Keller K-114 BT, Operating Instructions Manual, Page: 5 / 10

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Product overview
Product Connection Product number Plug compatible with
K-114 BT Screw terminals
(MC 1,5 / 6-ST-3,81)
309010.0119 all digital KELLER products with cable outlet,
series 3X, series 4X, DCX
K-114 BT A Fischer plug
(S 103 A054-130 [male])
309010.0101 DCX-16 /-22-25 PVDF / -38, LEO Record,
LEX 1, GSM-2
K-114 BT B Binder cable connector
(series 680 [female] 5-pole)
309010.0120 Series 30X / 40X, LEO 3, dV-22 PP, dV-2 PS*,
Castello*
*Requires additional cable option
Pin assignment for the converters and connections
+Vcc RS GND RS
485-A 485-B
U-IN Erde /
Schirm
K-114 BT
Pluggable screw terminal
MC 1,5 / 6-ST-3,81
K-114 BT A
Fischer connector
S 103 A054-130 (male)
K-114 BT B
Binder cable connector
Series 680 (female) 5-pole
3: +Vcc
4: RS485-A
5: RS485-B
2: +U-IN
1: GND
2: +U-IN
3: +Vcc
4: RS485-A
1: GND
5: RS485-B
Earth/shield
Earth/shield
RS485 interface
For Bluetooth communication and the internal controller (bus address: 253), the converter supports the baud rate of
9600 baud (default) or 115200 baud, 8 data bits, 1 stop bit and no parity. This transmission speed must be configu-
red on the master (PC) and on the K-114 BT.
Property Bluetooth / RS485 USB / internal controller (bus address 253) configurable
Baud rate 9600 (default) / 115200 baud 9600 (default) / 115200 baud Yes
Data bits 8 8 No
Stop bits 1 1 No
Parity no parity no parity No
The desired baud rate can be configured using the „K114Config“ software.
Further connection parameters are possible for communicating via the USB interface with the RS485.
Property USB / RS485 configurable
Baud rate freely selectable, up to 250 kbps Yes
Data bits 7,8 Yes
Stop bits 1,2 Yes
Parity Odd, even, mark, space, no parity Yes
The K-114 BT converter communicates with the connected devices via an RS485 (half-duplex mode) bus. The
internal battery supplies power to the devices connected to the K-114 BT. KELLER products operate with fail-safe
drivers, which output a logical high at the receiver outlet in the event of short-circuited, open or non-terminated
inputs in order to avoid invalid signal states. KELLER products also feature slew rate limitation, which limits the edge
steepness of the driver output. This prevents high-frequency emissions from devices and data lines. A maximum of
128 bus devices can be connected to this RS485 master.