Casio TE-4000 Quick Setup Manual page 37

How to set up floating clerk Interrupt in detail
Make sure you have set up the In-line network from the above
notes, Also please make sure that you have not removed the clerk
interrupt buffers
Enable Clerk Interrupt in the 2722 code
Switch to the program position
2722 1000000000
If you need to assign the Clerk Interrupt buffers use the worksheet
below
Note: MGR Mode is X position
37