Hi,
I need assistance with retrieving alarm bits from the slave PLC S7-300 for the master device. Could you please clarify the following:

1. In which data block should I add the alarm data? Can I use the instance data block of MODB_341 for this purpose, or should I create a separate data block (source DB)?
2. Where should I specify the data block number that contains the data for Modbus communication in TIA Portal?

Note:
Communication - Modbus RTU Slave, RS 485 Interface
Hardware - In slave side ( S7-300 + CP-341 + Slave Dongle )
Software - TIA portal V13.

 

TIA Portal (Totally Integrated Automation Portal) is Siemens' all-in-one software platform for programming, configuring, and managing industrial automation systems. It streamlines engineering tasks like PLC programming and HMI design, improving efficiency and collaboration.