Aviom 6416i - Manual (Page 68)

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Virtual Data Cables
Three types of Virtual Data Cable (VDC) ports are available on the rear panel
of the 6416i Input Module. Fourteen VDC Slots are available system‑wide,
regardless of the current network mode (Auto or Manual). Virtual Data Cables
are not affected by the network sample rate, channel activation settings, or
gain settings.
When a module requests to activate a Virtual Data Cable, the Control Master
checks the entire network to ensure that the requested VDC is available.
Depending on the type of VDC requested, one or more VDC Slots must be
available before the request can be granted.
When a VDC Slot has a valid input assignment, the Control Master broadcasts
this information to the entire network. Each module in the network will
display the In Use LED for any valid Virtual Data Cable input.
See the VDC info (page 33) for help configuring and using the fourteen
available Virtual Data Cables.
GPIO
GPIO (General Purpose Input/Output) can be used to send contact closure
or voltage‑type control signals through the network. Four input and four
output blocks are provided. Each terminal block can be individually wired.
GPIO inputs can be individually configured to be either Isolated or TTL.
GPIO Configuration DIP Switches
Each of the four GPIO Input blocks can be set to either Isolated or TTL
operation using the configuration switches to the left of the terminal blocks.
The Isolated/TTL configuration switches only apply to the GPIO inputs.
With the switch in the down position, the input is set to TTL. Use this setting
for voltage‑type signals. GPIO inputs set for TTL operation can handle signal
voltages up to 5 Volts.
The up position (Isolated) sets the input to accept on/off switch signals. Do
not use the Isolated setting with voltage-based signals.