Omron SYSMAC 3G8F7-CLK12-E, Руководство по эксплуатации

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6-3 Section Commands and Responses for the Support Board
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First node to read (command): Specify the node to start the configuration from
counting downstream direction (SL2) from the local node. The number is speci-
fied as a 2-digit hexadecimal value between 00 and 3E (decimal 0 to 62).
Number of nodes to read (command and response): In the command, speci-
fy the number of node addresses to return as a 2-digit hexadecimal value be-
tween 00 and 3E (decimal 0 to 62). If 00 is specified, the node addresses of all
nodes downstream from the current node will be returned. The response will re-
turn the number of node addresses actually read as a 2-digit hexadecimal value
between 00 and 3E (decimal 0 to 62).
For this command, the node address of the local node is always returned first
regardless of the setting for the first node to read. The number of other nodes for
which addresses are returned will thus be one less than the specified number of
addresses. The node address of the specified first node will be returned as the
second node address.
Time of connection configuration (response): These parameters show the
seconds, minutes, hour (0 to 23), date, month, and year (the rightmost two digits)
in BCD specifying the time that the connection configuration was last updated.
The information is updated each communications cycle in Token Bus Mode as
long as the ling connection status is normal. The time will be taken from the clock
data in the local node.
Node address (response): Node addresses are returned in order as 1-byte
hexadecimal values starting from the node address of the local node and then
the node address of the node specified as the first node to read.
If the number of nodes to read and the specified first node to read are such that
the local node is included in the reading range, node addresses will be read only
through the node next to and upstream from the local node. The read will end
normally
Example: In the following example, the first node to read is specified as 5 and
the number of nodes to read is specified as 6.
Node
12 Node
15 Node
19
Node
6 Node
32 Node
31
Upstream Downstream
Local node
Specified
first node
to read
Node
11 Node
25
The following response will be returned.
Node address 32
Node address 25 (address of specified first node to read)
Node address 31
19 1F 20
Note 1. If there is a disconnection in the network, but most recently updated informa-
tion will be read.
2. If a node is down, it will be skipped even if the connections are normal.
6-3-9 NETWORK DISCONNECTION INFORMATION READ
Read the Controller Link Board/Unit disconnection information. This command
is supported only by the Optical Ring Controller Link Support Units and Boards in
Token Ring Mode (H-PCF or GI cable).
Parameters
Description