noun
secondary station
In computing and networking, a station that operates under the control of a primary station, often in a master-slave or polling configuration.
このプロトコルでは、１次局が２次局にポーリングを行う。
In this protocol, the primary station polls the secondary station.
２次局は１次局からのコマンドを待つ。
The secondary station waits for commands from the primary station.
Primary station; the controlling station in a network, as opposed to the secondary station (２次局).
Compound of ２次 (niji, 'secondary') and 局 (kyoku, 'station'). The term is a direct technical translation of the English 'secondary station' used in networking contexts.