Omron CS1W-LC001 Operation Manual page 56

Configuration of Instrumentation System
Transferring Data to and from SCADA Software
Read and Writing Block ITEMs Transferred by Receive All Blocks and Send All Blocks
Read and Writing Block ITEMs Note Transferred by Receive All Blocks and Send All Blocks
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The following methods can be used to read and write Loop Control Unit data
with commercially available SCADA software.
Reading Data
The Send All Blocks function block (model 462) is used to transfer specific
ITEMs in Control Blocks, Operation Blocks, and External Controller Blocks to
the specified words in I/O memory in the CPU Unit. SCADA software is then
used to read the data from the I/O memory of the CPU Unit.
Writing Data
SCADA software is used to write data to words in the I/O memory of the CPU
Unit. The Receive All Blocks function block (model 461) is then used to
transfer specific ITEMs in Control Blocks, Operation Blocks, and External
Controller Blocks from the specified words in I/O memory to the Loop Control
Unit.
Reading Data
The Expanded DO Terminal from CPU Unit or Expanded AO Terminal from
CPU Unit function block is used to transfer the specified ITEMs in to specified
words in I/O memory in the CPU Unit. SCADA software is then used to read
the data from the I/O memory of the CPU Unit.
Writing Data
SCADA software is used to write data to words in the I/O memory of the CPU
Unit. The Expanded DI Terminal from CPU Unit or Expanded AI Terminal to
CPU Unit function block is then used to transfer the specified ITEMs from the
specified words in I/O memory to the Loop Control Unit.
Section 1-2