How to Use the Node Terminal Block
Appendix 2
229
Note 2
In addition to connection mode 2) above, the CPU Unit Terminal block or Expanded CPU Unit
Terminal block can be used to read and write the Data Link area after building a regular
Controller Link Data Link as a method of connecting the Loop Control Unit to another node PC.
However, the Data Link in connection mode 1) above is required for monitoring the Loop Control
Unit on CX-Process Monitor.
Example of Connection mode 2)
Two PCs and one computer are connected by Controller Link Data
Link
Node: 32, Link start word: P
Node
Send/
Receive
Leading
word of self
node
Number
of words
Offset
01
Receive
P
636 words
0 word
32
Send OFF
02
Receive
P+636 words
636 words
0 word
Node: 01, Link start word: S
Node
Send/
Receive
Leading
word of
self
node
Number
of words
Offset
01
Send
S
636 words
02
Receive
S+636
200 words
436 words
32
Receive
OFF
Node: 02, Link start word: T
Node
Send/
Receive
Leading
word of
self
node
Number
of words
Offset
01
Receive
T+636
100 words
536 words
02
Send
T
636 words
32
Receive
OFF
Loop Control Unit
Controller Link unit
Loop Control Unit
Controller Link unit
Computer on which
CX-Process Monitor is
running
Controller Link
Support Board
Controller Link network
Leading address S+536
→
Leading address S+636
→
Leading address S
→
Data Memory (D) for
Node Terminal
System
information
#1
For LCU number
0
For LCU number
1
For LCU number
2
8 words
Area to send to computer
#1
512 words
(16 words x 32
blocks)
Area to send to all nodes
#1
100 words
(2 words x 50
blocks)
Area (dummy area) to
receive from all nodes #1
100 words
(2 words x 50
blocks)
24
words
Leading address S+24
→
System
information
#1
For LCU number
0
For LCU number
1
For LCU number
2
Area to send to computer
#1
Area to send to all nodes
#1
Receive from Area to
receive from all nodes #2
PC#1
Data Memory (D) for
Node Terminal
PC#2
Computer #32
Area to send to all nodes
#2
Leading address T+24
→
Leading address
T+536
→
Leading address
T+636
→
System
information
#2
For LCU number
0
For LCU number
1
For LCU number
2
Area to send to computer
#2
Area (dummy area) to
receive from all nodes #2
Dummy send area #1
received by this area
Leading address
T+436
→
Leading address
P
→
P+536
→
Leading address S+436
→
System
information
(not used)
For LCU number
0
For LCU number
1
For LCU number
2
Area to send to computer
#2
Area to send to all nodes
#2
P+636
→
8 words
8 words
Leading address T
→