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nikita1

cable for modbus communication on M91

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All our controllers use Modbus RTU on their serial ports. In addition, almost all Vision models (except V120) support Modbus IP, if optional Ethernet card was installed.

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Thanks Emil,

i'v loaded the Modbus slave demo program from the U90 ladder examples.

and try to read data with Modbus Poll application,

now ipost-9027-0-49614000-1346573123_thumb.jpg'm getting a time out message,

does somone have any idea whats wrong ,

attach is a screenshot from Modbus poll .

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First of all - disable Flow control.

Check if the controller is set to ID1. The standard example is set ot ID2.

Please check again the communication cable.

I hope these tips will help.

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