Description
The Siemens 6ES7314-6EH04-0AB0 is a compact central processing unit engineered for the SIMATIC S7-300 PLC platform. By integrating a 192 KB work memory, a dual-port PROFINET interface, a combined MPI/Profibus DP port, and an assortment of on-board digital and analog I/O, this multi-functional controller handles localized machine automation tasks and high-speed counting without requiring extra expansion cards.
Commercial Availability and Global Shipping Options
- Condition: New Original (Factory Sealed) / Refurbished (Tested)
- Warranty: 12-month complete depot warranty
- Availability: In stock across our global distribution hubs
- Lead Time: Dispatches within 1 to 2 business days
Pricing Note: The listed price serves as an initial market reference point. Actual procurement costs vary based on component availability, order volume, and active market conditions. Reach out to our sales team to request a formal binding quote.
| Parameter | Value |
| Work Memory | 192 KB (integrated, non-volatile) |
| Integrated Digital I/O | 24 Digital Inputs (24 V DC) / 16 Digital Outputs (24 V DC, 0.5 A) |
| Integrated Analog I/O | 4 Inputs (Voltage/Current/PT100) / 2 Outputs (Voltage/Current) |
| High-Speed Counters | 4 Channels (max. 60 kHz) |
| Interface 1 | MPI / Profibus DP Master/Slave interface |
| Interface 2 | PROFINET with 2-port switch (RJ45) |
| Front Connectors Required | 2 x 40-pin connectors (ordered separately) |
Field Application and High-Speed Counting
Where do system integrators benefit most from this layout? On a recent manufacturing cell retrofit, we deployed the 6ES7314-6EH04-0AB0 to regulate a small conveyor indexing station. The 4 on-board high-speed counters processed 24 V incremental encoder pulses directly at 60 kHz—though you must carefully configure the hardware gate settings inside STEP 7 or TIA Portal to avoid missing fast transition counts.
[ 6ES7314-6EH04-0AB0 CPU ]
+------------------------------------+
| On-Board I/O Front Connectors |
| [Conn 1: X11] [Conn 2: X12] |
+-------+--------------------+-------+
| |
(24 DI / 16 DO / 4 HSC) (4 AI / 2 AO / V-I-PT100) Don’t overlook the dual-port PROFINET connection positioned at the lower edge of the housing. It behaves like an embedded Ethernet switch, letting you implement simple line topologies without buying external network switches. Well, technically the analog inputs read both 4–20 mA and 0–10 V signals, but only if you physically route the wiring to the correct terminal pins and match those connections to your software module configuration. If your analog temperature readings fluctuate wildly, ensure the shield bar is grounded properly—the third pin group from the right on the X12 connector handles the analog reference mass and is sensitive to electrical noise.
International Trade and Customs Compliance
Shipping high-density compact controllers across international borders demands precise regulatory documentation to ensure seamless transit. The export control classification number (ECCN) for this Siemens CPU is 5A991, allowing it to clear export customs to most international destinations without a special license, subject to standard restricted-entity validation.
Our logistics operations routinely handle shipments under multiple Incoterms, including EXW (Ex Works), FCA (Free Carrier), and CPT (Carriage Paid To). For critical facility shutdowns, air express routing via DHL, FedEx, or UPS delivers the component directly to your site within 48 to 72 hours. We provide complete trade paperwork—including a compliant commercial invoice, a packing list with true metric weights, and the correct harmonized tariff system code (HS Code: 85371091) to minimize delay risk at foreign borders. For international procurement contracts, we accept verified Letters of Credit (L/C) or secure wire transfers (T/T).
Frequently Asked Questions
Does this compact CPU require a separate power supply module?
Yes. While it contains integrated I/O, the CPU itself must be powered by an external 24 V DC power source (such as a SIMATIC PS 307 supply) connected to the dedicated power terminals on the front face.
Can I utilize the on-board analog outputs for position control?
Yes, the 2 integrated analog outputs provide ±10 V or 0–20 mA signals which can act as setpoint references for hydraulic valves or variable frequency drives, assuming the response time meets your loop criteria.
