Answer
Nov 02, 2025 - 11:38 AM
To change the communication mode from Analog to Modbus or vice versa on the PSC6194 Controller, follow these steps as outlined in the user manual:
1. **Analog to Modbus Configuration:**
- Open communication using FlowDDE.
- Navigate to the FLOW-BUS tab or press F6.
- Select parameters to view simultaneously: Parameter 7 (InitReset) and Parameter 12 (IO Status).
- Set InitReset to 64 (unlocked).
- Read the IO Status parameter.
- Subtract 64 from the read value to get the new parameter value (either 15 or 11).
- Write the new value to the IO Status parameter.
- Set InitReset to 82 (locked).
- Restart the Bronkhorst instrument.
2. **Modbus to Analog Configuration:**
- Open communication using FlowDDE.
- Navigate to the FLOW-BUS tab or press F6.
- Select parameters to view simultaneously: Parameter 7 (InitReset) and Parameter 12 (IO Status).
- Set InitReset to 64 (unlocked).
- Read the IO Status parameter.
- Add 64 to the read value to get the new parameter value (e.g., 79).
- Write the new value to the IO Status parameter.
- Set InitReset to 82 (locked).
- Restart the Bronkhorst instrument.
Remember, the InitReset parameter must be unlocked/locked for the new Control Mode to remain after the instrument is restarted.
If you encounter any difficulties or require further assistance, refer to the FlowDDE Manual available at the provided link in the user manual.
User Manual Q&A

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