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USB-4761 User Manual 24
3.2.2 I/O Connector Signal Description
3.2.3 LED Indicator Status Description
The USB Module is equipped with a LED indicator to show the current
status of the device. When you plug the USB device into the USB port,
the LED indicator will blink five times and then stay lit to indicate that it
is on. Please refer to the following table for detailed LED indicator status
information.
Table 3.1: I/O Connector Signal Description
Signal Name Description
NO<0~7> Normally Open pin of relay output
COM<0~7> Common pin of relay output
NC<0~7> Normally Close pin of relay output
IDInA <n=0~7> Isolated digital input A
IDInB <n=0~7> Isolated digital input B
Table 3.2: LED Indicator Status Description
LED Status Description
ON Device ready for work
Off Device not ready to work
Slow Blinking (5 times) Device Initialization
Fast Blinking
(Depends on data transfer speed).
Device working