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SERVICE PROVIDING DEVICE, ALTERNATIVE SERVICE PROVIDING DEVICE, RELAYING DEVICE, SERVICE PROVIDING SYSTEM, AND SERVICE PROVIDING METHOD
SERVICE PROVIDING DEVICE, ALTERNATIVE SERVICE PROVIDING DEVICE, RELAYING DEVICE, SERVICE PROVIDING SYSTEM, AND SERVICE PROVIDING METHOD
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机译:服务提供装置,替代服务提供装置,中继装置,服务提供系统和服务提供方法
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摘要
A service providing device included in a process control system in a plant, the service providing device includes a communicator configured to perform communication via a network, a service provider configured to provides a service via the communicator by exclusively assigning first identification information to one of the service providing device and an alternative service providing device, the first identification information being common to the alternative service providing device which provides the service instead of the service providing device, and a heartbeat transmitter configured to transmit heartbeat information for notifying that the service is normal to the alternative service providing device via a relaying device by using second identification information which is different from the first identification information.
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