Abstract: A module (10-1 to 10-n) for a liquid chromatograph that is incorporated in a liquid chromatograph (1) and performs information communication with a controller (20) of the liquid chromatograph (1). The module (10-1 to 10-n) includes an assignment requesting part (MF1) configured to transmit, when the module is an unassigned module (10-n) that is a module to which an identifier for communication with the controller (20) is not assigned, an assignment request for the identifier for automatically assigning the identifier to the controller (20) only when request permission is given.

Abstract: Provided is a unit-type analyzer (1) including: a system controller (80); a plurality of analyzing units (60), with each analyzing unit including a main power switch (70) configured to turn on and off electric power to the analyzing unit, and a software switch (66) provided separately from the main power switch configured to turn on and off a communication with the system controller; and a software-switch operation-mode setter (65) configured to perform a setting for enabling or disabling an operation on the software switch included in each analyzing unit.