Owner's Manual

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Typical application
Overview of products
Product Connection Product number Products supported
K-114 Plug-in screw terminal 309010.0074 All digital KELLER products Series 3X, Series 4X, DCX*
K-114A Fischer plug 309010.0075 DCX-16 /-22-25PVDF / -38, LEO-Record, LEX1, ARC1
K-114B Binder female cable connector 309010.0076 Series 30X / 40X, LEO3, EV-120, dV22-PP, dV2-PS**, Castello**
K-114M M12 female cable connector 309010.0077 DCX-18 only (communication and charging cable)
Description
The K-114 communicates with the connected devices via an RS485 (half-duplex mode) bus. The devices connected
to the K-114 are supplied via the PC’s USB output or via an external power supply unit (K-114 socket).
KELLER products operate with fail-safe drivers that generate a logical «high» at the reception output in case of
short-circuited, open or terminated inputs, in order to avoid invalid signal statuses. KELLER products also have a
slew rate limitation which limits the edge steepness (i.e. slew rate) of the driver output. This prevents high-frequency
emissions from devices and data lines. Up to a maximum of 128 transmitters can be connected to this RS485
master bus.
* no voltage input
** requires additional cable option