Solar Lattice

Tool

RS-485 to USB converter

ID
tool:rs485-converter
IRI
https://solarlattice.org/kb/tool/rs485-converter
Status
active
Also known as
USB-RS485 adapter, serial converter, RS485 to USB adapter, USB-485 converter, USB to RS485 interface converter, signal converter
Category
Instruments
Tool kind
instrument

An RS-485 to USB converter connects a computer's USB port to an RS-485 serial line. It converts signals between the field device, such as a PV inverter, and the computer. The Conext CL125 EasyConfig tool lists an RS485 to USB adapter, part TCSMCNAM3M002P or equivalent, as its serial port requirement. For the CL125 inverter, Schneider Electric also points to third-party converters such as the Moxa UPort 1130I. On FIMER TRIO inverters, a PC can collect operating data from the RS-485 line through the PVI-USB-RS485_232 signal converter. IMT Solar Si irradiance sensors are configured with the Si Modbus Configurator software. This needs a computer, a voltage supply and a USB to RS485 converter, for example an ICPCON I-7561 or a DIGITUS DA-70157. For BACnet troubleshooting, a USB-485 converter can capture bus traffic for a tool such as BACspy or Hyperterminal. Use shielded, grounded twisted-pair cable for the RS-485 run. Set each inverter's termination resistor switch according to its position on the bus. Once the converter is connected, confirm that the devices are communicating, then set the communication parameters, for example in the eConfigure CL125 app.

<!-- review notes

Claims

uses_protocol

c1 verified · fact RS-485

Converts signals between an RS-485 device such as an inverter or sensor and a computer's USB port.

verified by: review-workflowverified on: 2026-10-24

Data