Sinamics v20 modbus address

Hello everyone,

  1. Data sheet for SINAMICS V20 MLFB-Ordering data Figure similar Mechanical data 107.8 mm ( 4.24 in ) Degree of protection IP20 / UL open type 68.0 mm ( 2.68 in ) Height Net weight 0.60 kg ( 1.32 lb ) Depth Size Width 142.0 mm ( 5.59 in ) FSAA Unshielded 50 m (164 ft) Max. Motor cable length Connections Shielded 25 m (82 ft).
  2. An experiment of basic SINAMICS V20 VFD Control via Modbus RTU communication.
  3. The compact SINAMICS V20 is the frequency converter for simple motion sequences. It is characterized by its short commissioning times, easy handling, and energy-saving functions. The converter with its nine sizes covers the power range from 0.12 kW to 30 kW.

I'm trying to use an arduino Duamelinove to comunicate with a Sinamics V20 inverter via RS485. I have a shield to convert the RS232 from the arduino to the RS485 from the inverter. I also have a RS485/USB adapter to monitor the communication from a computer.

I've loaded the SimpleModbusMaster library example on the arduino, and I'm getting transmission errors on the computer monitor (values different from what was transmited). The inverter receives the signal, but it returns a 'parity error'.

Sinamics V20 Modbus Register

Sinamics V20 Modbus Registered

I also tried communicating the inverter with the computer, without the arduino, using a Modbus Master demo and, this time, it returns a 'character structure error'.

Sinamics V20 Modbus Register Code

Sinamics v20 parameter setting

SINAMICS V20 Inverter Getting Started, 07/2012, A5E03728127 3 Preface Purpose of this manual This manual provides you with information about the proper installation, quick commissioning and basic operation of SINAMICS V20 inverters. SINAMICS V20 user documentation components Document Product Language Inverter system. The SINAMICS V20 inverter has been designed to be protected by fuses; however, as the inverter can cause a DC current in the protective earthing conductor, if a Residual Current Device (RCD) or Residual Current Monitoring Device (RCM) is to be used upstream in the supply, the device must be of type B.

Has anyone ever tryied to do something similiar before? I'm not sure if this is even possible as everything I find online mention only communication between Siemens Inverters with Siemens PLCs.

Sinamics V20 Modbus Register Product

Modbus register map

Modbus Register Map

Any thoughts would be appreciated.