Status LEDs

From Hardware Revision 3.0 onwards:

The status of the respective LEDs at the operator interfaces indicates the activity of the corresponding data lines.

These LEDs are located underneath the additional back lid that covers the interface circuit board. This additional back lid needs to be removed in order to see these LEDs.

Designation	Colour	Name	Description
D5	green	COM1 TxD	Activity on COM1: sending	LED flashing
D8	yellow	COM1 RxD	Activity on COM1: receiving	LED flashing
D7	green	COM2 TxD	Activity on COM2: sending	LED flashing
D6	yellow	COM2 RxD	Activity on COM2: receiving	LED flashing
D14	yellow	LINK ACT	Ethernet link established	LED always on (not for ET-3x6-A devices)
			Activity on Ethernet link	LED flashing
D15	green	HD	Access to system disk (Solid State, HDD)	LED flashing

In hazardous areas the device must not be operated

without its enclosure lid and back lid.

This means that the status LEDs can only be viewed during commissioning (without explosion hazard)

or in a safe area.