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5-13
5 Operation
CJ-series PROFINET IO Controller Unit Operation Manual for NJ-series CPU Unit (W511)
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Example
The figure below shows the CJ1W-PNT1 IO Controller DTM’s IO Device Area sub item for an exam-
ple network with 4 IO Devices.
By default all Output data is mapped to Output Area 1 and all Input data is mapped to Input Area 1.
Each of these Areas can be mapped to CPU memory independently of each other.
Changing the mapping can be achieved using drag & drop. The module which is mapped to Area 1 and
which must be mapped to Area 2 can be copied by dragging it from the overall module list on top to
Area 2.
Note 1
By default the Auto-Addressing option will be enabled (see the section IO Controller Setup). If
any I/O modules are moved from one area to another, the I/O modules in first Area are re-
mapped to close all the gaps between mappings.
2
Prior to download, the CJ1W-PNT21 IO Controller DTM will check the mappings for possible
Area overlaps, CPU memory overlaps and non-existing EM banks. If an error is detected,
download will be aborted and the necessary correction must be made first.
Precautions for Correct Use
Precautions for Correct Use
When mapping the I/O Areas, make sure that the I/O data will not overlap the Unit’s own internal
memory area or one or more of the I/O data areas of any other CPU or I/O Unit. The CJ1W-
PNT21 IO Controller DTM does not check this. Failure to avoid this will lead to unpredictable
behavior of the Unit, other units, or the CPU Unit.
I/O Mapping Concept
The CJ1W-PNT21 IO Controller Unit provides an I/O mapping concept, based on the I/O module
selection for each slave device. Each selected I/O module can, depending on whether it defines
input and/or output data, be mapped to one of two input and/or output areas. Each of the two input
and output areas can be mapped to any CPU memory area location independent of each other. The
I/O mapping must be setup using the CJ1W-PNT21 IO Controller DTM, as provided with CX-Config-
uratorFDT.
Mapping the I/O modules involves two steps:
1
Allocate each I/O module to one or more of the Input/Output areas.
5-3-5
Mapping I/O Data
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Страница 198: ...Index 1 CJ series PROFIBUS Master Unit Operation Manual for NJ series CPU Unit W509 I Index ...