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Chapter 7: Computer Link Function
(2) Participating node management table
The participating node management table contains data related to the nodes currently participating
in the network.
Participating node management table
Node number
Upper layer status
Area 1 of common memory: Data top
address
Area 1 of common memory: Data size
Area 2 of common memory: Data top
address
Area 2 of common memory: Data size
Allowable refresh cycle time
Token monitor time
Minimum separation of frames
7
Link status
- "0x1ff" is the hexadecimal notation for 1FF
- For details about the participation node management table maintained by the JW-50FL, see
page 10-6.
(3) Network management table
The network management table contains information common to the network.
Network management table
Token latch node number
Minimum separation of frames
Allowable refresh cycle time
Measured refresh cycle time (current value)
Measured refresh cycle time (maximum value)
Measured refresh cycle time (minimum value)
- For details about the network management table maintained by the JW-50FL, see page 10-6.
Number
Item
of bytes
1 byte 1 to 254
2 bytes RUN/STOP/ALARM/WARNING/NORMAL
2 bytes Word address (0 to 0x1ff)
2 bytes Size (0 to 0x1ff)
2 bytes Word address (0 to 0x1fff)
2 bytes Size (0 to 0x1fff)
2 bytes In units of 1 msec.
1 byte In units of 1 msec.
1 byte In units of 100 µsec.
1 byte Participate/leave
(HEX)
Item
7-14
Description
.
Number
Description
of bytes
1 byte
Currently token staying node.
1 byte In units of 100 µsec.
2 bytes In units of 1 msec.
2 bytes In units of 1 msec.
2 bytes In units of 1 msec.
2 bytes In units of 1 msec.
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