| Full Order Number |
6ES7312-1AD10-0AB0 |
| Official Product Model |
CPU 312 (Standard S7-300 CPU, NOT CPU 312C compact) |
| Product Series |
SIMATIC S7-300 Standard Central Processing Unit |
| Manufacturer |
SIEMENS AG |
| Country of Origin |
Germany |
| Hardware Version |
01 |
| Default Firmware Version |
V2.6 |
| Required Engineering Software |
STEP 7 V5.1 SP4 or higher; HSP package for firmware compatibility |
| Product Lifecycle Status |
Discontinued since 01.10.2013, successor model: 6ES7312-1AE14-0AB0 |
| Integrated Work Memory |
32 KB (non-expandable) |
| Retentive Data Memory |
8 KB (MMC maintenance-free retention, no backup battery) |
| Mandatory Load Storage Medium |
Micro Memory Card (MMC), no internal flash memory |
| Maximum Supported MMC Capacity |
8 MB |
| MMC Data Retention Lifespan |
Minimum 10 years after last programming |
| Max Quantity of DB/FB/FC Blocks |
1024 pieces for each block type |
| Maximum Single Program Block Size |
64 KB |
| Bit Logic Operation Execution Time |
0.2 µs per operation |
| 16-bit Integer Addition Execution Time |
2 µs per operation |
| 32-bit Floating-point Multiplication Execution Time |
5 µs per operation |
| Default Process Image Area Size |
128 Byte Input / 128 Byte Output |
| Integrated Communication Interface |
Single MPI RS485 port only (No PROFIBUS-DP / PROFINET onboard) |
| Maximum MPI Baud Rate |
187.5 kbit/s |
| MPI Supported Functions |
PG/HMI communication, Global Data (GD) exchange |
| PROFIBUS Support |
Only via external CP342-5 communication processor (no native DP master) |
| Maximum Total Expansion Modules (CR only, no expansion racks) |
8 signal modules max (CPU + 7 SM/FM/CP) |
| Expansion Rack Support |
Not supported (IM360/IM361 interface modules unavailable for this CPU) |
| Maximum Local Digital I/O Points |
1024 DI / 1024 DO |
| Maximum Local Analog I/O Channels |
256 AI / 256 AO |
| Distributed I/O Capacity |
Limited to CP342-5 PROFIBUS expansion modules |
| Rated Power Supply Voltage |
24 V DC |
| Allowable Supply Voltage Range |
20.4 V DC ~ 28.8 V DC |
| Rated Operating Current Draw |
600 mA |
| Typical No-Load Current Draw |
200 mA |
| Typical Cold Power-On Inrush Current |
2.5 A |
| Short-Circuit Energy Withstand (I²t) |
0.5 A²·s |
| Typical Full-Load Power Loss |
2.5 W |
| Power Supply Voltage Dip Hold-up Time |
5 ms |
| Recommended External Protection Fuse |
Minimum 2 A DC |
| Module Overall Dimensions |
40 mm (Width) × 125 mm (Height) × 130 mm (Depth) |
| Approximate Net Weight |
270 g |
| Mounting Standard |
DIN rail EN 50022 (35 mm standard industrial rail) |
| Enclosure Protection Class |
IP20 (Indoor control cabinet installation only) |
| Continuous Operating Temperature (Horizontal Mounting) |
0 °C ~ +60 °C |
| Storage & Transportation Temperature Range |
-40 °C ~ +85 °C |
| Operating Relative Humidity Limit |
5% ~ 95% RH, non-condensing environment |
| Maximum Installation Altitude Without Derating |
≤ 2000 m above sea level |
| Vibration Compliance Standard |
IEC 60068-2-6 industrial cabinet vibration test |
| On-Board Diagnostic Buffer Capacity |
100 circular fault log entries |
| Supported Interrupt Types |
Hardware Interrupt, Diagnostic Interrupt, Cycle Interrupt |
| On-Board Timing Device |
Hardware Real-Time Clock (RTC), no NTP sync (no Ethernet port) |
| Firmware Upgrade Method |
Offline upgrade via MMC card, no direct PG/PC connection required |
| Standard Compliance Certifications |
CE, UL, CSA, EAC, FM Class I Div 2 |
| Export Control ECCN Code |
9N9999 |
| Onboard I/O |
No integrated digital/analog I/O (pure standard CPU, not compact CPU 312C) |
