# Data transmission through power lines

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We have several CNC (HMI) machining centers in our plant. I want to connect all to a central PC so that whenever I want I can monitor/work on any particular machine from a centralised place. I do not want to invest money in interconnecting the CNCs with a separate network. Instead I will prefer to use the 440V, 50Hz, 3 phase power supply line for data transmission. I shall be grateful if anyone can suggest any reference (books, journals,research papers,websites,etc) related to this topic. With thanks
M-30/7,
TELCO Colony,
Jamshedpur-831004 (India)
Email: [email protected]
Ph:91-0657-487549 (R)

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#### Edgar F. Hilton

I would suspect that there might be a problem in cleaning up the signal, especially since you are driving induction motors. Thus, I would suspect a loss in transfer speeds. I strongly suspect that in the long term, it should be cheaper to set up a secondary network with shielded cables (such as BNC).

Regards,

Willy Smith
Numatics
Costa Rica

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#### jim evans

Has anyone done a real comparison of all the technologies out there for power line communications.. Is it all "hipe" or does some of it actually work well.

Jim Evans