7
AC30 EtherNet IP Option
Write Mapping
The write process data represents cyclic data sent from the AC30 to
the PLC.
Mapping Arrays
Parameter arrays may be added into the process data, however this
could lead to large amounts of data being passed across the
communications. An alternative is to only reference the element(s) of
the array required. This is possible as each element of a parameter
array has its own parameter number. See the
Appendix A – Array
Parameter Numbers
.
Default Mapping
The process data mapping will contain a factory default mapping. The
default mapping may be overwritten if required.
Cyclic Data Exchange
Cyclic data exchange will occur when a Class 1 connection is
established (active or idle). However, the read process data will only
update the mapped parameters when in the PROCESS ACTIVE state.
On a transition into the PROCESS ACTIVE state all read process
mapped parameters will be updated.
When in the PROCESS ACTIVE state the read process mapped
parameters will all update only when a change in the read process
data occurs.
Содержание AC30 series
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