7
AC30 series General Purpose I/O Option
Port Configuration
Each port can be configured individually as an input or an output. The
following paragraphs describe how to specify the ports’ directions.
The diagram below shows the equivalent circuit for port DIN11 / DOUT11.
The other 3 ports are identical.
Configure a port as output
The user must provide 24V to X20/05, and 0V to X20/06 from an external
power supply.
OUTPUT CONTROL is a signal within the 7004-01-00 that can be
configured by the user, and INPUT is a signal within the 7004-01-00 that
can be monitored by the user.
If OUTPUT CONTROL is ON, switch SW is closed, and X20/01 outputs a
high level (+24V).
If OUTPUT CONTROL is OFF, switch SW is open, and the resistor pulls
X20/01 low (0V).
INPUT always reports the logic level at the user terminal.
Configure a port as input
To select a port as an input, OUTPUT CONTROL must be OFF. Then if
the user applies 24V to X20/01, INPUT reports a high level. If the user
applies 0V, or open circuit to X20/01, INPUT reports a low level.
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