The Controller already has the capability of allowing a PLC to select a Setup Configuration through the MODBUS interface. However, it does not have control over when the request to load it is made.

Prior to this change the controller would read the desired Setup Configuration ID from the PLC when entering certain run modes. However, this was too late in some cases, for example concerning Setups that need to change between and before a coil change.

A function coil has now been defined that will trigger the controller to read the desired Setup Configuration ID from the PLC and attempt to load the specified configuration. The Setup Configurations and Setups must not be locked out by Eclipse, the Configuration with the specified ID must exist and the controller Run Mode must be HALTED. If the first attempt fails and error message will be displayed. The controller will continue to retry periodically but not display any more errors unless the controller attempts to enter the run mode and the configuration is still unable to load.

Details on the Function Coil are described in the XL200 PLC Interface document.