Keller K-114 BT - RS485 Interface; Product Overview; Pin Assignment for the Converters and Connections

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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 congu-
red on the master (PC) and on the K-114 BT.
Property Bluetooth / RS485 USB / internal controller (bus address 253) congurable
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 congured using the „K114Cong“ software.
Further connection parameters are possible for communicating via the USB interface with the RS485.
Property USB / RS485 congurable
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.