A programmable controller includes a command execution unit that executes multiple commands in a user program in order; a database storage unit that stores therein a database that holds data used in a process performed by the command execution unit in a table format; a database-query-command generation unit that, when the commands include a command to access the database, converts the access command into a database query command described in a database query language; and a database management unit that accesses the database in the database storage unit and acquires data specified by the database query command.

An information processing apparatus includes a processing portion configured to perform information processing. The processing portion is configured to obtain definition information in which a first mnemonic and a second mnemonic different from the first mnemonic are associated with each other.

An information processing apparatus includes a processing portion configured to perform information processing. The processing portion is configured to obtain definition information in which a first mnemonic and a second mnemonic different from the first mnemonic are associated with each other.

Provided is a ladder program editor capable of appropriately pasting a partial circuit on a ladder program displayed on a screen, based on display elements of the ladder program. The ladder program editor is provided with an editing control unit configured to manage a virtual drawing area formed as a set of a plurality of rectangular areas, a pasting object specifying unit configured to specify a partial circuit as an object of pasting, a reference area specifying unit configured to specify a reference area to serve as a reference for pasting the partial circuit, a pasting method specifying unit configured to specify a pasting position and a pasting method for the partial circuit, a pasting area insertion unit configured to insert a pasting area for pasting the partial circuit into the virtual drawing area, a pasting processing unit configured to paste the partial circuit on the pasting area, and a connecting line adjustment unit configured to adjust connecting lines in the virtual drawing area.

Certain embodiments herein relate to automated display of permissive logic in control systems associated with a power generation unit. A control device may be configured to provide automated updates of system data, such as signals received from power generation equipment, to a human machine interface (HMI) or a supervisory control and data acquisition (SCADA) display, as non-limiting examples. A logic builder block may receive permissive logic configurations, including one or more combinational logic blocks. A logic builder block may be associated with power generation equipment to facilitate the identification of related system data and the subsequent association of the system data to corresponding input pins for the combinational logic blocks. The permissive logic configurations may be compiled into object code and downloaded to the control device, where it may be executed to perform the above described functions, among other functions.