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Outline
Section
1-1
12
CPU Unit
Data Memory
for Node
Terminals
Loop Control Unit
Node Terminal
block
I/O memory
CX-Process Monitor
Uploading of
data to be
monitored
Manipulation of data
such as changes to
Set Point
At each
operation
cycle
Control block
PID, etc.
Data Exchange with SCADA Software
Commercially available SCADA software can also be used to read and write
function block data for the Loop Control Unit. Words in the I/O memory of the
CPU Unit are allocated for function block data so that Control Block,
Operation Block, and External Controller Block data can be read and written
using CSV tags with SCADA software. Expanded CPU Unit Terminal blocks
can also be used to read and write data using CSV tags for other ITEMs.
CSV tags are created using the CX-Process Tool.
Data Exchange with Loop Control Units at Other Nodes
Loop Control Unit data can be exchanged with Loop Control Units at other
nodes via Controller Link.
The following two methods can be selected.
1) When part of the data link is used (CPU Unit Terminal or Expanded
CPU Unit Terminal block)
CPU Unit
Specified words
Specified words
Words specifed
for Receive All
Blocks
Words specified
for Send All
Blocks
Loop Control Unit
Expansion CPU Unit
Terminals
Send All
Blocks
I/O memory
SCADA software
Set CSV tags
and read
Set CSV tags
and write
Set CSV tags
and write
Set CSV tags
and read
Control Block
ITEMs
Operation
Block ITEMs
External
Controller
Block ITEMs
Each
execution
cycle
Receive All
Blocks