The Siemens PLC model number you provided, 6ES7223-1PH22-0XA8, corresponds to the SIMATIC S7-1200 series of programmable logic controllers (PLCs) from.

The PLC is part of the S7-1200 family, which is a compact and modular PLC platform designed for small to medium-sized automation projects. The 6ES7223-1PH22-0XA8 model is one of the available variations within this series.

Here is a breakdown of the code:

6ES: This prefix is used to identify Siemens products.

7223: This part of the code indicates the specific model within the S7-1200 series.

1PH22: This portion represents the specific version or configuration of the PLC.

0XA8: This part of the code denotes specific features or options that may be present in the PLC, and it can vary depending on the configuration.