
HT580 User Reference Guide Unitech Electronic CO. LTD
9
Communication Cradle LED Icons
This LED light (Red) shows the power status of the cradle itself. An Illuminated light indicates
the cradle is charging. To identify if the terminal is fully charged, it may be necessary to check the
terminal LCD.
1.9 Interface Port
The HT580 communicates via the RS232 communication port located on the bottom of the unit.
You can connect the HT580 directly via the communication cable to your PC’s RS232 port for data
transfer, or connect via the cradle.
1.10 Pin Assignment
1.8 HT580 Communication with the Host
Pin Name Pin Name
1 US-POWER 7 DSR
2 GND 8 GND
3 DC-IN 9 DTR
4 USB DP 10 TXD
5 CTS 11 RXD
6 RTS 12 USB DP
USB client 1.1 connection through cable
RS232/Modem Cradle Communication
This LED light (Green) shows transmission status of the cradle itself. An Illuminated light indicates
that data is in transmission.
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