Sharp JW-20FLT ユーザーズマニュアル
7-14
Chapter 7: Computer Link Function
7
(2) Participating node management table
The participating node management table contains data related to the nodes currently participating
in the network.
in the network.
Participating node management table
- "0x1ff" is the hexadecimal notation for 1FF
(HEX)
.
- 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
- For details about the network management table maintained by the JW-50FL, see page 10-6.
Item
Number
of bytes
Description
Node number
1 byte
1 to 254
Upper layer status
2 bytes RUN/STOP/ALARM/WARNING/NORMAL
Area 1 of common memory: Data top
address
address
2 bytes Word address (0 to 0x1ff)
Area 1 of common memory: Data size
2 bytes Size (0 to 0x1ff)
Area 2 of common memory: Data top
address
address
2 bytes Word address (0 to 0x1fff)
Area 2 of common memory: Data size
2 bytes Size (0 to 0x1fff)
Allowable refresh cycle time
2 bytes In units of 1 msec.
Token monitor time
1 byte
In units of 1 msec.
Minimum separation of frames
1 byte
In units of 100 µsec.
Link status
1 byte
Participate/leave
Item
Number
of bytes
Description
Token latch node number
1 byte
Currently token staying node.
Minimum separation of frames
1 byte
In units of 100 µsec.
Allowable refresh cycle time
2 bytes In units of 1 msec.
Measured refresh cycle time (current value)
2 bytes In units of 1 msec.
Measured refresh cycle time (maximum value)
2 bytes In units of 1 msec.
Measured refresh cycle time (minimum value)
2 bytes In units of 1 msec.