Serial Communication Status Indicators; Table 2.3:Definition Of Serial Com Status Indicators; Indicators For Expansion Slots - Advantech UNO-4683 User Manual

2.2.3 Serial Communication Status Indicators

Table 2.3: Definition of Serial COM Status Indicators
Item LED
COM/Rx
1
(Port 1,2)
COM/Tx
2
(Port 1,2)

2.2.4 Indicators for Expansion Slots

These LED indicators are defined by the UNOP series expansion
modules, please refer to the related document for the definition.
Status Description
Green Serial port data being received
Off No data being received
Orange Serial port data being transmitted
Off No data being transmitted
13 Chapter 2