Siemens TI315-DD Central Processing Unit Module

Siemens TI315-DD Central Processing Unit Module is a SIMATIC CPU designed for TI315-based control systems, serving as the processing core that executes PLC programs and coordinates I/O across the TI315 backplane. The module is identified in product listings as TI315-DD, with documentation noting a 9308 24 VDC OUTPUT (FF5) configuration associated with the unit’s interface block. As a TI315-DD CPU module, it plugs into compatible Siemens TI315 infrastructure to manage logic, timing, and communication tasks within a compact, field-installable package. This CPU is designed for use in standard TI315 cabinets and supports integration with TI315 I/O modules to form a scalable automation solution. Applications typically include simple to moderate PLC control tasks in machine and process environments where TI315 systems are deployed, such as discrete control, sequencing, and basic interlocks, using the existing backplane and inter-module communication common to the TI315 ecosystem. When selecting this module, verify compatibility with the TI315 backplane, the power domain, and any required FF5-end blocks for 24 VDC outputs in your rack layout.