Manuel d'utilisation K-114 - Keller AG

System requirements for K-114_Config softwareProcessormin. Pentium 75 MHzScreen resolution min. 1024 x 768Main (working) memory min. 16 MB RAMFree hard disk space min. 20 MB(recommended)Internet connection recommended(required for support)Operating systemWindows XPWindows 7Factory configuration for the K-114Converter bus address 253(cannot be changed)Baud rate9600 baudEcho offoffBias networkoffTerminationoffHigh SpeedoffThese settings are generally recommended to ensuretroublefree operation of KELLER products.LED displayPowerK-114 USB to RS485 ConverterRS485BPowerRX/TX GNDRS485A+VCCUSBRS485Ready to operateFlashing rapidly, error ➞ U-USB < 4,5 VDC ➞ Connect power supply unitFlashing slowly, error ➞ U-UOUT < 11,2 VDC ➞ Connect power supply unitErrorwww.keller-druck.comExternal SupplyEchooffBiason15 VDC GNDTermination High Speedon onFunctional overview for the K-114U-USBRX/TXUSBEchoRS485BiasTerminationHigh SpeedShows the status of the transmission line (TX) and the reception line (RX).TX, sending data via the RS485 busRX, receiving data via the RS485 busBiasEcho offData sent from the PC (TX) aren’t received by the PC.Bias networkPrevents undefined bus levels when line drivers are inactive.➞ Greater immunity to interferenceTerminationPrevents reflections on the signal lines.– 20 –High SpeedDisables the RS485 driver’s slew-rate limitation.This allows communication at higher transmissionspeeds (> 250 kbps). Unlike high speed mode, thestandard mode (< 250 kbps) reduces reflections onthe signal lines and provides better EMC behaviour.KELLER devices operate at transmission speeds< 250 kbps, so this function is not activated ex factory.Echo offShows the status of the Echo off function.Echo off disabled (➞ echo switched on)Echo off enabled (➞ echo switched off)Bias onShows the status of the Bias on function.**Bias resistors (560 Ω) for RS485A and B are enabledNo bias resistors are connected– 21 –