Abstract: A semiconductor device having excellent electrical characteristics is provided. The semiconductor device includes a first conductive layer, a first insulating layer over the first conductive layer, an oxide semiconductor layer over the first insulating layer, a second conductive layer, a third conductive layer, and a second insulating layer over the oxide semiconductor layer, and a fourth conductive layer over the second insulating layer. The second conductive layer and the third conductive layer each contain tantalum and nitrogen. In each of the second conductive layer and the third conductive layer, the percentage of a first tantalum bonding state is lower than or equal to 3%, and the percentage of a second tantalum bonding state is higher than or equal to 5%.

Abstract: In the programmable controller and the exclusive control communicating method therefor according to the present invention, a program devices is connected to each of the bus-extended and distributed sections by an extension cable and an extension I/F units, and a plurality of connected program devices communicate with one CPU unit exclusively controlling each other in accordance with an exclusive control signal outputted from an exclusive control signal generating circuit.

Abstract: In the programmable controller and the exclusive control communicating method therefor according to the present invention, a program devices is connected to each of the bus-extended and distributed sections by an extension cable and an extension I/F units, and a plurality of connected program devices communicate with one CPU unit exclusively controlling each other in accordance with an exclusive control signal outputted from an exclusive control signal generating circuit.

Abstract: A programmable controller comprises a program apparatus and a CPU unit. The program apparatus displays, on a screen, a program of an arbitrary sequence step in a sequence program programmed in the CPU unit, to monitor a device condition of the sequence program displayed during execution of the CPU unit. The CPU unit transmits an arbitrary device having an index qualification and a condition of the arbitrary device to the program apparatus during execution of the programmed sequence program. Similarly, the CPU unit can transmit the arbitrary device and the condition thereof in accordance with a condition of an index specified by an operator.