Fig. 4.6: Routing and use in stand-alone mode 1
S-1 is probably the most frequently used standard operating mode among the stand-alone applications. We recommend using it when you for example want to control two sound generators from your B-CONTROL, whereby both sound generators are played simultaneously from a master keyboard. To do this, MIDI data from the B-CONTROL and the keyboard have to be mixed and transmitted on both MIDI OUTs. This is done using the integrated merge function. The master keyboard is connected to the MIDI input of the B-CONTROL. Both expanders played from the master keyboard and controlled by the B-CONTROL are connected at the MIDI outputs. Control data for the BCF2000/ BCR2000 will probably be program change and real-time controller commands, while the keyboard will typically transmit keyboard commands (note on/off, velocity, after touch, pitch bend).
Fig. 4.7: Routing and use in stand-alone mode 2
Say you want to control just one sound generator from your B-CONTROL because the tone generator allows extensive editing (e.g. it’s a rack synthesizer or a sampler, as shown above). The MIDI keyboard should be able to play both sound generators. In this case, S-2 is the optimal setup. The second sound module can be a pure preset unit that doesn’t allow any programming. However, it can also be an effects unit that only receives program commands from the keyboard. This operating mode is also very useful when the data received by the second unit is undesired and could otherwise disrupt operation (e.g. to MIDI functions that cannot be switched off or the MIDI channel can not be changed).
FADER 
ROTARY BCR2000