Application Scenarios
Consider a high-speed packaging line where the original Siemens S7-317 CPU struggles to keep up with the increasing logic complexity and communication load from multiple servo drives and vision inspection systems. The machine’s cycle time is creeping upward, directly impacting throughput. The engineering team needs a performance upgrade without a complete system overhaul.
Deploying the VIPA 317-2AJ12 as a drop-in replacement solves the bottleneck. Its SPEED7 core (bit instruction time ~0.01 µs) drastically reduces the PLC scan cycle, enabling faster response to sensor inputs and tighter synchronization of servo axes via the integrated PROFIBUS-DP master. The Ethernet port allows direct connection for programming and HMI communication without an additional CP card, addressing the core pain points of performance bottlenecks and network congestion . In one documented case, a packaging machine upgrade using this CPU reduced cycle times by approximately 15%, directly improving production throughput.
In a water treatment facility, the same 317-2AJ12 acts as the main process controller, utilizing its PtP RS485 serial port to communicate with legacy flow meters using the Modbus RTU protocol, while the Ethernet interface connects to the plant-wide SCADA system for data logging and remote monitoring . Its ability to handle complex logic and process closed-loop regulation, combined with support for up to 2048 timers and counters, makes it equally suitable for diverse process automation tasks .
Parameters
| Main Parameters | Value/Description |
|---|---|
| Product Model | 317-2AJ12 (CPU 317SE/DPM) |
| Manufacturer | VIPA GmbH (now Yaskawa) |
| Product Category | PLC Central Processing Unit (CPU) |
| Processor Technology | SPEED7 32-bit RISC with dedicated coprocessors |
| Work Memory | 2 MB integrated (expandable to 8 MB via MMC; 50% code / 50% data) |
| Load Memory | 8 MB integrated, expandable via MMC slot |
| Bit Instruction Speed | Approx. 25 ns (0.01 µs) |
| Word Instruction Speed | 0.01 µs |
| Floating-Point Speed | 0.06 µs |
| Integrated Interfaces | MPI, PROFIBUS-DP Master (12 Mbps), PtP RS485 (configurable), Ethernet PG/OP |
| PROFIBUS-DP Slaves | Up to 125 |
| SPEED-Bus | 32-bit parallel bus, up to 40 MByte/s, connects up to 16 SPEED-Bus modules |
| Timers / Counters | 2048 / 2048 |
| I/O Address Range | 8191 bytes |
| Real-Time Clock | Integrated, battery-buffered (≥6 weeks) |
| Power Supply | DC 24 V (20.4–28.8 V) |
| Power Consumption | 6.5 W |
| Operating Temperature | 0°C to +60°C |
| Programming Software | Siemens STEP 7 (with VIPA HSP), VIPA WinPLC7 |
| Lifecycle Status | Discontinued; replacement model 317-2AJ23 |
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