Omron PROFINET NX-PNC202, User Manual

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9 Setting Up the PROFINET Coupler Unit
NX-series PROFINET Coupler Unit User’s Manual (W623)
9-6 NX Unit IO
Allocation
9
9-6-1 Basic IO M
apping
9-6 NX Unit IO Allocation
The detail input and output allocation is determined in the Sysmac Studio software. Use the following
information to assign input and output data in the third party IO Controller.
The numbers used to identify NX Units in an IO Device Terminal are called Unit Numbers. These num-
bers are allocated automatically from left to right starting with 1 when the power is turned ON. It is not
necessary for the user to set these numbers. The PROFINET Coupler Unit will have a unit number of 0.
The type and order in which NX Units are mounted will determine the IO allocation and will also affect
the Network Variable address assignments in the PLC. The figure below shows this mapping.
Additional Information
9-6-1 Basic IO Mapping
... ...
I/O
#1
The NX Units’ unit numbers are allocated
automatically in order, from left to right.
I/O
#2
I/O
#3
I/O
#4 ...
I/O
#63
PROFINET
Coupler Unit
E
Connected order
I/O memory
A
B C D
E
PROFINET
Coupler Unit
A B C
D
NX Units
NX I/O data is mapped in the order in which
the NX Units are connected, from low to high.
NX Units with bit allocation are mapped from
the rightmost to leftmost bit, in 2-bit units.
NX Units with word allocations are mapped
from the low to high word address
0
8
15
Order of allocation
Each NX Unit’s I/O data