Sharp JW-20FLT ユーザーズマニュアル

15-26

Chapter 15: Appendix

The status control of nodes consists of a local node management table, a participating nodes manage-
ment table, and a network management table. An outline of each is shown below.

Control data relating to this node. An outline is shown below.

 Used for reading participating request frames and network parameters.
 The control data are set by the FL-net upper layer when this node starts.
 The node name, top address and size of the data send area in the common memory can be set

through the network.

Node number

1 byte

1 to 254

Area 1 of common memory: Data top 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

2 bytes Word address (0 to 0x1fff)

Area 2 of common memory: Data size

2 bytes Size (0 to 0x1fff)

Upper layer status

2 bytes RUN/STOP/ALARM/WARNING/NORMAL

Token monitor time

1 byte

In units of 1 msec.

Minimum separation of frames

1 byte

In units of 100 µsec.

Vendor name

10 bytes Vender name

Manufacturer name

10 bytes Manufacture model name, device name

Node name (facility name)

10 bytes Node name by user entry

Protocol version

1 byte

Fixed to 0x80

FA link status

1 byte

Participate/leave

Local node's status

1 byte

Doubled node number detection, etc.

Local node management table

Control its own node settings.

Participating nodes management table Control information about nodes participating the network.

Network management table

Control information shared throughout the network.