Product Overview
Technical Summary
| Product type | CPU 312 |
|---|---|
| Rated supply voltage | 24 V DC |
| Permissible supply voltage range | 19.2 V to 28.8 V DC |
| Interface | 1 integrated RS 485 interface; MPI |
| MPI transmission rate, max. | 187.5 kbit/s |
| Integrated work memory | 32 kbyte |
| Plug-in load memory | MMC, max. 8 Mbyte |
| Digital inputs | 0 |
| Digital outputs | 0 |
| Operating temperature | 0 °C to 60 °C |
Key Features
Product type designation: CPU 312 for the SIMATIC S7-300 family.
Rated supply voltage: 24 V DC. The integrated RS 485 interface supports MPI with a maximum transmission rate of 187.5 kbit/s.
Work memory: 32 kbyte, not expandable.
Plug-in MMC load memory is supported up to 8 Mbyte; a Micro Memory Card is required.
Typical processing times are 0.1 μs for bit operations and 1.1 μs for floating point arithmetic. Dimensions are 40 mm × 125 mm × 130 mm; weight is approximately 270 g.
Product cancellation.
Frequently Asked Questions
What exact line item is Siemens 6ES7312-1AE14-0AB0?
It is a SIMATIC S7-300 CPU 312 central processing unit with an integrated 24 V DC power supply and MPI.
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 is available on this CPU?
It has 32 kbyte integrated work memory, which is not expandable, and supports plug-in MMC load memory up to 8 Mbyte.
Is a Micro Memory Card required?
Yes. The product description specifies that a Micro Memory Card is required.
