Automatic configuration of synchronous block execution for control modules run in fieldbus networks

A method of assigning function blocks of a control module to devices for execution within a process control network, the process control network having a process controller communicatively coupled to an input/output device which is connected to one or more field devices via a data bus, the method comprising:

• determining a set of function blocks disposed on a forward flow path of the control module, the not of function blocks including an input function block, an output function block and one or more intermediate function blocks;
• determining if each of the input function block and the output function block on the forward flow path of the control module is assigned to execute in the one or more field devices on the data bus;
• and
• using a processor for assigning at least one of the one or more intermediate function blocks on the forward flow path of the control module to execute in the input/output device if both the input function block and the output function block on the forward flow path of the control module are assigned to execute in the one or more field devices on the data bus.

A process control network, comprising:

• a user interface device;
• a process controller communicatively coupled to the user interface device via a first communication network;
• a Fieldbus segment including a data bus and one or more Fieldbus field devices communicatively connected to the data bus, wherein the one or more Fieldbus field devices communicate over the data bus using a pre-established communication schedule;
• an input/output device directly connected to the data bus and communicatively connected between the process controller and the data bus;
• and
• a control module having plurality of communicatively linked function blocks which operate together to perform a process control loop, wherein the plurality of communicatively linked function blocks includes an input function block, an output function block and at least one intermediate function block, wherein the input function block and the output function block are located in the one or more Fieldbus field devices and the at least one intermediate function block is located in the input/output device and wherein each of the input function block, the output function block and the at least one intermediate function block communicates over the data bus using the pre-established communication schedule;
• further including a processor, a computer-readable memory and a routine stored in the compute readable memory, wherein the routine executes on the processor to automatically assign the function blocks of the control module for execution in specific devices within the process control network;
• wherein the routine;
• determines a set of function blocks disposed on a forward flow path of the control module, the set of function blocks including the input function block, the output function block and the at least one intermediate function block;
• determines if each of the input function block and the output function block on the forward flow path of the control module is assigned to execute in the one or more Fieldbus field devices on the data bus;
• and
• assigns the at least one intermediate function block on the forward flow path of the control module to execute in the input/output device if both the input function block and the output function block no the forward flow path of the control module are assigned to execute in the one or more Fieldbus field devices on the data bus.