The AGIO is a series of Central-i remote I/O modules. They are used to expand the number of I/O interfaces in the Central-i network. Since all the I/O modules are updated at the master controller every sampling cycle, there is no diﬀerence between connecting, for example, an axis limit sensor to the axis ampliﬁer’s digital input or to a separate AGIO module. The master controller receives the AGIO digital input signal at the same time as the AGA ampliﬁer’s digital input, at 61 micro-second interval. Most of the inputs are conﬁgurable to connect NPN or PNP sensors. And most of the outputs are software conﬁgurable to sink or source current. Typically, each output can sink up to 500mA and source 300mA of current. This is suﬃcient to drive most relays and solenoids directly.