Siemens SIMATIC S7-300 CPU 314 for expanded temperature range, 24 V DC integrated power supply, 24 KB working memory, order code 6ES7314-1AE83-0AB0.
The 6ES7314-1AE83-0AB0: The CPU carries 24 KB of working memory (code and data), which sets the program-size ceiling for the application. The expanded temperature range allows operation beyond the standard 0–60 °C envelope — relevant for cabinets in non-conditioned areas, outdoor enclosures, or process zones with ambient heat.
For a like-for-like replacement, a cross-reference to a current S7-1200 or S7-1500 CPU with the same expanded temperature rating would need to be evaluated against the application's I/O count, memory, and form factor.
Alternative models and sibling configurations in the same Siemens series. For obsolete or discontinued parts, these models can serve as compatible replacements or functional alternatives for plant maintenance.
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