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How to Use the Node Terminal Block
Appendix 2
218
There are two modes of exchanging data between the host computer and Loop Control Unit.
Method
On-demand reading mode
Data link mode
Description
Host computer on which CX-Process
Monitor is running reads the Area to send to
computer whenever required.
Host computer on which CX-Process
Monitor is running uses the Data Link
to read the Area to send to computer
at all times.
Connection
method
Host Link, Ethernet, Controller Link, etc.
Loop Control Unit
Host Link
Host com puter on which CX-
Process Monitor is running
Term inal to com puter send term inal
Controller Link data link used.
Basic procedure
Host computer used
Step 2. Wiring in software of function blocks to
be monitored at Terminal to Computer Send
block (source designation).
Step 1. Initial setting to System Common blocks
Step 3. Setting of monitor tag using CX-Process
Tool
Step 3. Accessing (data collection) of Area to
send to computer from host computer
Step 4. Accessing (data collection) of Area to
send to computer by specifying the preset tag
name from CX-Process Monitor
CX-Process Monitor
used
2.
To write data to the Loop Control Unit from the host computer
The host computer writes data on the following Terminal Setting from Computer blocks on the
Loop Control Unit using the FINS WRITE ITEM commands issued to the Loop Control Unit.
Function blocks used: DO Terminal Settings from Computer (Block Model 409)
AO Terminal Settings from Computer (Block Model 410)
The Loop Control Unit can use the Terminal Setting from Computer blocks to use the contact
or analog data that is written from the computer.