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Beckhoff Module EL6688
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Specifications
| Product series | EtherCAT Terminals |
| Channels | 1 |
| Communication | EtherCAT, PTP/IEEE 1588 |
| Connection method (signal) | RJ45 |
| Connection technology | - |
| Data transfer channels | - |
| Data transfer rates | 10/100 Mbit/s, IEEE 802.3u auto-negotiation, half or full duplex at 10 and 100 Mbit/s possible, automatic settings |
| Bit distortion | - |
| Interfaces | 10BASE-T/100BASE-TX Ethernet with 1 x RJ45 |
| Cable length | up to 100 m twisted pair |
| Power supply | via the E-bus |
| Electrical isolation | 500 V (E-bus/Ethernet) |
| Data buffer | - |
| Current consumption | typ. 310 mA (E-bus) |
| Weight | approx. 75 g |
| Operating/storage temperature | 0…+55 °C/-25…+85 °C |
| Relative humidity | 95 %, no condensation |
| Vibration/shock resistance | conforms to EN 60068-2-6/EN 60068-2-27 |
| EMC immunity/emission | conforms to EN 61000-6-2/EN 61000-6-4 |
| Protect. rating/installation pos. | IP20/variable |
| Approvals/markings | CE, UL, ATEX |
| Ex marking | II 3 G Ex nA IIC T4 Gc |
Number of Ethernet ports: 1
Why Global Buyers Choose O&Kmarts
- Access to a wide range of SKUs across multiple brands and series
- One RFQ connects you to 5,000+ global supplier quotes
- Better availability for urgent and hard-to-find parts
- Faster global delivery via FedEx / DHL / UPS
- Easier access to rare and high-value models
- Flexible sourcing for individual parts or complete solutions
- Lower MOQs and more adaptable buying options
- Multi-brand procurement in one order
- OEM replacement and alternative model solutions available
- Fewer intermediaries, ensuring more competitive pricing
Why Global Buyers Choose O&Kmarts
- Limited to fast-moving SKUs only
- Limited local market availability
- Inventory frequently fails to meet urgent demand
- Long replenishment cycles, often taking weeks
- Rarely stock high-value compressors (e.g. Copeland YHV119)
- Frequently require bundled purchases
- Rigid and difficult MOQ negotiations
- Limited brand selection
- Minimal or no customization capability
- Higher local distribution and markup costs
Top Questions from OKmarts Buyers
Q: What is your policy if an industrial part arrives physically damaged due to improper courier handling?
A: Buyers must inspect the outer packaging and internal items immediately upon delivery. If physical damage is discovered, document the condition with photos/videos and submit a claim to OKmarts within 48 hours of receipt so we can file an immediate report with the carrier and fast-track a replacement shipment.
Q: What happens if an item is damaged in production due to an installation error by our technicians? Will OKmarts help?
A: While standard warranties do not cover user-inflicted installation damage, we support your recovery velocity. In emergency situations where a commissioned part is accidentally fried or structurally damaged, we offer an expedited "Rapid Replacement" service, prioritizing your emergency order at a discounted technical assistance rate to minimize factory downtime.
Q: Does OKmarts support third-party escrow services or buyer protection payment channels?
A: Yes. For buyers seeking maximum transaction security outside traditional corporate bank wires, we support payments through verified platforms like PayPal and credit card networks that offer robust buyer dispute resolution and chargeback protection frameworks in case of fulfillment default.
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Q&A
Q: Do you offer bulk or wholesale discounts?
A: Yes, we offer bulk or wholesale discounts for certain products. If you are interested in making a bulk purchase, please contact our customer service team or our wholesale department for further assistance.
Q: Does the platform support cash on delivery?
A: Depending on the region and order amount, we may support cash on delivery. On the checkout page, if cash on delivery is available as one of the options, you can choose this payment method to complete the order.
Q: How can I track my order?
A: Once your order is shipped, you will receive a confirmation email with tracking information. You can use this information to track your order through the logistics provider's website.







