Omron CS1W-LC001 Operation Manual page 33

Outline
2) Internal processing
The PC on which the Loop Control Unit is mounted is linked via the regular
Controller Link Data Link with the PC at the other node. On this link, the Loop
Control Unit reads and writes analog signals or contact signals on part of the
Data Link Area on the CPU Unit by the CPU Unit Terminal or Expanded CPU
Unit Terminal block.
Loop Control Unit at
other node
Controller Link
Data Link
Analog data or
contact data
2) When Data Link Area 1 or 2 are occupied (Node Terminal block used)
The PC on which the Loop Control Unit is mounted occupies Data Link Area
1 or 2 for Loop Control Unit use, and is linked via the Controller Link Data
Link with the PC at the other node. Data Memory (D) for the Node Terminals
of the CPU Unit is allocated to Data Link Area. On this link, the Loop Control
Unit can exchange data with the other Loop Control Unit at the other node
PC by reading and writing Data Memory (D) for the Node Terminals of that
CPU Unit by the Node Terminal block.
Loop Control Unit at
other node
Controller Link
Data Link is
occupied.
Analog data or
contact data
 Prepare a data sheet for the function blocks shown below on CX-Process
Tool, and store the data sheet on the Loop Control Unit. The function block
data sheet describes: (a) software wiring of each function block and (b)
parameters in each function block.
Loop Control Unit
CPU Unit
CPU Unit Terminal or
I/O memory
Expanded CPU Unit
Term inal block
At each
operation
cycle
Data Memory
for Node
At each
Terminals
operation
cycle
Loop Control Unit
CPU Unit
I/O memory
Node Terminal block
At each
operation
cycle
Data Memory
At each
for Node
operation
Terminals
cycle
Section 1-1
13