Technical data

R911305038 / 01 | Rexroth VCP-Operating Concept Electric Drives and Controls | Bosch Rexroth AG 5-41
Standard Mode
played as scaled or formatted.
Cyclical output variables are used to display actual values and values
that continuously change while a mask is being output.
You specify the cycle time with the polling time. This means that you
know at this stage how often the display of the actual values will be
refreshed.
The scaling and formatting of cyclical output variables, in particular of
decimal numbers as floating point numbers, requires a corresponding
computing time, and as a result the data is not output in real time.
The more cyclical data is transferred, the longer the reaction time to
new values from the controller.
5.5.15.2 Formatted Output
You can format a numeric variable value to suit an output area.
Formatting consists of:
– Field Length
– Fractional Digits
– Positive Values Only
– Display Leading Zeros
The field length determines the entire length of the output value, includ-
ing signs, decimal points, and fractional digits.
The number of fractional digits gives the operator the impression that a
value has been divided, however, in reality no value has been divided.
However, the variable value must exist in the controller in a corre-
spondingly high resolution.
Example: In the controller, the value of a length is stored as a word.The range of
values is between 0 and 65535. The following settings are made for
display:
– Decimal number
– Output
– Only positive
– Field length = 6 (5 + decimal point)
– Fractional digits = 2 (absolute)
To improve the performance of transfer to the controller, use data types
identically and ensure that the address ranges of a mask are as contin-
uous as possible.
For these applications, select cycle times > 500 ms.