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FL-net Network Control Appendix D
Note For details on FL-net Unit restrictions, refer to Precautions under 3-1 Before Operation .
Participating Node Management Table
Basic Functions
The status of the nodes in the network is monitored using the participating node management table maintained
by each node. Management data is managed for each node that has joined the network. A summary of the
functions is provided below.
1. When a node is started, a token frame is received, and the participating node management table and net-
work management table are updated.
2. For each token frame received, the node’s participating node management table is updated.
3. When a participation request frame is received for a new node, the participating node management table is
updated.
4. A node will be deleted from the table if the node does not receive a token frame or has consecutively timed
out three times.
Management Data
The token for each node is constantly monitored and the participating node management table is created and
managed, as shown in the following table.
Note (1) “0x1fff” refers to hexadecimal 1FFF.
(2) This information is included in the received token frame.
Minimum allowable frame interval 1 byte Unit: 100
µ
s
Vendor code 10 bytes Vendor code
Manufacturer model 10 bytes Manufacturer model, device name
Node name (equipment name) 10 bytes User-defined node name
Protocol version 1 byte 0x80 (fixed)
FA link status 1 byte Participating, not participating, etc.
Local node status 1 byte Duplicate node number detection, etc.
Item Bytes Contents (data range)
Node number 1 byte 1 to 254
Upper layer status 2 bytes RUN/STOP /ALARM/WARNING/NORMAL
Common Memory Area 1 data first word 2 bytes Word address (0 to 0x1ff)
Common Memory Area 1 data size 2 bytes Size (0 to 0x1ff)
Common Memory Area 2 data first word 2 bytes Word address (0 to 0x1fff)
Common Memory Area 2 data size 2 bytes Size (0 to 0x1fff)
Minimum allowable refresh cycle time 2 bytes Unit: 1 ms
Token monitoring time 1 byte Unit: 1 ms
Minimum allowable frame interval 1 byte Unit: 100
µ
s
Link status 1 byte Participating, not participating, etc.
Item Bytes Contents (data range)