EQUIPMENT CONTROL LOCKING SYSTEM FOR NETWORK SYSTEM, AND RECORDING MEDIUM RECORDING LOCKING CONTROL PROGRAM

PROBLEM TO BE SOLVED: To provide a locking system of an equipment control in a network system, capable of maintaining an operation as intended by a using requester, even when the equipment is operated via a network or operated without going through the intermediary of the network. SOLUTION: Equipment A100 comprises a locking/unlocking unit 104 for deciding an own locking state, based on a locking command from equipment B150 connected to an own input unit 105 or an IEEE 1394 bus 100 and an own locking state, and a functional unit 103 for executing functions, in response to only a command from the equipment B150, based on a decision by the unit 104. The equipment B150 has an input unit 154 or the like for inputting a locking command, and a function controller 153 for transmitting the locking command from the unit 154 to the equipment A100, connected to an IEEE 1394 bus 110 for receiving as to whether the locking-on has been successful or the locking-on has been unsuccessful.