Siemens 6ES7312-1AE14-0AB0 SIMATIC S7-300 CPU 312

Series#: Siemens

Product Details

Exact order number 6ES7312-1AE14-0AB0; CPU 312 for the SIMATIC S7-300.
32 KB integrated work memory; the work-memory capacity is not expandable.
SIMATIC Micro Memory Card required for load memory; card capacity up to 8 MB.
Integrated MPI interface for programming and S7 communications.
24 V DC rated supply with permissible range of 19.2–28.8 V DC.
Typical bit-operation time 0.1 µs; word operation 0.24 µs.
Engineering with STEP 7 V5.5 SP1 or newer, subject to the Siemens hardware support package.

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Specification

Datasheet (PDF)

Overview

The CPU 312 is an S7-300 central processor with 32 KB work memory and an MPI connection. It uses an external 24 V DC supply and requires a SIMATIC Micro Memory Card for load memory.

Technical specifications

Specification	Value
Product family	SIMATIC S7-300
CPU / order number	CPU 312 / 6ES7312-1AE14-0AB0
Rated supply	24 V DC
Permissible supply	19.2–28.8 V DC
Integrated work memory	32 KB; not expandable
Load memory	SIMATIC Micro Memory Card required
Maximum MMC capacity	8 MB
Communication interface	MPI
Typical bit operation	0.1 µs
Typical word operation	0.24 µs
Typical fixed-point operation	0.32 µs
Typical floating-point operation	1.1 µs
Typical no-load current	140 mA
Typical power loss	4 W
Engineering	STEP 7 V5.5 SP1 or higher; verify HSP for older releases

Integration and replacement notes

For a CPU replacement, transfer the user program and hardware configuration using a suitable Micro Memory Card and compatible STEP 7 project. Compare the full 6ES7 order number and firmware status; CPU 312C and later CPU 31x variants have different integrated I/O and memory characteristics.