| -link"> | | | | program and while machining, after execution of |
| Synopsis: | | | | every chunk the part program memory must be |
| For machining very large programs on a general | | | | cleared, a new chunk loaded and executed. This |
| purpose CNC, the internal part program memory | | | | involves a lot of operator intervention and may |
| may become a constraint. This is usually the case | | | | result in serious accident if a chunk out of |
| with CAD generated programs for Die milling | | | | sequence is loaded. This is where the DNCI option |
| where the program size may run into the range | | | | can be a big advantage. |
| of 20-30Mb, which is far beyond the capacity of a | | | | What is DNCI? |
| standard Fanuc-0 control. To execute such | | | | DNCI is an add-on to the AUTO mode of the |
| programs the alternatives are:a) Breakup the | | | | CNC where instead of executing the part |
| programs to smaller manageable chunks as per | | | | program from the memory of the CNC, it |
| the memory capacity of the control and execute | | | | executes program blocks dynamically transferred |
| it one by one.b) Use the DNCI function available | | | | to it through the RS232 port. This article explains |
| with the control. | | | | how to set up the DNCI and successfully execute |
| Option a) is cumbersome since a lot of | | | | programs. |
| pre-processing has to be done to break up the | | | | |