Answer / asad

Sourcing mean we are giving +ve from the field and -ve is common through PLC and sinking mean we are giving -ve from the field and +ve is common through PLC

Answer / madhuridalvi

When supply is is given to the bulb or any device through
the switch button (toggle switch), at that time switch is
the sourcing and the bulb is the sinking.
In PLC input card is sinking and output card is sourcing

Answer / nani

sinking means 0 volts to common
sourcing means 24 volts to common

Answer / nani babu

sinking means 0 volts to relay common
sorcing means 24 volts to relay common

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