With pulse input, there is an “internal load resistance,” but what does that mean?
This is specified for current pulse input. Resistance values specified depends on the specification of the transmitter (mainly the rated current of the open collector). The internal load resistance are 200 ohm, 500 ohm, and 1 kohm, and power supply supplied from the transmitter is 0.5 W or 2 W depending on its specifications. (The VJP8 is attached externally.