Emerson Exchange 365

BKCAL_OUT is used to initialize upstream control blocks when downstream blocks are not available. This is mainly used for bumpless transfer when a downstream block changes from Manual (operator controlled output) to a mode where it follows the output of an upstream block. It also indicates to the operator (via the mode IMAN, initialize Manual) that the downstream block is not available, hence there is no use adjusting the output.

For your application you could use BKCAL_OUT to initialise your calculation output and then perhaps ramp to the desired output. This is going to a little bit of complex logic and you should evaluate if it is desirable /necessary. If initialization is not required the parameter does not need to be connected (as you probably know by now).