BK5151
![BK5151 BK5151](https://eshop.santavilte.lt/image/cache/catalog/beckhoff/beckhoff-plc-io-300x300.jpg)
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CANopen “Compact“ Bus Coupler for up to 64 Bus Terminals (255 with K-bus extension),
Bus connection: D-sub plug, 9-pin instead of open style connector