DNC for Acramatic 900

[winchdoc]

I have a Cincinnati Milacron 5VC 750 with the Acramatic 900 control, and I want to run some long engraving programs. I have a dedicated PC to serve as the DNC host, but I cannot seem to get it to work as a drip feed.

I use the pc to load programs into the machine memory, but the machine memory is too small.

Can someone point me to a resource for the correct machine paramater settings, and host settings. I'm using SmartCam communicate which has served well for loading into memory, but the drip feed thing eludes me.

Thanks in advance

Doug

[Al_The_Man]

This may be close http://www.cadem.com/ncnet/dnc-detai...atic-850sx.pdf
Al.

[winchdoc]

Thanks for the link. I notice on the .pdf they say, "drip feed not available on this controller" This is not comforting... They go on to mention settings for DNC.

Is DNC and drip feed different? Does dripfeed have some sort of buffer load or something?

I've been around CNC stuff for a long time but never used DNC so my nomenclature may need some updating.

I also wonder why they don't list the acramatic 900 control, CM made a lot of them.

Doug

[Al_The_Man]

DNC is 'Distributed Numeric Control' where the information is passed to several machines as in a network.
Unfortunately there is also another definition using DNC (Direct Numeric control) which refers to the program being stored on the host and drip fed to the machine.
Cadem use the first definition.
Drip feed loads the machine buffer with program segments as needed.
The listings of machine details they show has been contributed by users of their software, so it may just be that no one has bothered to confirm with them what para. and hardware work with the 900, if it was not changed greatly from 850 to 900 there is a good chance it will be the same, you may have to confirm this from a differnent source or from other users here.
Al.

[winchdoc]

I had some success getting my SmartCam communicate to interface with my Acramatic 900 v2.

Using the Data Line feature, I can get the PC to send code to the controller, and it will execute the commands, but it appears that the PC does not wait for the controller to finish running each line of code. I read somewhere else on this forum that I should consider adding line delays, or character delays to my PC send paramaters.

I'm very encouraged with this progress. Can someone point me to more information on adding these delays?

Doug

[Pophamrt1]

Siemens provides a specific DNC program for the Acramatic 850/900 controls called "DCdnc." I think its up to version 3.2. Its a terminal program that includes drip feed, file transfer, etc, from fully integrated menus within the Acramatic control. Effectively you gain full control over unlimited nc file space, size, etc. on the PC's hard drive, USB, CD, even network. All from new screens that appear under the Acramatic's "Terminal" screen. Pretty trick piece of software and bulletproof... reliable enough to run lights-out for days at a time with virtually unlimited nc file size.

Third-party dnc programs don't get along very well with the Acramatic controls. The protocols used for buffer memory management are slightly different. Whereas Siemens dcDNC uses a very robust buffer management protocol, the newer programs use a somewhat less-robust (Windows-based) buffer protocol. The result is buffer "overload" and "timeout" error messages when trying to smoothly using these third-party dnc programs with the Acramatic.

The dcDNC software can be downloaded from files section, including instructions, cable schematics, etc., under the Yahoo Acramatic Control Users Group (ACUGroup)...

http://groups.yahoo.com/group/ACUGroup/

BTW, I'm not affiliated with Siemens or Cincinnati. Just an Acramatic 850SX owner (Cincinnati Sabre 1000 VMC) who's been enjoying the dcDNC software's unlimited file size and run time on a very solid machine.

[winchdoc]

Thanks, Pophamart1, that looks like just what I'm looking for. I have subscribed to the group, but it is listed as 'pending'. the list also looks relativly new. I hope I can get approved soon so I can check out the software you mentioned.

Doug

[meckardt55]

I would suggest that you invest in a " behind the tape reader" or (BTR) from Greco. This will let you run your programs from a standard PC disk as if it were a tape. I have installed several of the " Greco Box" and "CNC Stations" on machines with the 900 control for the same reasons that you have. You can also have your 900 load tapes converted to disk and load them through the Greco.

[meckardt55]

We service all Cincinnati Milacron machines, look us up on the web at cncmachineservices.com

[vpcnc]

For older CNC's that don't support true DNC or Drip Feed, I also recomend either a Greco MTIC or a Greco MiniFile, Both provide BTR function.
The MTIC interfaces directly to a PC via RS-232, while the MiniFile is a Floppy Drive unit.

[Fairbanks]

Are you people serious, is that Greco crap even around anymore?

[grweldon]

Greco IS still around, but there is still a BUNCH of old, existing Greco equipment in many thousands of shops.

I don't want to hijack the thread, but I have a Monarch VTC150 with an Acramatic 900 control. It reads block-by-block directly from the tape reader and has no internal memory for program storage.

I need to be able to communicate with this machine, but it has no serial port at all that I can find. The manufacture date of the machine is 1976 (no flames please)

I thought this subject was related enough to post in this thread, if not, I'll delete the post and create my own thread....BUT....can anybody enlighten me?

Thanks...