Omron CS1W-FLN22 Operation Manual page 234

FL-net Network Control
Token detection
stopped
3 to 4 4 to 5
Entry token detection time
Node monitor starts
(reset after power turned ON)
Leaving the FL-net
The node number of each node is checked when the token frame is received, and nodes that do not receive the
token frame for three successive passes of the token are removed from the network (including a token-holding
node that does not send the token after the token monitoring time has timed out). When a node is determined
to have been removed from the network, the node information is deleted from the management table.
Managing Node Status
Node status is managed using three types of management tables: Local node management tables, participat-
ing node management tables, and network management tables. A summary of these tables is provided below.
Table
Local node management table
Participating node management table
Network management table
FL-net Local Node Management Table
Basic Functions
The data for setting local nodes is managed using the local node management table, as shown in the following
table.
1. Local node management tables are used to read participation request frames and network parameters.
2. Management data is set from the FL-net upper layer when the node is started.
3. The node name and beginning address and size of the send area in Common Memory can be set from the
CX-FLnet or FL-net Unit Support Software connected to the PLC.
Management Data
Item
Node number
Common Memory Area 1 first word 2 bytes
Common Memory Area 1 data size 2 bytes
Common Memory Area 2 first word 2 bytes
Common Memory Area 2 data size 2 bytes
Upper layer status
Token monitoring time
208
First cycle
N to 1 1 to 2 N to 1
Participation request frame send wait time
(Local node number × 4 ms)
N to 1
Manages the local node settings.
Manages information on the nodes in the network.
Manages information that is shared by all nodes on the network.
Bytes
1 byte 1 to 254
Word address (0 to 0x1ff)
Size (0 to 0x200)
Word address (0 to 0x1fff)
Size (0 to 0x2000) (See note.)
2 bytes RUN/STOP/ALARM/WARNING/NORMAL
1 byte Unit: 1 ms
Second cycle
Third cycle
1 to 2 N to 1 1 to 2
Participation request
frame sent
Details
Contents (data range)
Appendix D
N to 1