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SINUMERIK CNC automation systems

DNC using RS232C (X140) on Siemens 840D Sl

Thread Starter: Maheshsn Started: 5/31/2012 2:05 AM Replies: 2

5/31/2012, 2:05 AM

Maheshsn

Joined 5/30/2012

Last visit: 6/19/2012

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Hello Experts,

I am using 840Dsl on a new project, the configuration is NCU720.2 + PCU50.3 + HMI - Sinumerik Operate.

We would like to develop a measuring function to measure 3D workpieces. We have a Software running on a PC which generates the measuring coordinates based on 3D CAD model. We would like to run the machine under a DNC mode so that the coordinates can be fed continuously to the controller and further measurements can be done. Software on the PC generates measuring points during run time based on the results of the previous measurements.

Please suggest which connection is preferrable RS232C or Ethernet. Any Help to find relevant documentation on the communication protocol would be appreciated.

Thanks,

Mahesh

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7/5/2012, 5:05 AM

YogeshB

Joined 7/10/2010

Last visit: 9/19/2012

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The response rate between the NC and external PC is not guaranteed by Siemens. Hence this method if not allowed.

All data that the NC needs to make a movement must be present in the NC and not on an external device.

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11/14/2012, 4:01 PM

bertbertbert

Joined 10/12/2012

Last visit: 12/5/2012

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still a problem?

ist your HMI Operate running on the PCU or embedded on the NC?

On the older HMI-Advanced there is an DDE Server called NCDDE which is able to transfer nc-code - i don't know how the HMI Operate is handling stuff like that

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