Cyclic Transmission - Omron CS1W-FLN22 Operation Manual

Cyclic Transmission

Participating Node
Management Table
Node number
Upper layer status
Common Memory Area 1 data first word
Common Memory Area 1 data size
Common Memory Area 2 data first word
Common Memory Area 2 data size
Minimum allowable refresh cycle time
Token monitoring time
Minimum allowable frame interval
Link status
Network Management
Table
Token holding node number
Minimum allowable frame interval
Allowable refresh cycle time
Refresh cycle measurement value
(current)
Refresh cycle measurement value
(maximum)
Refresh cycle measurement value
(minimum)
2-2 Cyclic Transmission
Token
Node 1
Node 1
Node 2
Node 3
Node 4
Node...
Node n
20
The participating node management table manages information on the nodes
in the network.
Item
Note "0x0012ab" refers to hexadecimal 0012AB.
The network management table manages information that is shared by all
nodes on the network.
Item
Cyclic transmission is used to transmit cyclic data. The data is shared by each
node through the Common Memory (shared memory) function.
Data
FL-net
Node 2 Node 3
Node 1 Node 1
Node 2 Node 2
Node 3 Node 3
Node 4 Node 4
Node... Node...
Node n Node n
Note Cyclic transmission allows PLCs made by OMRON to communicate with
PLCs made by other companies.
Bytes Contents (data range)
1 byte 1 to 254
2 bytes RUN/STOP /ALARM/WARNING/NOR-
MAL
2 bytes Word address (0 to 0x1ff)
2 bytes Size (0 to 0x200)
2 bytes Word address (0 to 0x1fff)
2 bytes Size (0 to 0x2000)
2 bytes Unit: 1 ms
1 byte Unit: 1 ms
1 byte Unit: 100 ms
1 byte Participating, not participating, etc.
Bytes Contents (data range)
1 byte Node currently holding the token
Unit: 100 µs
1 byte
2 bytes Unit: 1 ms
2 bytes Unit: 1 ms
2 bytes Unit: 1 ms
2 bytes Unit: 1 ms
Node...
Node 1 Node 1
Node 2 Node 2
Node 3 Node 3
Node 4 Node 4
Node... Node...
Node n Node n
Section 2-2
Node n
Common
Memory