Siemens SIMATIC PCS 7 Function Manual page 7

I/Os of ...
The I/Os represent the data interface of the block. Via these I/Os, you can transfer data to
the block and fetch results from it.
Table 1-1 I/Os of ...
I/O Meaning
(parameter)
SP_VAL Setpoint
(input)
The "I/Os" table lists all the input and output parameters of the block type that the user can
access with configuration tools. They are sorted alphabetically. I/Os that can only be
accessed by the algorithm of the block, so-called internal variables, are not listed. The
columns have the following meaning:
● I/O
● Meaning
● Type
● Default
● Type
Table 1-2 Block algorithm
Abbreviati Type
on
I Input
Value supply of the block (representation in the CFC: left side of block)
O Output
Output value. (representation in the CFC: right side of the block)
IO Input / output
Reacting input that can be written by the OS and written back by the block (representation in the CFC: left side
of block)
SIMATIC BATCH Interface Blocks V7.1
Function Manual, 03/2009, A5E02171101-01
Type Default
DInt 0
Name of the parameter derived from the English name.
Example: PV_IN = Process Variable INput (process variable, control variable). As far as
permitted by SIMATIC conventions, the same names were used.
Function (sometimes abbreviation)
S7 data type of the parameter (e.g. BOOL, REAL)
The value of the parameter before the block is run for the first time, unless this was
changed during configuration
Type of access of the block algorithm on the parameter; differentiates between inputs,
reacting inputs and outputs (refer to table below).
Overview of the Block Description
Type Attr.
I
OCM Permitted
values
+
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