I have a Micron WF41 cnc mill with said TNC355 control and would like to have a look at the PLC program to make couple modifications regarding tool changer operation (disable it, and all related error messages with it), and the mill came with a full enclosure which was damaged and discarded, so there are few other door position check and locking routines I would like to edit.
I have experience of using the TNC155 and 355 and doing some troubleshooting, but not with the PLC program itself, and studying the service manual regarding programming the PLC doesn't really get me anywhere - what I wanted to do is to view/edit/export the current PLC program stored in the eprom, but all I see is NOP in every line when doing the following:
Turn on the machine:
- it goes to axis reference screen
- I cannot currently reference the axis because of few error messages related to (supposedly) hydraulics, enclosure door switches and tool changer arm positioning
- I then press the MOD, "up button" to enter code:951026, I can access the input/output/marker etc screens, everything seems fine so far, but when I press the "edit" button (used normally for NC program editing), it goes into PLC edit screen, but as I said all I see is NOP in every line, which makes me think that I'm looking at the memory where PLC might be stored, but it isn't loaded from the EPROM into RAM.
Changing parameter 77 to run the PLC program from RAM yields same results - NOP in every line, a blank PLC program essentially.
I have electric wiring diagrams for this machine, but there seems to be something missing there, I can bypass the door check error messages by bridging inputs in the control cabinet, but the hydraulics message and tool changer arm messages give little clues as to what is the issue, there are 2 hydraulic circuits in the machine, one for tool retention (wired and operational) and the other, completely separate and not connected at the moment, is for tool changer arm operation, so viewing the PLC program might give me some clues as to what the control seems to be complaining about (in French...).
In the end I would be fine with running the PLC program from RAM, since it looks from the manual that is quite easy to export/import it if the need arises, but I'd like to view/edit the original program and not recreate it from scratch.
Any suggestions regarding how to view the PLC program on the control?
I have experience of using the TNC155 and 355 and doing some troubleshooting, but not with the PLC program itself, and studying the service manual regarding programming the PLC doesn't really get me anywhere - what I wanted to do is to view/edit/export the current PLC program stored in the eprom, but all I see is NOP in every line when doing the following:
Turn on the machine:
- it goes to axis reference screen
- I cannot currently reference the axis because of few error messages related to (supposedly) hydraulics, enclosure door switches and tool changer arm positioning
- I then press the MOD, "up button" to enter code:951026, I can access the input/output/marker etc screens, everything seems fine so far, but when I press the "edit" button (used normally for NC program editing), it goes into PLC edit screen, but as I said all I see is NOP in every line, which makes me think that I'm looking at the memory where PLC might be stored, but it isn't loaded from the EPROM into RAM.
Changing parameter 77 to run the PLC program from RAM yields same results - NOP in every line, a blank PLC program essentially.
I have electric wiring diagrams for this machine, but there seems to be something missing there, I can bypass the door check error messages by bridging inputs in the control cabinet, but the hydraulics message and tool changer arm messages give little clues as to what is the issue, there are 2 hydraulic circuits in the machine, one for tool retention (wired and operational) and the other, completely separate and not connected at the moment, is for tool changer arm operation, so viewing the PLC program might give me some clues as to what the control seems to be complaining about (in French...).
In the end I would be fine with running the PLC program from RAM, since it looks from the manual that is quite easy to export/import it if the need arises, but I'd like to view/edit the original program and not recreate it from scratch.
Any suggestions regarding how to view the PLC program on the control?