Use the Kernel to Commission a System

Runtime > Debug Runtime > The Kernel > Use the Kernel to Commission a System

All systems in Citect SCADA start smoothly. When commissioning a system, check the Kernel. If any element does not initialize properly or reports errors at startup, your Citect SCADA system is not working correctly and requires investigation.

Common causes of startup errors are:

Incorrect computer setup (usually solved by the Setup Wizard).
Networking errors or bad hardware.
Communication errors (usually just a configuration issue).

Use the Main window to check that your I/O devices come online correctly when starting. First the ports need to initialize, then the I/O device itself will come online. When a device does not initialize as expected, Citect SCADA displays a message such as "PLC not responding", "I/O Device Offline" or similar.

Some I/O devices might take two attempts to come online. If so, Citect SCADA waits (usually 30 seconds) and tries again. If the I/O device does not come online after the second attempt, check your configuration (at both ends) and cabling.

Note: The Kernel continues to report changes in the status of I/O devices to the Main window. This information might also be reported as alarms to the Hardware Alarms page.