N2 to Modbus Multidrop? 1

[sbuckingham]

Hello,

I'm currently working with a Johnson DX-9100-8454 PLC unit and am trying to interface it in a multi-drop style Modbus RTU network. Problem is, the only RS-485 protocol on the PLC unit is an N2 bus, which I believe is proprietary to Johnson Controls. Spoke with one of their application engineers and evidently I probably need to find some sort of converter or gateway to make this work, which of course Johnson doesn't manufacture. Does anyone know of a place to pick up a N2 to Modbus converter or have a different idea of how this can be done?

Thanks for your time,
Steve

 

[xnuke]

How about these?

If you need a MODBUS master interface:

http://cgproducts.johnsoncontrols.com/cat_pdf/publ3544.pdf

If you need a MODBUS slave interface:

http://cgproducts.johnsoncontrols.com/CAT_PDF/PUBL3543.pdf

xnuke
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