Component Configuration Mechanism for Rebooting

A method for configuring a circuit module, the method comprising:

• determining a configuration scenario from a set of possible configuration scenarios, the set including a first configuration scenario and a second configuration scenario;
• when the determined configuration scenario is the first configuration scenario, selecting an internal configuration source;
• when the determined configuration scenario is the second configuration scenario, selecting an external configuration source;
• and
• configuring a component of the circuit module using configuration data from the selected configuration source.

A computer-readable storage medium storing computer-executable instructions that, when executed, cause a processor to perform a method comprising:

• determining a configuration scenario from a set of possible configuration scenarios, the set including a first configuration scenario and a second configuration scenario;
• when the determined configuration scenario is the first configuration scenario, selecting an internal configuration source;
• when the determined configuration scenario is the second configuration scenario, selecting an external configuration source;
• and
• configuring the circuit module using configuration data from the selected configuration source.

A programmable logic controller comprising:

• a control module configured to obtain CPU configuration data;
• and
• a circuit module comprising an internal memory and configured to:
• obtain circuit module (CM) configuration data;
• compare the CPU configuration data with the CM configuration data;
• determining a configuration scenario from the comparing;
• and
• select a configuration source based on the configuration scenario, wherein the configuration source is either the internal memory or an external configuration source.