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Normally, Field Terminals are used for data exchange with I/O Units
and the HMI function is used for data exchange with I/O memory for
CPU Units. With these functions, however, the I/O memory
addresses for the CPU Unit are automatically allocated. User link
tables are useful for reading and writing data in the Loop Controller
to user-set memory area addresses in the CPU Unit. For example,
to read the remote set point (RSP) data from the DM Area in the
CPU Unit's I/O memory, allocate addresses in the DM Area to a
user link table and connect the table to the RSP of the PID Block. In
the following figure, D100 is allocated to a user link table, and the
table is connected to the RSP of the Basic PID Block.
User link tables are used to ex-
change data between user-set I/O
memory in the CPU Unit and func-
tion blocks in the Loop Controller.
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User Link Tables
Useful Functions
Содержание CX-Process Tool
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