5-3SectionL: Data Link
64
Note Range checks are performed according to the model specified in
“Device Info set.” For C200HX/HG/HE PCs, no error will occur even if
a word address between CIO 236 and CIO 299, which are the outside
the allowable range, is specified. However, when the data link table is
transferred (or written) to the node, an error will occur. Use the Data
Link Table Edit Screen to check the word addresses.
Warnings
Message Meaning Action
Recv area remain
(Area 1/ Area 2)
(see note a)
The number of words in the
receive area is greater than
that in the send area.
Check the number of link
words. If free space is
intentionally left in the receive
area, the data link can be
executed without having to
make any changes.
Recv area short
(Area 1/ Area 2)
(see note b)
The number of words in the
receive area is fewer than
that in the send area.
Check the number of link
words. If only part of data in
the send area is to be
received, the data link can be
executed without having to
make any changes.
Invalid offset
(Area 1/ Area 2) The specified offset is outside
the send area. Check the offset. The data
link can be executed, but no
data can be received.
Source node has
no send data A send area has not been set
for a node from which data
reception has been specified.
Change the reception node or
set a send area for that node.
Source node has
no table A data link table has not been
set at the node from which
data reception has been
specified.
Change the reception node or
set the data link table for that
node.
Note a) Message “Receive area remain” will be displayed when the num-
ber of send words and the receive area are as shown in the follow-
ing illustration.
Data indicated by
Send
area Receive
area
Send
area Receive
area
Data indicated by
Not remaining
is received in node 2. is received in node 2 and the
remaining words are cleared.
Remaining
Node 1 Node 2 Node 1 Node 2
b) Message “Receive area short” will be displayed when the number
of send words and the receive area are as shown in the following
illustration.
Send
area Receive
area
Data indicated by
Send
area
Receive
area
Data indicated by
Sufficient (not short)
is received in node 2.
Insufficient (short)
Data indicated by
cannot be received in node 2.
and the remaining data is truncated.
is received
Node 1 Node 2 Node 1 Node 2
5-3-8 Saving Data Link Tables as a File — S: Save Table