Product information
Overview
Key Features
- CPU 312 central processing unit: CPU 312 central processing unit with MPI and integrated power supply.
- 24 V DC supply: Rated supply voltage: 24 V DC; permissible range: 19.2 V to 28.8 V DC.
- Work and load memory: Integrated work memory: 32 kbyte, not expandable. Plug-in MMC load memory is supported up to 8 Mbyte.
- Processing performance: Typical CPU processing times: 0.1 μs for bit operations, 0.24 μs for word operations, 0.32 μs for fixed point arithmetic, and 1.1 μs for floating point arithmetic.
- MPI communication: 1 integrated RS 485 MPI interface with a maximum transmission rate of 187.5 kbit/s; PROFINET interfaces: 0.
Technical Summary
| Product type | CPU 312 |
|---|---|
| Firmware version | V3.3 |
| Rated supply voltage | 24 V DC |
| Permissible supply voltage | 19.2 V to 28.8 V DC |
| Integrated work memory | 32 kbyte |
| Plug-in MMC load memory, max. | 8 Mbyte |
| Total blocks, max. | 1 024; DBs, FCs, FBs; the maximum number of loadable blocks can be reduced by the MMC used. |
| MPI interface | 1 integrated RS 485 interface; 187.5 kbit/s max. |
| Digital inputs / outputs | 0 / 0 |
Frequently Asked Questions
What is the exact Siemens model and CPU type?
The exact model is 6ES7312-1AE14-0AB0, with product type designation CPU 312.
What supply voltage does the CPU 312 use?
The rated supply voltage is 24 V DC, with a permissible range from 19.2 V to 28.8 V DC.
What memory configuration does this CPU have?
It has 32 kbyte integrated work memory that is not expandable. Plug-in MMC load memory is supported up to 8 Mbyte, and a Micro Memory Card is required.
Which interfaces and protocols are supported?
The unit has 1 integrated RS 485 MPI interface with a maximum transmission rate of 187.5 kbit/s. It has 0 PROFINET interfaces and supports MPI.
