KEYENCE DL-DN1 - Manual (Page 10)

8 - DeviceNet Compatible Network Unit DL-DN1 User’s Manual (GT2) -
Terms Used in This Document
This document uses the following terms:
Term Description
Sensor A sensor amplifier.
Master unit A DeviceNet master unit.
Slave unit A DeviceNet slave unit.
Main unit A sensor amplifier that has a power line and can operate
alone.
Expansion unit A sensor amplifier that does not have a power line and
must be connected to a main unit.
D-bus The name of KEYENCE's wiring-saving system for sensor
amplifiers.
Supports GT2 Series high-accuracy digital contact
sensors and others.
PGM A mode in which DeviceNet node addresses can be set by
software. Explicit messaging is used for setting the
addresses.