LABVIEW SERIAL MODBUS

[asadmehmood]

I am attempting to read Modbus holding registers (10000 to 10150). While I can view the data successfully in a Modbus application, I keep encountering error 56 in LabVIEW.

[Jay14159265]

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@asadmehmood wrote:

I am attempting to read Modbus holding registers (10000 to 10150). While I can view the data successfully in a Modbus application, I keep encountering error 56 in LabVIEW.

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Are you using both applications at the same time? 

[RTSLVU]

Error 56 is a timeout error, so check your serial settings and your physical connections to the device.

Also make sure the Modbus application is not still open and has released the Com port.

[LVNinja]

Double check the address numbers wouldn't you use address number 10000 ? 

[asadmehmood]

I have closed all the applications, but I am unsure if I am writing the address correctly. I'm not sure if the error is due to the address or something else.

[asadmehmood]

I tried 10000 but still i got the same error

[RTSLVU]

Have you tried serial type RTU? 

[LVNinja]

have you tried without loop ? 

[altenbach]

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@asadmehmood wrote:

I am attempting to read Modbus holding registers (10000 to 10150).

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Are these values in decimal or hexadecimal?

[asadmehmood]

In decimal