SINAMICS V20 RS485 bus connection Contents 50 pieces Size: 34x137x6 (WxHxD) Terminating resistor SINAMICS RS485 Terminating resistor for SINAMICS V20. An RS485 terminating resistor is used to terminate the bus for RS485 communication between the SINAMICS V20 and the SIEMENS controller. It can be ordered in quantities of 50 pieces. SINAMICS - simply my drive.