KELLER products use fail-safe RS485 drivers which output a valid signal even with an undefined level.
For this reason, it is not mandatory to enable this function.
Termination on
Termination resistor (120 Ω) connected**
Termination resistor not connected
High Speed
Shows the status of the High speed function.**
High speed enabled
High speed disabled
**IMPORTANT: On battery-powered devices, this function can lead to operating errors
➞
Recommendation: do not enable the function.
RoHS
This product is compliant with EC directive 2002/95/EC on the Restriction of the Use of Certain
Hazardous Substances in Electrical and Electronic Equipment (RoHS).
Disposal
This symbol on the product or the product documentation indicates that the product must not be
disposed of as normal household waste at the end of its useful life. In order to prevent potential
damage to the environment or to health as a result of uncontrolled waste disposal, this product
must be separated from other waste and must be correctly recycled in order to ensure the
sustainable use of the raw materials.
– 22 –
Help with fault analysis
off / red
green, flashing
LED
POWER
LED off:
➞
check connection cable
and supply
LED red:
➞
check / install
software driver
Supply voltage below
minimum
➞
external supply via
power supply unit
➞
check power consump-
tion by consumers
LED
RX / TX
LED off
continuously lit
Comport is already in use
➞
incorrect Comport
number selected
(change selection)
➞
another software is using
the Comport, close all
software programs
➞
check wiring of
end consumers
Bus error
➞
check wiring of end
consumers
➞
disconnect all devices
connected to the K-114
➞
check RS485 voltage
level, enable termination
or bias function as
appropriate
– check baud rate settings / device address
– reset K-114 to factory settings
– request support
flickering
green
– 23 –