Output to PLC - Current Sinking
To configure the output as a sinking output, connect OUTPUT COMMON (for example, OUTPUT COMMON 2) to the low
voltage reference (24V COMMON) and connect one of the OUTPUTS (for example, OUTPUT 4) to the INPUT of the
photoelectric sensor or PLC. When the output turns ON, the PLC input is pulled down to a low voltage level.
Note
:
l
OUTPUTS 0 - 7 provide up to 50mA current (maximum). These outputs are typically connected (directly or
indirectly) to an input, such as a trigger input or PLC input.
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There are four sets of outputs: OUTPUTS 0 - 3 share the OUTPUT COMMON 1 connection; OUTPUTS 4 - 7
share the OUTPUT COMMON 2 connection; OUTPUTS 8 - 11 share the OUTPUT COMMON 3 connection;
and OUTPUTS 12 - 15 share the OUTPUT COMMON 4 connection. Therefore the output devices for each
set of outputs must be the same; either current sinking or current sourcing.
l
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 PC. 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.
29
Wire Inputs and Outputs
