"IEC" status LED

The following table describes the display functions of the "IEC" LED:

Status

Meaning

Measure

Off

No IEC program is loaded.

Load an IEC program into the device.

Orange, flashing at 0.5 Hz

Program has stopped running.

Start the IEC program.

Red, flashing at 0.5 Hz

The IEC program is faulty.

Check and correct the IEC program.

Green, flashing at 0.5 Hz

The IEC program is running
properly.