Change to program mode in Contollogix?

[razm]

Is it possible to change the Controllogix PLC state to remote program by code?
Is there an example for that?

[Archie]

Not since firmware version about 16. They changed the protocol to make it more secure, therefore very difficult to replicate in a driver.

[MajorFault]

I don't even think there is a way to do it in PLC code via SSV. 

If you want to stop executing code, put a negative preset in a "running" timer.  That will do the trick.

[dmroeder]

I read some release notes in the command line interface tool that suggested after a specific firmware, a full upload of the program is required for the mode to be changed.  So the driver would have to replicate that process in a way that the controller thought it was RSLogix/Studio5000, which would be an order of magnitude beyond the scope of any communication driver like this.