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incompatible configuration - expansion error

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I'm running a V570 with expansion modules : Ex-A1 with 5x IO-DI8-TO8 and 1x IO-AI4-AO2; I recently added 2x IO-D16A3-TO16. Now the PLC gives very frequently an expansion error. When this occurs, PLC gives the black text screen, the 2 new modules get a flashing green run led, the older modules remain running (fixed green led). Never had problems before unless with these new modules. I even disconected all IOs from the new modules, but it keeps going from time to time into expansion error.

Are there incompatibilities known with this configuration? Is there a way to manipulate the conditions that cause the error (change SB's, timers,...?) Suggestions welcome !

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Dear Sir,

Please review my comments below and send your feedback to support@unitronics.com :

· How did you install all the I/O's? are they installed in one din rail properly?

· Can you send us any picture of the system which include all the models?

· Sorry to bother you with this question but Please verify that you select the correctmodels in HW.


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