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Terminal Block LEDs
Each terminal pin has a corresponding LED. To use the LED indicators, the LED GROUND terminal must be connected
to the ground (current sink) associated with the INPUT or OUTPUT lines. Each LED will light when 5VDC - 24VDC is
present on the associated terminal pin.
CAUTION
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If connecting the LED GROUND terminal, the OUTPUT COMMON pin(s) must be configured to source
current (i.e., connected to +VDC) and the INPUT COMMON pin(s) must be configured to sink current (i.e.,
connected to -VDC).
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If any OUTPUT COMMON pin is connected to -VDC or any INPUT COMMON pin is tied to +VDC, the LED
GROUND terminal should not be connected. Connecting the LED GROUND in these situations could lead
to unexpected behavior on the INPUT and OUTPUT lines.
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Specifications