Omron CS1W-LC001 Operation Manual page 245

How to Use the Node Terminal Block
Connection mode 2) Connecting with the Loop Control Unit at another node PC and
Data link table settings
Data link type
Link start word
Self node leading send word
Number of self node send words
Number of receive offsets from other node
(PC)
Receive offset from other node (PC)
Placement order of send area and receive
area
Description of above settings
System information
(24 words)
Area to send to computer
(512 words)
Area to send to all nodes
(100 words)
Area to receive from all
nodes
Ascending order from #1 in
order of node address
Note 1 In a Controller Link Data Link (user setting), the send and receive areas can be placed
regardless of the node address order. However, when the Node Terminal block of this Loop
Control Unit is to be used, place the send areas at the leading position and then place the
receive areas in order of node address.
Self send data, however, cannot be received over the Controller Link. For this reason, receive the
uppermost 100 words of the Area to send to computer of the node (self node +1) as dummy
words at the receive area corresponding to the self node address as described above so that the
data of all node addresses including the self are placed in the Area to receive from all nodes in
node address order. Note that the data of other nodes cannot be received correctly when the
receive area is not to be placed in node address order.
228
the computer on which CX-Process Monitor is running
Item
Area Send/
Receive
Send
Uppermost 100
words
Receive
Description
Any setting
Leading address (S) of Data Memory for the node
terminals (on CPU Unit)
Leading address (S) of Data Memory for the node
terminals (on CPU Unit)
636 words
100 words x (number of PC nodes)
Note: Of these words, the 100 words of the Area to
receive from all nodes at the self node
address are dummy words and cannot be
used.
Self node + 1 is 436 words.
Otherwise 536 words
Note: The reason for setting the receive offset to
436 words and not 536 words is to allow
reception of the 100 dummy words.
Â
Send area receive area
Node address of receive area: Small number (#1) to
large number (max. #32)
Number of
words
636 Sent to computer on which CX-Process
Monitor is running
Sent to computer on which CX-Process
Monitor is running
The node (self node +1) receives these
100 dummy words at the Area to receive
from all nodes of the self node address.
Other nodes receive these 100 words.
100 words 100 words each are received from the
x number Area to send to all nodes of each node
of receive address.
nodes Note: As self data cannot be received
at the Area to receive from all
nodes of the self node address,
the uppermost 100 words of the
Area to send to computer of the
node (self node -1) are received
as dummy words.
Appendix 2
Description