Detailed Description
2.12 Block descriptions
PLC Basic Program Solution Line (P3 sl)
2-100 Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Variable addressing
For some NC variables, it is necessary to select area no. and/or line or column in the NC
VAR selector. A basic type can be selected for these variables,
i.e., area/column/line are preset to "0".
The contents of the area number, line and column specified by the NC VAR selector are
checked for a "0" in the FB. If a "0" is present, the value is transferred to the input parameter.
The user must supply the required parameters (UnitX/ColumnX/LineX) before calling
FB PUT.
Here unit corresponds to the area number.
Machine data, GUD
In order to define machine data and GUDs without a password, the protection levels of the
data you want to access must be redefined to the lowest level. The procedure is described in
the Installation Guide (in the Section describing the protection level concept) and in the
Programming Guide Advanced (protection levels for user data).
Notice
FB 3 can only write NC variables if basic program parameter NCKomm has been set to "1"
(in OB100: FB 1, DB 7). The call is permitted only in cyclic program OB1.
When channel-specific variables are written, only variables from one and the same channel
may be addressed via Addr1 to Addr8 in one job. In areas V and H, different logic axis
numbers must not be assigned in a single job. (Failure to observe this rule results in Error:=
TRUE, State:= W#16#02).
NCK variables can be combined in a group in a single job: NCK variables can be combined
in one group in a single job:
Area
Group 1 C[1] N B Q T
Group 2 C[2] N B Q T
Group 3 V[.] H[.]
The same rules apply to channels 3 to 10 as illustrated as examples in the above table in
groups 1 and 2.
Note
Especially when reading several long strings, the number of usable variables can be less
than 8.
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