User manual

USB-4600 Series User Manual 18
4.1 Pin Assignment
The RS-232 mode pin assignment is as following:
The RS-485/422 mode pin assignment is as following:
4.2 LED Status
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.
Pin
1 234 5 6 7 8
RS-232
DCD RX TX DTR GND DSR RTS CTS
Pin
123 4
RS-422
TX- TX+ RX+ RX-
RS-485
Data- Data+ N/A N/A
Table 4.1: LED Indicator Status Description
LED Status Description
USB Indicator
On Device ready for work
Off Device not ready for work
TX
On Device ready for work
Off Device not ready for work
Slow Blinking Device initialization
Fast Blinking Device working
RX
On Device ready for work
Off Device not ready for work
Slow Blinking Device initialization
Fast Blinking Device working