Hello Farah,

I understand you're experiencing difficulties connecting your Engineering Station (ES) to the Automation System (AS) using the CP1623 communication processor in your PCS 7 setup. I'll provide some steps and suggestions to help you resolve this issue.

System Overview:

• ES (Engineering Station):Where you're trying to install and configure the CP1623.
• AS (Automation System):Redundant CPU410 setup with 2xCPU410-5H and 2xCP443-1 modules.
• OS Single Stations: Two operator stations in your setup.
• Communication Processor:CP1623 (6GK1162-3AA00).

Issue Summary:

• Difficulty connecting to WinCC using the CP1623.
• Error when downloading from NetPro:"The connection to the target module cannot be established."
• Attempts made using bothS7-ConnectionandS7-Connection-Fault-Tolerantwithout success.

Troubleshooting Steps:

Part01:

Kindly check with same subnet first and make sure that everything works fine.
Later you can use Ether net wide connection.

Part02:

1. Verify Hardware Installation:

   • Ensure the CP1623 is properly installed in the ES and recognized by the operating system.
   • Check Device Manager to confirm that the CP1623 drivers are correctly installed and there are no hardware conflicts.

2. Configure PG/PC Interface:

   • Open"Set PG/PC Interface"on the ES.
   • Select"TCP/IP -> CP1623 "or the appropriate entry for the CP1623.
   • Ensure this interface is set as the active one for communication.

3. Network Configuration:

   • Assign a unique IP address to the CP1623 that is within the same subnet as the AS and OS stations.
   • Verify subnet masks and gateway settings are consistent across devices.
   • Avoid IP address conflicts with other devices on the network.

4. NetPro Configuration:

   • In your PCS 7 project, open NetPro.
   • Ensure that the CP1623 is added under the ES station in the hardware configuration.
   • Define the necessary connections between the ES and AS:
     • For standard communication, useS7-Connection.
     • For redundant communication, useS7-Redundant Connection.
   • Check that the connection partners are correctly defined and that the connection IDs match.

5. Download Settings:

   • When downloading from NetPro, ensure you're using the correct interface:
     • In the download dialog, select the CP1623 as the interface for communication.
   • Try downloading to one AS CPU at a time to isolate any issues with redundancy.

6. Firewall and Antivirus:

   • Temporarily disable any firewall or antivirus software on the ES that might block network communication.
   • Add exceptions for Siemens software and ports if disabling is not an option.

7. Test Connectivity:

   • Use thePINGcommand in the Command Prompt to test communication between the ES and AS:
     • ping [AS IP address]
   • UseSIMATIC Managerdiagnostics to test the connection:
     • Right-click on the AS in the project tree and select"Online & Diagnostics".

8. Check the CP1623 Configuration:

   • Open theSIMATIC NCM PCsoftware to configure the CP1623 settings.
   • Ensure that the CP1623 is assigned to the correct project and network.
   • Verify that the module parameters match those in the hardware configuration.

9. Update Drivers and Software:

   • Ensure that the latest drivers for the CP1623 are installed.
   • Check for any available updates or service packs for PCS 7 that might address known issues.

10. Redundancy Considerations:

    • In a redundant AS setup, ensure that both CPUs and CPs are properly configured for redundancy.
    • Verify that the redundancy settings in the AS hardware configuration are correct.
    • Ensure that both CP443-1 modules in the AS are correctly set up for redundant communication.

11. Check for Duplicate Connections:

    • Ensure that there are no duplicate or conflicting connections defined in NetPro.
    • Remove any unnecessary connections and recompile the project.