Beckhoff EL1258, Документация

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Commissioning
EL125x, EL2258 291 Version: 2.5
Fig. 175: CoE object 0x8000 (MTI settings ch.1): Settings for the sample program
To change settings, select the terminal in the Solution Explorer and select the "CoE - online" tab.
Explanatory notes on the sample program
A TwinCAT 3 visualization is used to illustrate the evaluation of binary input signals. Only the basic
functionality is described. To this end,
Visualization_1 merely represents a timestamp difference of two
events at the input of channel 1 of the EL1258 (input bit 0 → 1 → 0):
Fig. 176: Sample program EL1258 / Visualization_1: simple time measurement based on two state changes
A digital output terminal, whose output is directly connected to input channel 1 of the EL1258, switches the
output with "SET OUTPUT". The user presses the button for any length of time; the elapsed time is shown in
the upper bar-graph display, while the lower bar-graph display shows a time span determined by the
timestamps of the EL1258.
Like Visualization_2 , this is used for continuous output of a bit pattern or a pseudo-random sequence. All
variations are possible here, with the intention to illustrate the behavior of the EL1258, including a
reconstruction of the bit pattern using the time stamps of the received events (right side):
Fig. 177: Sample program EL1258 / Visualization_2: Display of incoming events in chronological order
according to the timestamps of the EL1258
Using the bit pattern defined in the POU "PulseOutputs" (left side):