US 2008/0189445 A1 · Numerical controller

Abstract

A numerical controller in which group IDs are automatically allocated to I/O units so that the group IDs and addresses can be set automatically even when a system configuration is changed in response to detection of a configuration error. When a power of the numerical controller is turned on, group IDs are successively allocated to I/O units with distance from the numerical controller, and types of the I/O units are stored. Initial values of the group IDs allocated when the power is turned on for the first time after a system of the numerical controller is constructed, and addresses for the allocated group IDs are stored. An alarm is issued if the types and number of units for the group IDs automatically allocated for the second or later time of starting the numerical controller are different from the initial values.

Claims5

Dependent claims

A numerical controller having a plurality of external-signal input/output units connected thereto, comprising:

group ID allocating means that automatically allocates group IDs to the external-signal input/output units each time when the numerical controller is started;
initial system-configuration information storage means storing initial system-configuration information indicative of correspondence between the group IDs and the external-signal input/output units and;
checking means that checks whether or not correspondence between group IDs automatically allocated by said group ID allocating means when the numerical controller is started and the external-signal input/output units agrees with the correspondence of the initial system-configuration information stored in said initial system-configuration information storage means;
and
means that issues an alarm when a result of the check by said checking means is negative.

2 more elements

A numerical controller having a plurality of external-signal input/output units connected thereto and a signal memory for input/output signals of the external-signal input/output units, said numerical controller comprising:

group ID allocating means that automatically allocates group IDs to the external-signal input/output units each time when the numerical controller is started;
initial system-configuration information storage means that stores initial system-configuration information indicative of correspondence between the group IDs and the external-signal input/output units;
initial address-correspondence information storage means that stores correspondence between the group IDs of the initial system-configuration information and addresses of the signal memory;
enable/disable setting means that sets enable/disable states for the group IDs of the initial system-configuration information;
means that creates group ID correspondence information indicative of correspondence between the group IDs of the initial system-configuration information and group IDs modified according to the enable/disable states set by said enable/disable setting means;
and
means that obtains modified address-correspondence information indicative of correspondence between the modified group IDs and addresses of the signal memory based on the initial address-correspondence information and the group ID correspondence information,
wherein the input/output signals of the external-signal input/output units are controlled according to the modified address-correspondence information.

5 more elements

Dependencies are inferred from the claim text.

Numerical controller

Life of this patent

Numerical controller

Life of this patent

Abstract

Claims5