four of the mapping parameters as shown in Figure 12-2.
Figure 12-2 Block Mapping Expansions
Using block mapping this can be extended to a maximum of 32 input and 32 output
mappings when only cyclic data is used. If non-cyclic data is required in addition to
cyclic data, this reduces to 31 words input and output for Mode 1 non-cyclic data and 28
words input and output for Mode 2 non-cyclic data.
Block mapping can also be used when mapping data to the PLC registers in an SM-
Applications. If it is required to map to individual parameters within the same menu
ensure that the target registers are listed in descending order (see section
12.6.1 Avoiding block mapping ).
SM-PROFIBUS-DP User Guide
Issue : a
Mapping value
2021 Map to 2021 as the start for the block mapping.
2026 Map to 2026 as the end for the block mapping.
2028 Map to 2028 as the start for the block mapping.
2031 Map to 2031 as the end for the block mapping.
Input Mappings
(mm.10 - mm.19)
2021
2026
Output Mappings
(mm.20 - mm.29)
2028
2031
www.leroy-somer.com
Description
mappings
expanded
mappings
expanded
2021
2022
2023
2024
2025
2026
2028
2029
2030
2031
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