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Beckhoff
KL6781
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Beckhoff KL6781
KL6781 | M-Bus master terminal
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Description
The KL6781 M-Bus master terminal enables the direct connection of M-Bus devices. The M-Bus (Meter Bus) is a fieldbus for the acquisition of consumption data from electricity, water, gas or energy meters. The KL6781 does not contain the M-Bus protocol; instead, it converts the data present on the terminal bus into M-Bus compliant physics. 24 byte data are available on the K-bus for this. In conjunction with the TwinCAT M-Bus library, it is possible to work without an external M-Bus gateway, i.e. the M-Bus devices can be connected directly to the KL6781. With a total cable length of 300 m, up to 40 M-Bus devices (each with a current consumption of 1.5 mA) can be connected.
Technical parameters
| Technology: | M-Bus |
| Data transfer standard: | M-Bus physics |
| Data transfer channels: | 1 |
| M-Bus devices: | max. 40 each with a current consumption of 1.5 mA |
| Data transfer rates: | 300…9,600 baud (default 2,400 baud) |
| Bus access: | master-slave mode (polling) |
| Cable length: | max. 300 m |
| Current consumpt. K-bus: | typ. 65 mA |
| Current consumption power contacts: | max. 250 mA |
| Short-circuit-proof: | yes |
| Electrical isolation: | 500 V (K-bus/M-Bus) |
| Bit width in the process image: | input/output: 24 bytes |
| Configuration: | TwinCAT (M-Bus function blocks) |
| Nominal voltage: | 24 V DC (-15 %/+20 %) |
| Input voltage: | 24 V DC (-15 %/+20 %) |
| Special features: | connection of up to 40 M-Bus devices; TwinCAT library: TwinCAT PLC M-Bus |
| Weight: | approx. 60 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. class/installation pos.: | IP 20/variable |
| Approvals: | CE, UL |
Logistic parameters
| ECCN: | |
| Country of Origin: | |
| EAN: | |
| Weight: | 0.00 kg |
| Length: | 0.00 m |
| Width: | 0.00 m |
| Height: | 0.00 m |