LXM28A in Modbus

[Thca]

Hello,

We are using a Lexium LXM28A drive connected via Modbus RTU, which we need to control from a LabVIEW application using a Modbus library.

The goal is to perform simple motion sequences, specifically setting torque and velocity, as described in the provided technical documentation (see attached document).

• Register reading via Modbus is working correctly.

• However, writing to the registers consistently fails.

We’ve noticed that in SoMove, it is necessary to change the User Level to access certain parameters.

Could you please clarify which parameters or settings need to be modified or enabled to allow write access to the Modbus registers of the LXM28A?
(e.g. value to write to P2-30, protection to disable, passwords, required modes, etc.)

Thank you in advance for your assistance.

Best regards,