Meters with no integrated data logger will have a connector, or output, for external devices like data loggers to be attached. The output will give the external device access to the pulses the meter is counting consumption in, hence it being a pulsed output. Once connected the data logger will be able to count the pulses the meter is creating.
When something is already connected to the meter, a third party logger for example, then you can tell us there’s no spare pulsed output available. This is fine, we’ll follow the meter owner’s instructions on installing a pulse splitter.