KL6781 | Bus Terminal, 1-channel communication interface, M-Bus, master
+24 V
KL6781 | Bus Terminal, 1-channel communication interface, M-Bus, master
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, so called standard loads, each with a current consumption of 1.5 mA can be connected.
Product status:
regular delivery
Product information
| Technical data | KL6781 |
|---|---|
| Technology | M-Bus |
| Data transfer standard | M-Bus physics |
| Data transfer channels | 1 |
| M-Bus devices | max. 40 standard loads, each with a current consumption of 1.5 mA |
| Data transfer rates | 300…9600 baud (default 2400 baud) |
| Bus access | master-slave mode (polling) |
| Cable length | max. 300 m |
| Current consumption 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 (-10%/+8%) |
| Input voltage | 24 V DC (-10%/+8%) |
| Special features | 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. rating/installation pos. | IP20/see documentation |
| Approvals/markings | CE, UL |
| Housing data | KL-12-8pin | KS-12-8pin |
|---|---|---|
| Design form | compact terminal housing with signal LEDs | terminal housing with pluggable wiring level |
| Material | polycarbonate | |
| Dimensions (W x H x D) | 12 mm x 100 mm x 68 mm | |
| Installation | on 35 mm DIN rail, conforming to EN 60715 with lock | |
| Side by side mounting by means of | double slot and key connection | |
| Marking | labeling of the BZxxx series | |
| Wiring | solid conductor (s), flexible conductor (st) and ferrule (f): spring actuation by screwdriver | |
| Connection cross-section | s*: 0.08…2.5 mm², st*: 0.08…2.5 mm², f*: 0.14…1.5 mm² | s*: 0.08…1.5 mm², st*: 0.08…1.5 mm², f*: 0.14…1.5 mm² |
| Connection cross-section AWG | s*: AWG28…14, st*: AWG28…14, f*: AWG26…16 | s*: AWG28…16, st*: AWG28…16, f*: AWG26…16 |
| Stripping length | 8…9 mm | 9…10 mm |
| Current load power contacts | Imax: 10 A | |
*s: solid wire; st: stranded wire; f: with ferrule
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