Siemens Modbus Rs485 Wiring Diagram. The distances these signals are carried is greater due to differential signals. The et6415bnd ships with a usb to rs 485 adapter cable pictured below.
The rs485 technology option is provided as a plug in technology box. Figure 4 is a pin diagram for both 25 pin rs485 pinout half duplex and full duplex pinout connectors. As an add on option rs485 four wire interface may also be implemented.
Siri am having a weighing controller with rs 485 ascii i need to communicate with s7 1200 plc with cb1241 rs485 communicaion boardi have done earlier for modbus communication with two wire connection.
Locate this cable and remove it from the package. Upon establishing the connection successfully the holding registers show no valves even though the data traffic is active. 5202014 234 pm rate 0 chetan2490. The rs485 technology option is provided as a plug in technology box.