Omron SYSMAC CS Series Operation Manual page 178

Exchanging Data with the CPU Unit
Operation
1,2,3...
146
Loop Controller
Data can be
read/written
to function
block ITEMs.
Function Block data
If timing method 3
(below) is selected,
the CPU Unit data
area read/write
timing can be
synchronized
with an ITEM.
Use the following procedure:
1. Register the CPU Unit I/O memory address that will be read/written from
the Loop Controller in the User Link Table.
2-1.Paste the User Link Table function block, make a software connection for
the analog value just by specifying the tag name. Data can be exchanged
with the CPU Unit's I/O memory area just by making a software connec-
tion to the analog value.
2-2.Use a contact or an analog value in the sequence table.
Data in the CPU Unit's I/O memory area can be used in a condition
expression or action expression just by specifying the tag name in the
sequence table.
A User Link Table registration
Tag CPU
Read/
0%
Unit
name
range
Write
address
TagA D00100 Read 0 3000
TagB D00200 0 500
Write
TagC
When creating block diagrams with the CX-Process Tool, the User Link Table
data can be created and specified automatically within the Loop Controller if a
connection is made by virtually pasting a Field Terminal Block such as DI, DO,
AI, or AO. This method also allows the data exchanged with the CPU Unit to
be managed by tag names.
The following methods
can be specified for
each tag's read/write
timing.
A Always read/write
or
B Read/write when the
CPU Unit's data changes.
or
User Link Table
C Read/write when the
sync input goes ON.
Tag A
Tag B
Tag C
Sequence table
B-1 Software Connection in Block Diagram
User Link Table
Tag A
100%
range
Specify tag name.
B-2 Specifying Tags in a Sequence Table
Rule
Signal
Tag A = 1200
:
NEXT THEN
STEP
ELSE
Specify tag name.
Section 3-3
CPU Unit
I/O memory
Function Block User Link Table
Tag B
00 01 02
STEP 01
Y
02