ak,
Thanks for contacting National Instruments. The SCB-100 is a general purpose connector block used with many of our DAQ devices. The pinout is a direct mapping from the back of the DAQ device to the screw terminals on the SCB-100. There is no added functionality given by the SCB-100 in terms of counters or any other input or output channels. The 6514 will only have the channel types and output pins as specified in it's specifications and data sheet. The pinout in the data sheet can be used as a reference to where the different pins map to the SCB-100.
Regards,
Kenn North
Principal Product Manager - Search, Digital Analytics
http://ni.com/search