Patent ID: 8767564

Claim:
A field communication system that performs wireless communication with field devices, the field communication system comprising: a connection allowing unit configured to determine whether or not to allow a connection to the field device by referring a field device list, the field device list listing tag names related to the field devices; an address issuance unit configured to automatically issue a communication address for the field device if the connection allowing unit allows the connection with the field device; an address management unit configured to establish correspondences between the communication addresses and the tag names of the field devices by using the field device list; and a communication unit configured to transmit data to the field device designated by the tag name, the communication unit receiving the data transmitted from the field device, the data being used to control the field device designated by the tag name, wherein, the field device list lists a device ID for specifying the field device and the tag name attached to the field device, the connection allowing unit is configured to allow the connection if the device ID and the tag name that are acquired from the field device that is requested to connect coincide with a description in the field device list, and the address issuance unit is configured to issue the communication address that is unique to each of the field devices specified by the device ID.