ABB AC 800F

7 Functional Description of the Fieldbus Modules
7-21
Description of the status indicators
State LED
Fieldbus module FI 820F has a multicolor LED which indicates the current module
state. This LED is the top one, labeled State, indicating the following:
• Off No voltage applied, module is separated.
• Green Module is active and operating properly.
• Orange Module has been identified by the AC 800F, but has not yet been
activated.
• Red Module is powered, but has not yet been identified, or an error
occurred.
RxD0 LED
Single color green LED, indicates the receive status of the first channel.
• Off Channel does not receive any data.
• Green Channel is receiving data.
TxD0 LED
Single color green LED, indicates the transmit state of the first channel.
• Off Channel does not transmit any data.
• Green Channel is transmitting data.
RxD1 LED
Single color green LED, indicates the receive status of the second channel.
• Off Channel does not receive any data.
• Green Channel is receiving data.
TxD1 LED
Single color green LED, indicates the transmit state of the second channel.
• Off Channel does not transmit any data.
• Green Channel is transmitting data.