Dr 7 - Definition Of The Digital Inputs 1, 2, 3, 4, 5, 6, 7 - Siemens SIWAREX FTA Device Manual

5.6.23 DR 7 - Definition of the Digital Inputs 1, 2, 3, 4, 5, 6, 7

The definition of the digital inputs can be defined with this parameter. This can be
done by assigning a command or a step-on condition.
Commands:
If the signal 1 appears at the defined input then the assigned command is
executed. To assign a command to an input, its command number (1 to 256) must
be entered (see Command list). By entering 0, the input is assigned as unused.
Step-on condition
The step-on condition allows you to influence the weighing procedure through the
control program of the SIMATIC (see chapter 8.4.8).
Entering the value 255 defines the input for the step-on conditions. In the second
step, you must define which step-on condition that the input is responsible for. This
is done by defining scale parameter 2 (see DR 23 –
5.6.24 DR 7 - Level definitions for digital inputs 1 to 7
After assigning the definition for digital inputs to a command or a step-on condition,
you can define which signal that the should be interpreted as active on the input.
E.g. Digital input 1 (DI1) is determined with bit 0:
If bit 0 is 0 then DI1 is high active and if bit 0 is 1 then DI1 is low active,
If bit 1 is 0 then DI2 is high active and if bit 1 is 1 then DI2 is low active,
etc.
5.6.25 DR 7 - Measurement time Pulse input
The measurement time can be defined between 1000 and 10000 Milliseconds for
the counter input. Pulses are counted using the defined time intervals and are
output as process values.
5.6.26 DR 7 - MMC Log Overflow, MMC Trace Overflow, Target storage for trace function
Bit 0 is used for defining how the logging should be performed in the calibratable
MMC memory when the memory is full.
0: with full memory, the logging procedures are stopped
1: with full memory, the oldest entries are overwritten
Bit 1 is used for defining how the logging of trace data should continue if memory is
full.
0: No overwriting of trace data is possible when MMC memory is full.
1: The oldest trace data is overwritten when MMC memory is full
The trace function is described in
SIWAREX FTA
Step control ).
5.6.29
Weighing Functions
5-85