How to Use the Node Terminal Block
Appendix 2
219
Note
The Loop Control Unit can also re-issue the data written from the computer to the Controller Link
network. When data is re-issued, the Loop Control Unit internally writes the data to the Area to
send to all nodes in Data Memory (on CPU Unit) for the Node Terminals, and sends the data to
the Loop Control Unit at another node PC by the Controller Link Data Link.
CPU Unit
Loop Control Unit
Terminal Setting
from Computer
block
Data Memory (D)
for Node Terminal
not used
Computer on which CX-
Process Monitor is
running
Write data using FINS
command
Read at each
operation cycle
At this time, the computer and Loop Control Unit can be connected via either the host link or
the network as long as FINS commands can be issued to the Loop Control Unit from the
computer.
Basic procedure
Step 1. Wiring in software (source designation) of
Terminal Setting from Computer block to function
block to be written
Step 2. Issue of FINS command (write command
to Terminal Setting from Computer block) to Loop
Control Unit from host computer
3.
To send and receive data between node terminals and the Loop Control Unit at
another node PC on the Controller Link network
The Loop Control Unit uses the following Send Terminal to All Nodes or Receive Terminal
from All Nodes blocks to send data to the Area to send to all nodes of the Data Memory (on
CPU Unit) for the Node Terminals or to receive data from Area to receive from all nodes.
Note, however, that a Data Link (user setting) must already be established by the Controller
Link between PCs on which the Loop Control Unit is mounted.
During data transmission: DO Terminal to All Nodes (Block Model 407)
AO Terminal to All Nodes (Block Model 408)
The other node PC receives the data by the Controller Link Data Link. The Loop Control
Unit at the other node PC uses DI Terminal from All Nodes (Block Model 414) and AI
Terminal from All Nodes (Block Model 415) to read data from the Area to receive from all
nodes (on CPU Unit).
