Cognex In-Sight VC200, Справочное руководство

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Output to PLC - Current Sinking
To configure the output as a sinking output, connect OUTPUT COMMON (for example, C1) to the low voltage reference
(24V COMMON) and connect one of the OUTPUTS on the same terminal row (for example, OUTPUT 4) to the INPUT of
the PLC. When the vision controller output turns ON, the PLC input is pulled down to a low voltage level.
Note :
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OUTPUTS 0 - 7 provide up to 50mA current (maximum).
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There are two output terminal rows. OUTPUTS 0 - 7 share the COMMON 1 connection and OUTPUTS 8 - 15
share the COMMON 2 connection. Therefore the output 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