6-3
Section
Commands and Responses for the Support Board
90
Status (response): The data link status of each mode is returned as shown in
the following diagram. It is the same as the data link read using a libary function.
(Refer to page 75.)
7
6
5
4
3
2
1
0
0
7
6
5
4
3
2
1
0
Byte 1
Byte 2
Byte 3
Bit
Byte 62
Node #1
Node #2
Node #3
Node #62
Data link status for each node
PC status
0: Inactive
1: Active
Communications error (data link reception)
0:Normal
1:Error
PC’s CPU Unit error
0:Normal
1:Error
Data link participation
0:Not in data link or data link inactive
1:In data link
Offset error
0:Normal
1:Error
Error: Offset exceeds number of send words.
Insufficient (short) receive area
0:Sufficient
1:Insufficient
Insufficient: Receive area is smaller than send area.
Excess data is truncated; other data is received.
Remaining receive area
0:Not remaining
1:Remaining
Remaining: Receive area is larger than send area.
Data is received and remaining words are cleared.
Only node addresses 1 to 32 (i.e., 32 bytes) are returned for Wired Units.
Note
1. The length of data returned is different for Wired and Optical Ring Units.
2. The data link status is not refreshed while the data links are inactive.
3. Nodes which are not active in the network or participating in the data links
will generate communications errors.
4. Any node which is not active in the network retains the status that existed
immediately prior to the generation of the communications error.
5. Only the PC operation status and PC error status will be refreshed for nodes
that are not participating in a data link that is active in the network.
6-3-8 CONNECTION CONFIGURATION INFORMATION READ
Reads the node address of Controller Link Units and Boards connected to the
ring in order in the downstream direction. This command is supported only by the
Optical Ring Controller Link Support Units and Boards in Token Ring Mode
(H-PCF or GI cable).
Command Block
04
06
Command
code
Number of nodes to read
First node to read
Response Block
Response
code
Command
code
06
04
Min
Sec
Day Hour Year
Month
Time of connection configuration
Number
of nodes
read
Node address
Node address
One address for each node read
