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mmervenne

FX2n-4da with two plcs

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Hello all i was just wondering if it was possible to use a FX2N-4DA Special Function Block with each PLC using it. Any suggestions or advice would be greatly appreciated.

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CONNECT THE TWO PLC IN A PARRALEL NETWORK. CONNECT THE MODULE TO ONE OF THE PLC . YOU CAN USE PARRALEL COMMUNICATION TO TRANSFER THE DATA FROM FROM DATA BETWEEN THE TWO PLC. IN THIS WAY YOU CAN HAVE ONE OF THE PLC DOING THE DA COVERTING BUT THE RESULT CAN BE USE IN BOTH PLC

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As Jerry said, parallel link will be your best bet. Get a couple of 485-BD boards, wire them together, then set M8020 in one PLC and M8021 in the other. Then the data range of M400-499 and D490-499 will go one way and M500-599 and D500-509 will go the other. Just make your FROM statements in the PLC with the 4AD point to the shared memory area and read it from either PLC.

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