SIDirect Legacy object: Non-symbolic namespace

The SIDirect Legacy object provides an interface to support traditional SIMATIC tag names (for example, "DB1,INT0"). Use the Legacy object if you are using non-symbolic names (absolute addressing) to communicate with the PLC. To use absolute addressing, check the following settings in the S7_1500 PLC:

• PUT/GET communication must be enabled.

• Optimized block access must be disabled (non-optimized mode).

See SIDirect Legacy Object Pre-Configuration for additional information.