Omron CS1W-LC001 Operation Manual page 141

Exchanging Data with CX-Process Monitor/SCADA Software and with Other Nodes Section
3-4-1-1 System information
Role: 0
Role: 1
Role: 2
1. System information
2. Data of Node Terminal block (Area to send to computer, Area to send to
all nodes, Area to receive from all nodes)
System information is information such as the unit address of the Loop
Control Unit and run status. This information is reflected in the 24 words (8
words per Loop Control Unit) from the leading word of the Data Memory (D)
for Node Terminals when the Loop Control Unit starts to be run.
LCU number: 2
System
information
(8 words)
Á
Note The default leading address of the Data Memory (D) for Node Terminals is
D16020 or LCU number 0. Accordingly, the system information is stored to
eight words of D16020 to D16027 as the default addresses when running
of the Loop Control Unit is started. For this reason, when the Loop Control
Unit is used at its defaults, do not use words D16020 to D16027 for other
applications.
Á
When two or more Loop Control Units are used on the same CPU Rack,
the LCU number (ITEM042) for identifying the Loop Control Unit must be
set to different values for each of the Loop Control Units. Also, the leading
address (ITEM043) of the Data Memory (D) for Node Terminals must be
set to the same value for each of the Loop Control Units.
The following table shows the details of system information:
Offset
Data description
address
+0 Unit address
+1 Loop Control Unit run status
+2 CPU Unit run status
+7 Data update check code
+0 Unit address
+1 Loop Control Unit run status
+2 CPU Unit run status
+7 Data update check code
+0 Unit address
+1 Loop Control Unit run status
+2 CPU Unit operation status
+7 Data update check code
LCU number: 1 LCU number: 0
System
information
(8 words)
System
information
(8 words)
address
CPU Unit
Data Memory (D)
Area in I/O memory
Leading address in Data
Memory for Note Terminals →
Data location Default address in
I/O memory for block
Block ITEM
address 000
000 041
007 to 013
000 041
007 to 013
000 041
007 to 013
3-4
8 words
8 words
8 words
D16020
D16021
D16022
D16027
D16028
D16029
D16030
D16035
D16036
D16037
D16038
D16043
123