SENA Rhio232 - Manual (Page 23)

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3.5 I/O Port Connection
This section describes how to make a required connection with the digital output, digital input
and ADC input port of the Rhio232 for the users’ devices. The length of cables used for I/O port
connection should be less than 3 meters to ensure normal operation.
3.5.1 Digital Output Port
All digital output ports are equipped with a status LED, which illuminates when a relay point is
set to ON. An electric load can be connected as shown below by using OUTA1 and OUTB1 as
driving switches.
Figure 3-6 Connection of Digital Output Port
3.5.2 Digital Input Port
A digital input system operates regardless of the ± polarity of the voltage and is insulated from
the internal circuits in the system. It can be configured as shown in Figure 3-7 and has a status
LED for each input, which illuminates when input voltage is issued.
Note)
Whilst it may operate in a voltage other than that specified (ON > ±3.2V / OFF < ±1.3V), be
sure to use the specified voltage to ensure the stable operation.
Load