Prefix "C" not allowed


I was creating a modbus address with a C prefix in ignition but for some reason it’s not allowing me. I tried adding the prefix T in the modbus addressing I didn’t have any problems.

What could possibly be the cause of this? I’m only using a trial version of ignition could that affect it?

Thank You :thumb_right:

HR, IR, C, and DI are all prefixes that are used when directly addressing a Modbus tag (in other words, directly creating the SQLTag in the designer rather than using the mapping configuration you’re using), and those prefixes aren’t allowed in a mapping to ensure the addresses don’t collide.

Thank You :smiley: