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Former Member
Jun 04, 2009 at 03:18 AM

Write a char string to PLC using SAP UDS 4.0 and RSLinx

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We have the following setup,

XMii 12.0

UDS 4.0

RSLinx as the OPC

I have setup a simple OPC DA tag in a test PLC. I have also setup the alias configuration with groups and items. I am able to read and write numeric values to the PLC.

However, I am not able to write character strings. Even if I set the data type for the item within alias config as a "VarChar", I am not able to write a string to the PLC. It gives a type mismatch error.

Does UDS not support writing alphanumeric characters to a PLC ? What am I missing ?

Regards,

Ramesh

Edited by: Ramesh Yelisetty on Jun 4, 2009 5:45 AM