ALFAMATIC Visual Point VP2STEP1 Installation Manual page 5

The RESET input can be connected directly to +24V to leave it always active so that the instrument
is always ready to perform a new cycle.
The START input must be kept active throughout the cycle, otherwise, "test interrupted" is signaled
and the piece is discarded.
The correct zeroing of the encoder takes place using its zero notch and the cylinder reverse signal
(TDC top dead center). Zeroing is performed by the instrument when the top dead center limit switch
is activated and at the same time the encoder zero mark appears. Therefore, for correct zeroing it is
necessary to ensure the presence of the zero notch in the interval in which the limit switch is active.
It is possible to connect a piece presence sensor (ENABLE) which enables the start only when the
relative input is active. To use this signal, it is necessary to activate the relevant option in the
instrument configuration.
By changing the configuration value (see user manual) it is possible to connect an acoustic signaler
instead of the protection descent command which signals each reject piece.
Again, changing the configuration value (see user manual) it is possible to set up a waste bin with a
sensor which, connected to the RESET input, re-enables the machine only when each waste piece is
binned.
There is a SETPOINT output which is activated when the start position is measured or when a pre-
set value is reached (see paragraph 3.6).
The job (or recipe, or program) that the instrument must use can be selected via some inputs: see
chapter 3.7. The selected job changes whenever the status of the selection inputs changes. After the
start signal, the selected job is maintained until the end of the cycle.
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