Article image KL6021

Beckhoff KL6021

KL6021 | Serial interface RS422/RS485

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Description

The KL6021 serial interface allows devices with an RS422 or RS485 interface to be connected. The device connected to the terminal communicates with the automation device via the Bus Coupler. The active communication channel operates independently of the higher-level bus system in full or half duplex mode at up to 19,200 baud. The transmission of differential signals conforms to RS422 and guarantees high immunity to interference through electrically isolated signals.

Technical parameters

Technology: RS422/RS485
Data transfer channels: TxD and RxD, full/half duplex
Data transfer rates: 1200…19,200 baud; default: 9600 baud, 8 data bits, no parity and one stop bit
Bit transfer: with differential signal
Line impedance: 120 Ω
Cable length: approx. 1000 m twisted pair
Power supply: via the K-bus
Current consumption K-bus: typ. 65 mA
Current consumption power contacts: – (no power contacts)
Electrical isolation: 500 V (K-bus/signal voltage)
Data buffer: 128 bytes receive buffer, 16 bytes transmit buffer
Bit width in the process image: input/output: 3 x 8 bit user data, 1 x 8 bit control/status (up to 5 x 8 bit user data are possible)
Configuration: no address setting, configuration via Bus Coupler or controller
Special features: high interference immunity, electrically isolated signals
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
Pluggable wiring: for all KSxxxx Bus Terminals
Approvals/markings: CE, UL, ATEX
Ex-Marking: II 3 G Ex nA IIC T4 Gc

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