HF HF2211A - RS232 Interface; Figure 4. RS232 Pin Defination(Male;Needle Type); Table 2. HF2211 A Interface Definition; Table 3. RS232 Interface

HF2211A Serial Server Device User Manual
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Table 2. HF2211A Interface Definition
Function
Name
Description
External
Interface
RJ45 Ethernet
10/100M Ethernet
Default is WAN function in AP mode (Can be
configured to LAN Function), connect to router
LAN port for network access.
In STA mode, it works in LAN function.
SMA
Antenna SMA Interface
RS232
RS232 Communication
RS485/RS422
RS485/RS422 Communicaton
Earth
Protect Earth
DC Input
DC Power 5~36V
LED
Indicator
Power
Internal Power Supply Indicator
On
：
Power is OK
Off：Power is NG
Link
Network Connection Indicator
On: Include the following condition.
 Ethernt 2 connection OK
 Wi-Fi STA connect to AP
 Wi-Fi AP being connected by other STA
device
Off: No network connection
Active
Data transfer Indicator
On：Data is transfering.
Off：No data transfer
Button
Reload
Restore to factory setting
Long press this button for 4 seconds and loose it
to restore parameters to factory setting.
Switch
Protect
Device parameter protect
On: Enable protect, working parameter can not be
modified.
Off: Disable protect.
2.2. RS232 Interface
Device serial port is male(needle), RS232 voltage level(can connect to PC directly), Pin Order is
cosistent with PC COM port. Use cross Cable connected with PC(2-3 cross, 7-8 cross, 5-5 direct, 7-8
no connection), see the following table for pin defination.
Figure 4. RS232 Pin Defination(Male/Needle Type)
Table 3. RS232 Interface
Pin Number
Name
Description