Cognex In-Sight VC200, Справочное руководство

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Wire Inputs and Outputs
The following figures show basic wiring for some of the more common I/O configurations.
Input from PLC - Current Sinking
To configure the input as a sinking input, connect INPUT COMMON (for example, C1) to the high voltage reference
(+24VDC) and connect one of the INPUTS on the same terminal row (for example, INPUT 0) to the OUTPUT of the
photoelectric sensor or PLC. When the PLC output turns ON, the INPUT is pulled down to a low voltage level.
Note :
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There are two input terminal rows. INPUTS 0 - 3 share the COMMON 1 connection and INPUTS 4 - 7 share
the COMMON 2 connection. Therefore the input devices for each terminal row must be the same; either
current sinking or current sourcing.
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To maintain optical isolation of the I/O lines, the devices connected to these lines must not be connected to
the same power supply as the vision controller. If they are connected to, or share a ground with, the same
power supply, they may still function but will no longer be optically isolated.
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Wire Inputs and Outputs