Wireless data exchange terminal KM6551
Status LEDs
Top view
Radio connection
Function and
address selector

KM6551 | Wireless data exchange terminal

The KM6551 terminal module is a data exchange unit for radio technology. The KM module is based on the IEEE802.15.4 standard. Data are exchanged or transferred via radio between two stand-alone control units, independent of the higher-level fieldbus. The outdoor range between two KM6551 units can be up to 300 m.

The data exchange module has a reverse SMA plug (Straight Medium Adapter) for connection of various radio antennas. The free choice of antenna enables adaptation to the respective environment. Status and data exchange are displayed via LEDs, thereby offering fast and simple diagnostics. A library is available for using the KM6551 module with TwinCAT.

Technical data KM6551
Technology wireless data exchange
Frequency band 2.4 GHz
Data transfer rates 250 kbit
Protocol IEEE 802.15.4
Antenna connection reverse SMA plug (RP-SMA)
Power supply via the K-bus
Current consumption K-bus typ. 135 mA
Bit width in the process image 12 byte input/output (10 byte user data, 2 byte control/status)
Configuration no configuration required
Weight approx. 85 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/EN 300 440-02
Protect. class/installation pos. IP 20/variable
ZS6100-0900 directional antenna 9 dBi, matching cables: ZK6000-0102-0020/-0040 (cable not included in the scope of supply of the antenna, only one cable per antenna possible)
ZS6201-0410 rod antenna 4 dBi, 1 m cable with reverse SMA socket (included in the scope of supply of the antenna, extension not possible)
ZS6201-0500 rod antenna 5 dBi, direct connection, reverse SMA socket (antenna cannot be combined with a cable)
ZK6000-0102-0020 coaxial cable, 50 Ω impedance, with attached connectors (SMA plug and reverse SMA socket), black, 200 cm
ZK6000-0102-0040 coaxial cable, 50 Ω impedance, with attached connectors (SMA plug and reverse SMA socket), black, 400 cm
Product announcement
discontinued (no alternative product available )