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PROFIBUS-DP Master DTM
Section 3-3
Collective List Box The collective list contains the following information (refer to figure above, the
table applies to the lists in both Allocation tabs).
I/O Mapping Areas Each Output/Input Allocation tab also contains two areas on to which the I/O
data can be mapped. The areas will in turn be mapped to the PLC Memory.
By default all data is mapped to Area 1. The sequence of mapping is deter-
mined by slave station address, i.e. the I/O data of the lowest slave address is
mapped first.
Note When mapping, the modules are copied from the collective list to the mapping
Area and not moved. This means that the collective list will always be popu-
lated. The collective list acts as a resource for the Mapping Areas, below the
collective list.
Mapping Area Controls Each mapping Area in the Allocation tab is equipped with four controls and an
information field located below the Area. The controls and information field
are listed and explained in the table below.
Column Description
#Addr. Station address on the network, obtained from the slave DTM.
Index Index number of the I/O module.
Device Device name, obtained from DTM.
Module System generated name.
Size Module data size, unit of type mentioned in next column.
Type Module data type, e.g. Byte, Word etc.
Addr Mapped address area in PLC memory. For CIO area: CIOyyy (e.g.
CIO3200). For DM area: Dyyyy (e.g. D03500)
Control Description
Area box Selects the PLC Memory Area to which the associated
I/O Area will be mapped. Possible options are:
• Not Used (List must be empty).
•CIO
•DM
•Work
•HR
• EM Bank 0 though 0 to 12 (Dec.)
(See Note 1)
Start Address box In this field the user can enter the start address of the
mapped data block within the selected PLC Memory
Area.
Length box The length box allows the user to select the number of
visible rows. The minimum default value is 100 words. It
can be set to up to 7168 words.
Occupied: field This field display the actual length of the data block (not
necessarily the same as the amount of data in it). This
length includes both data and any gaps between mod-
ules. Gaps may only be there if Auto-Addressing option
in the Master Setup tab is disabled.
See also Note 2.
Compress button Pressing the Compress button will compress the Area
list associated with it, i.e. this action will remove all gaps
from the mapping list and move any higher address all
list.
(See Note 3.)
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