Abstract: A welding device has a welding source and a welding-source peripheral device. The welding source has a welding-source-side storage section for storing a welding condition item and a transmitter for transmitting the welding condition item. On the other hand, the welding-source peripheral device has a receiver for receiving the welding condition item; a peripheral-device-side storage section for storing the welding condition item; a display for displaying the welding condition item; and a selecting section for selecting a proper item from the welding condition item. The structure above allows the welding device to be connected to various types of welding sources.

Abstract: A welding apparatus capable of effecting welding completion processing which is reliable and free of wasteful time, by transmitting the completion of wire fusion prevention processing to a welding machine 11, by transmitting the detected result to a controller 17 upon completion of the subsequent wire fusion detection processing, and by thus proceeding with processing while effecting the confirmation of completion of respective processing between the welding machine 11 and the controller 17.

Abstract: A welding voltage judgment portion 16 of judging to see if a predetermined value of welding voltage inputted from an input device 11 falls within a predetermined certain range is provided, and when the aforementioned welding voltage judgment portion 16 judges that the predetermined value of welding voltage deviates from the certain range, a standard voltage corresponding to the aforementioned inputted predetermined value of welding current is selected from a unitary voltage table portion 19, making it possible to always keep the welding voltage stored in the welding device within a proper voltage range even when the worker inputs conditions deviating from the proper range during the operation of inputting welding conditions.

Abstract: In the arc welding power supply and peripheral device for arc welding such as arc welding robot controller, a stored data output unit (19) of an arc welding power supply (10) issues stored data of a welding voltage selector (13) of the arc welding power supply (10) to a stored data input unit (17) of an arc welding robot controller (1), and the stored data input unit (17) of the arc welding robot controller (1) stores the entered stored data in a welding voltage selector (5), so that the memory capacity for stored data of the peripheral device such as arc welding robot controller may be kept to a minimum required limit. Further, for use in various arc welding power supplies, the voltage command type can be easily changed over between the welding voltage command type and adjusting voltage command type.