CPU 314 for S7-300 Racks
The Siemens 6ES7314-1AG13-0AB0 is a CPU 314 for the S7-300 platform, handling up to 256 digital inputs and 256 digital outputs in a compact 40 mm wide housing. It supports programming in LAD, FBD, STL, SCL, GRAPH, HiGraph, and CFC, and requires STEP 7 V5.2 SP1 or higher with the corresponding hardware update.
Memory and Backup
The integrated backup provides 6 weeks of retentive data retention at 40 °C ambient temperature, covering inputs, outputs, memory bits, DBs, timers, and counters. The maximum process image size is 256 bytes, and the I²t rating for the module is 0.5 A²·s.
Communication and Expansion
The CPU includes an integrated MPI interface and RS 485 port, and can connect to PROFIBUS as a client (via CP and loadable FB) or as a server. Up to 4 CPs for LAN and 8 CPs for PtP communication can be added, but the CPU itself has no integrated PROFIsafe support and routing is not available. The module is not expandable and has no adjustable parameters for the process image; forcing is supported.
No official lifecycle status or successor is recorded in the available evidence. Confirm fit against the existing S7-300 rack and the required STEP 7 version before specifying.