Hitachi FL.NET, Руководство пользователя

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8 APPENDIXES
8-29
8.4.3 Node status management
As outlined in Table 8-8, node status management is exercised with the self-node management table,
entering node management table, and network management table.
Table 8-8 Node Status Management Table Overview
Name Description
Self-node management table Manages the self-node settings.
Entering node management table Manages the information about nodes that have
entered in the network.
Network management table Manages the common information about the
entire network.
8.4.4 FL-net self-node management table
(1) Basic features
This table manages the data about self-node settings as summarized below:
• Used to read enter request frames and network parameters.
• Management data is set by a higher FL-net layer at the time of node startup.
• The node name and the transmission area starting address and size of common memory can be
set from the network.
(2) Management data
Table 8-9 Self-node Management Table
Item Length Description
Node number 1 byte 1 to 254
Area 1 data starting address for common memory 2 bytes Word address (0 to 0x1FF)
Area 1 data size for common memory 2 bytes Size (0 to 0x1FF)
Area 2 data starting address for common memory 2 bytes Word address (0 to 0x1FFF)
Area 2 data size for common memory 2 bytes Size (0 to 0x1FFF)
Higher layer status 2 bytes RUN/STOP/ALARM/WARNING/NORMAL
Token surveillance timeout 1 byte Variable in 1 ms units
Minimum frame interval 1 byte Variable in 100
µ
s units
Vendor name 10 bytes Name of the vendor
Maker form 10 bytes Maker form/device name
Node name (equipment name) 10 bytes User-defined node name
Protocol version 1 byte Fixed at 0x80
FA link status 1 byte Entering/leaving, etc.
Self-node status 1 byte Node number duplication detection, etc.