Adressing longer string in Allen Bradley PLC.

[TT_13245152]

Hello, 

I've created new string data type in Rockwell PLC, that contains 250 and 1000 signs. However I'm unable to read 1000 it in KEP. 

This article says, that 255 can be displayed, 

"When the String length is more than 255 the left characters will not be displayed"

However i get unknown value. What can be the issue?

[aservetas · Accepted solution]

The OPC Quick Client installed with the server is limited to displaying 255 characters as it is not expected to be used for anything other than testing.

Third-party or custom client applications reading the DATA component of those string tags should be able to display greater than 255 if that is what the client is designed to allow.

Best regards,

Andy Servetas
Principal Technical Support Engineer | Kepware Technologies