Designed to facilitate seamless integration of utility metering devices, the Beckhoff KL6781 operates as a single-channel M-Bus master terminal within the standard Beckhoff Bus Terminal system. This module enables direct, bidirectional communication with up to 40 standard M-Bus loads, such as heat, water, electricity, or gas meters, over a single bus segment without requiring external level converters. Operating in master-slave mode via polling, the KL6781 transmits data standard M-Bus physics, enabling consolidated energy management and resource tracking directly from the TwinCAT control environment.
The terminal features a 24-byte process image for inputs and outputs, allowing robust data transfer rates ranging from 300 to 9600 baud. Integration is streamlined through the TwinCAT PLC M-Bus library, which provides specialized function blocks for rapid field configuration. With built-in short-circuit protection and 500 V electrical isolation between the K-bus and the M-Bus physics, the module ensures robust operation and system-wide protection against electrical faults in harsh industrial or commercial environments.
| Administrative | Manufacturer | Beckhoff Automation |
| Part Number/Model | KL6781 | |
| Product Series | Bus Terminal System (KL Series) | |
| Communication & Bus | Technology | M-Bus |
| Data Transfer Standard | M-Bus physics | |
| Number of Channels | 1 | |
| Maximum Connected Loads | 40 standard loads (1.5 mA each) | |
| Data Transfer Rates | 300 to 9600 baud (default: 2400 baud) | |
| Bus Access | Master-slave mode (polling) | |
| Electrical Data | Nominal Voltage | 24 V DC (-10% / +8%) |
| Current Consumption (K-bus) | Typically 65 mA | |
| Current Consumption (Power Contacts) | Maximum 250 mA | |
| Protection & Safety | Short-Circuit Protection | Yes |
| Electrical Isolation | 500 V (K-bus / M-Bus) | |
| Process Image Bit Width | 24 bytes input / 24 bytes output | |
| Environmental & Mechanical | Weight | Approx. 60 g | Operating Temperature | 0 to 55 degC |
| Storage Temperature | -25 to 85 degC | |
| Relative Humidity | 95%, non-condensing | |
| Standards & Approvals | 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 | |
| Certifications & Marks | CE, UL |
| Terminal Point | Signal/Function | Description |
|---|---|---|
| 1 | M+ | M-Bus Connection (+) |
| 2 | Shield | Shielding / Functional Ground |
| 3 | +24 V DC | External Power Supply (+) |
| 5 | M- | M-Bus Connection (-) |
| 7 | 0 V DC | External Power Supply (0 V) |
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Returns & Warranty
Manufacturer: BECKHOFF
Product No.: KL6781
Country of origin:Germany
Product Type: Bus Terminals
Payment: T/T, Western Union
Weight: 60g
Shipping port: Xiamen
Warranty: 12 months
Designed to facilitate seamless integration of utility metering devices, the Beckhoff KL6781 operates as a single-channel M-Bus master terminal within the standard Beckhoff Bus Terminal system. This module enables direct, bidirectional communication with up to 40 standard M-Bus loads, such as heat, water, electricity, or gas meters, over a single bus segment without requiring external level converters. Operating in master-slave mode via polling, the KL6781 transmits data standard M-Bus physics, enabling consolidated energy management and resource tracking directly from the TwinCAT control environment.
The terminal features a 24-byte process image for inputs and outputs, allowing robust data transfer rates ranging from 300 to 9600 baud. Integration is streamlined through the TwinCAT PLC M-Bus library, which provides specialized function blocks for rapid field configuration. With built-in short-circuit protection and 500 V electrical isolation between the K-bus and the M-Bus physics, the module ensures robust operation and system-wide protection against electrical faults in harsh industrial or commercial environments.
| Administrative | Manufacturer | Beckhoff Automation |
| Part Number/Model | KL6781 | |
| Product Series | Bus Terminal System (KL Series) | |
| Communication & Bus | Technology | M-Bus |
| Data Transfer Standard | M-Bus physics | |
| Number of Channels | 1 | |
| Maximum Connected Loads | 40 standard loads (1.5 mA each) | |
| Data Transfer Rates | 300 to 9600 baud (default: 2400 baud) | |
| Bus Access | Master-slave mode (polling) | |
| Electrical Data | Nominal Voltage | 24 V DC (-10% / +8%) |
| Current Consumption (K-bus) | Typically 65 mA | |
| Current Consumption (Power Contacts) | Maximum 250 mA | |
| Protection & Safety | Short-Circuit Protection | Yes |
| Electrical Isolation | 500 V (K-bus / M-Bus) | |
| Process Image Bit Width | 24 bytes input / 24 bytes output | |
| Environmental & Mechanical | Weight | Approx. 60 g | Operating Temperature | 0 to 55 degC |
| Storage Temperature | -25 to 85 degC | |
| Relative Humidity | 95%, non-condensing | |
| Standards & Approvals | 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 | |
| Certifications & Marks | CE, UL |
| Terminal Point | Signal/Function | Description |
|---|---|---|
| 1 | M+ | M-Bus Connection (+) |
| 2 | Shield | Shielding / Functional Ground |
| 3 | +24 V DC | External Power Supply (+) |
| 5 | M- | M-Bus Connection (-) |
| 7 | 0 V DC | External Power Supply (0 V) |
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
Germany
|
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