Siemens 6ES7 318-3EL01-0AB0 Programmable Logic Controller CPU Module

Siemens 6ES7 318-3EL01-0AB0 SIMATIC S7-300 CPU 319-3 PN/DP is a compact PLC central processing unit for S7-300 systems. It delivers three integrated communication channels: MPI/DP at 12 Mbit/s for classic fieldbus, DP Master/Slave for PROFIBUS DP devices, and an Ethernet PROFINET interface with a built‑in 2‑port switch for Ethernet networking. The module provides 2 MB of work memory and 2 MB of memory for user program and data, and it requires a Micro Memory Card for program storage. It ships without built‑in I/O, so external I/O modules are used to connect inputs and outputs. The CPU’s combination of DP/PN connectivity and modest program/data memory makes it suitable for mid‑range S7‑300 applications that need Ethernet access and DP/PN interoperability in a compact form factor.