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Application Scenarios:In a high-speed packaging machine upgrade project, the existing Siemens S7-317-2DP CPU is struggling with the increased logic complexity and communication load from servo drives and vision systems. The VIPA 317-2AJ12 is deployed as a drop-in replacement. Its SPEED7 architecture (bit instruction time ~0.01 µs) drastically reduces the PLC scan cycle, enabling faster response to sensor inputs and tighter synchronization of the servo axes via the integrated PROFIBUS-DP master. The Ethernet port allows direct connection for programming and HMI communication without needing an additional CP card, solving the core pain points of performance bottlenecks and network congestion.
Parameter:
| Main Parameters | Value/Description |
|---|---|
| Product Model | 317-2AJ12 (CPU 317SE/DPM) |
| Manufacturer | VIPA GmbH (now part of Yaskawa) |
| Series/Platform | System 300S (SPEED7 Technology) |
| Compatibility | Siemens S7-300 (Hardware/Software) |
| CPU & Performance | SPEED7 32-bit RISC, Bit Instruction: ~0.01 µs |
| Work Memory | 2 MB (Integrated, expandable to 8 MB via MMC) |
| Load Memory | 8 MB (Supports MMC/SD card up to 1 GB) |
| Communication Ports | MPI/DP (PROFIBUS-DP Master, 12 Mbps), PtP (RS485), Ethernet (PG/OP) |
| I/O Capacity | Up to 32 modules (4 racks), 8192 bytes I/O address area |
| Programming Software | Siemens STEP 7 (Classic/TIA Portal with VIPA HSP) |
| Power Supply | 24 V DC (20.4 – 28.8 V DC) via backplane |
| Operating Temperature | 0°C to +60°C (or +50°C per some specs) |
| Status | Discontinued (EOL) – Succeeded by 317-2AJ23 |
Technical Principles and Innovative Values:The 317-2AJ12 is a strategic product that combines Siemens S7-300 ecosystem compatibility with VIPA’s proprietary high-speed technology.
- Innovation Point 1: SPEED7 Processing Core: Unlike standard microcontrollers, the SPEED7 is a custom RISC processor optimized for PLC logic execution. It achieves sub-microsecond bit operation times, which is significantly faster than many contemporary standard CPUs. This allows for shorter cycle times in high-speed machine control applications without requiring a more expensive motion controller.
- Innovation Point 2: Multi-Protocol Integration: The CPU integrates three key communication channels into a single module: a PROFIBUS-DP master for connecting remote I/O (like ET 200S), a Point-to-Point (PtP) serial port for legacy devices (e.g., barcode scanners via ASCII/3964R), and an Ethernet port for engineering (PG/OP) and S7 communication. This reduces the need for external communication processors (CPs), lowering the total system cost.
- Innovation Point 3: Siemens S7-300 Compatibility: The module uses the same physical dimensions, mounting (DIN rail), and backplane bus (SPEED-Bus) as Siemens S7-300 modules. Crucially, it can be programmed with standard Siemens STEP 7 software (after installing a VIPA Hardware Support Package – HSP), allowing engineers to reuse existing S7-317 programs with minimal modification, providing a seamless migration path.
