Technical data

SINAUT TD7 software package for the CPU
2.5 Data point typicals
Software
System Manual, 07/2009, C79000-G8976-C222-07
269
Name: ContinuousEnterFunct
Declaration: INPUT
Data type BOOL
Default: FALSE
Explanation Continuous change checking.
Range of
values:
TRUE or FALSE
No parameter specified: Default value FALSE is valid.
With this parameter, you can decide whether the parameter values at
ParameterInput should be continuously read in and changes checked. The
change evaluation is made by comparing the current with the last values that
were sent. Only changed values are sent. If more than one change is
detected, the block sends the data area in which all changed parameter
values are located.
A new transmission of the parameter values can be triggered over the
RetransmitAll input (see below) even when the parameter entries have not
changed.
This method of transmission triggering is suitable when the parameter
values are entered in the ParameterInput area by software, but can also be
used for entering the parameters from an operator panel (OP) when the OP
has no separate function key with which to trigger transmission. For more
detailed information and related parameters, refer to the section Function.
If you do not require the parameter, simply leave it open. The default value
FALSE then applies; in other words, the parameter values at ParameterInput
are not read continuously and evaluated for changes.
Data checks:
• The parameters read in are only transmitted if no error is detected during
the 1-out-of-n check. While for "hardware" input (see EnterInput) an
empty cycle must be detected before new parameter values can be sent
from the block, for "software" input new parameter values can be
transmitted in every OB1 cycle. This assumes that there is no other
"software" entry at another block in this cycle. Otherwise a 1-out-of-n
error is detected.
• When a 1-out-of-n error is detected at the "software" input, the entered
parameters are no longer processed. New parameters are read in again
only when no "software" input has been acquired in the PLC for one OB1
cycle; in other words, not only for this block but also for all other
command, setpoint and parameter blocks with "software" input. The FB
enters the detected 1-out-of-n error in the diagnostic buffer (event ID
B172).