Visual Productions IOCORE, Manual, Page: 8 / 58

Chapter 2
Protocols
The IoCore is fitted with several communication ports and supports various
protocols. This chapter describes these protocols and to which extent they are
implemented in the IoCore
2.1 GPI
The IoCore features eight General Purpose Inputs (GPI) ports that can be con-
nected to external equipment, switches and sensors. State changes on these GPI
ports can be used to trigger programmed events inside the IoCore.
Each GPI port can be switched between ’digital’ and ’analog’. In the digi-
tal mode the signal is held up by an internal pull-up resistor and results in a
logic ’0’. The external equipment is intended to short the port’s pin to the
provided ground pin. This short will create a logic ’1’. All four ports share one
common ground pin.
When set to analog the external equipment is supposed to supply a voltage
between 0V and 10V to the port’s pin. Please refer to figure 2.1 for the pinout
of the GPI connector.
Be careful not to supply more than 10V to the GPI port
as that might cause permanent damage.
Figure 2.1: GPI Pinout
Please refer to page 36 for more information on configuring the GPI ports.
Programming events based on GPI activity is done in the Show Control page,
which is discussed on page 27.
8