| Problem | Likely Cause | Solution | | :--- | :--- | :--- | | | Windows Firewall blocking broadcast | Disable firewall temporarily or add Wago I/O Check 3 to allowed apps. | | | PC and coupler on different subnets | Set your PC to a static IP in the same range (e.g., coupler 192.168.1.100 → PC 192.168.1.10). | | Red module icon in software | Module missing 24V power supply | Check the jumper at the power supply module. | | | Module damaged or mismatched | Try removing the module and re-inserting (with power off). | | Cannot force outputs | Outputs are controlled by a running PLC program | Set the PLC to STOP mode or disable outputs in your controller before forcing. | | Analog values display "32767" (or -32768) | Sensor not connected or wiring broken | Check for open circuit or short to ground. | | Installation fails (error code 0x80070643) | Missing Visual C++ Redistributables | Download and install "Microsoft Visual C++ 2015-2022 Redistributable" first. |
: Manually trigger outputs and adjust individual parameters (like baud rate or sensor types) for testing purposes. Software Wago I O Check 3 Download
Searching for is more than just finding an installer—it’s about gaining a critical edge in industrial diagnostics. This free, powerful utility transforms hours of multimeter probing into minutes of intuitive point-and-click verification. | Problem | Likely Cause | Solution |
Shows the complete node structure: Coupler → Power Supply → Digital Inputs → Analog Outputs → End Module. Each module shows its order number (e.g., 750-430) and status (green = OK, red = error). | | | Module damaged or mismatched |
If a PLC program is already running on the controller, I/O Check may be restricted to "Read-Only." You might need to stop the PLC application to gain write access to the outputs.
software. You cannot download it directly without a valid proof of purchase. Purchase a License
: Print configuration lists and graphical displays for project documentation. System Requirements