Patent ID: 7913016

Claim:
A method of determining request transmission priority subject to request source and transmitting request subject to such request transmission priority in application of Fieldbus communication framework, comprising the steps of: (a) obtaining a user setting; (b) transmitting a plurality of external requests from a remote control end to a communication device one after another, and the communication device receiving the external requests; (c) the communication device determining whether the source of each received external request has a priority right; (d) the communication device determining whether there is at least one logical operation condition established; (e) the communication device coupling the logical operation conditions subject to the user setting and the priority right of the source of each received external request to determine whether each received external request has a priority to transmit; (f) the communication device transmitting to a slave device each of said received external requests that does not have the priority to transmit as an ordinary request; and (g) the communication device transmitting to a slave device each of said received external requests that has the priority to transmit as a priority request; wherein the logical operation condition is coupled subject to an on/off switch function settable by a user.