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'''Software'''
'''Software'''
Find a process for backing up and restoring system parameters. Update: Parameters can be accessed by pressing MOD repeatedly until you are prompted to enter a Code, which is 95148. The EXT key allows import of parameters from this screen, but apparently not export.
Find a process for backing up and restoring system parameters. Update: Parameters can be accessed by pressing MOD repeatedly until you are prompted to enter a Code, which is 95148. The EXT key allows import of parameters from this screen, but apparently not export. Care should be exercised with machine parameters.
Figure out how to drip code to the Heidenhain (Ed).
Figure out how to drip code to the Heidenhain (Ed).
Set up the tool chain.
Set up the tool chain.
'''Electrical'''
'''Electrical'''
== Reference ==
== Reference ==
''' Tool Chain '''
The TNC 151 can be configured for Conversational mode or G-code. The former is designed to be simpler to view, understand, and for a machinist to key in from the control panel. The controller apparently can translate programs between the two formats. But some things may not translate well. For example, the G-code G00 (Rapid) does not exist in Conversational language.
G-code itself has variations among CNC machine platforms. The variant the TNC 151 uses claims to be close to the ISO RS-274-D standard. This differs from other manufacturers, so G-code generated for Fanuc might not be compatible. The TNC 151 has some particular requirements about G-code structure.
Simple jobs can keyed into the TNC 151 directly, in either Conversational or ISO (G-code) mode. These support subroutines and loops, so repetitive operations can be programmed once and executed at different locations.
For somewhat more complex jobs, the TNC 151 can export and export programs, in either Conversational or ISO (G-code) format, via a serial port to or from a computer. One can create and edit the job offline.
It is expected most users will want to use a CAD package to design a part, then build the tool paths for it in a CAM package, and export G-code. This could then be uploaded into program memory on the TNC 151 and executed.
Because program memory in the TNC 151 is limited by length, complex jobs will probably need to be sent to the machine using a "drip feed" where the computer sequentially feeds G-code instructions to the TNC 151 which executes them directly without storing them in memory.
''' Emulator '''
''' Emulator '''
A TNC 151 emulator that runs under Windows is available for download at http://www.cnc-developments.fsnet.co.uk/ Note that this definitely supports Conversational mode, but it is unclear whether it supports G-code programming. It appears to be shareware, with some features limited.
A TNC 151 emulator that runs under Windows is available for download at http://www.cnc-developments.fsnet.co.uk/ Note that this definitely supports Conversational mode, but it is unclear whether it supports G-code programming. It appears to be shareware, with some features limited.
''' Web Resources '''
* http://faculty.etsu.edu/hemphill/entc3710/heid-op/heid.htm - University course documentation using a similar setup. Note that it uses G-code, not Conversational mode.
* http://faculty.etsu.edu/hemphill/entc3710/nc-prog/index.htm - Discussion of CNC. The document appears unfinished.