Abstract: A direct-current motor commutator structure includes: a commutator base, comprising a front pressing ring, a pressing plate and a sleeve that are sequentially abutted, a sealing ring being provided between the front pressing ring and the pressing plate, and between the pressing plate and the sleeve constituting a bearing area; a commutator, mounted in the bearing area and having opposite first and second portions; a sealing element being potted or provided between the second portion and the sleeve; an equalizing cable, mounted on an outer side of a first potting area formed by the first portion, the pressing plate and the front pressing ring, abutting against the first portion and the front pressing ring, and covering the first potting area; and an armature coil, clinging to the equalizing cable and located on an outer side of a second potting area formed by the equalizing cable and the front pressing ring.

Abstract: An enhanced user interface for a remote terminal which include a technique of allowing users to define the order in which data is entered, define what particular function keys represent, and to display certain fields in a customize manner.

Abstract: A mode-selectable communications system which commands one or more remote modules from a controller unit. The controller unit issues a command signal having an address and major communications mode command. Each remote module includes a major mode identifier for receiving the command signal from the control unit through a communications link. The major mode identifier identifies an address pertaining to the module and identifies a major communications mode for that module as a command response mode or a time slot mode. The module implements a task indicated by the command mode and selects a time slot response based on the time slot mode. A time slot unique to that module is determined and the module communicates with the control unit through the communications link during that time slot.