
B-63983EN/02 3.I/O LINK
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3.1.2 Numbers of Input Points and of Output Points of the I/O Link
The I/O Link has up to 1024 input points and up to 1024 output points
for each channel when viewed from the master. These I/O points can
be assigned to each slave to periodically pass I/O data between the
master and each slave.
Each slave occupies the predetermined number of I/O points.
The total number of I/O points occupied by all slaves connected to one
channel is up to 1024 points (128 bytes) for each of input and output.
The number of I/O points occupied by one group is up to 256 points
(32 bytes) for each of input and output.
NOTE
The number of occupied I/O points may differ from
the actual number of I/O points. For example, if the
number of input points is smaller than or equal to that
of output points for a group, the number of input
points is assumed equal to that of output points. For
this reason, when the number of input points for the
actually connected hardware components is 128 and
that of output points is 256, the number of occupied
input points is assumed to be 256 because there is
the following relationship between the numbers of
input points and of output points:
128 (number of input points) £ 256 (number of
output points)
For more specific rules, see Section 3.2.