User manual

User manual Version 2.3

ABLELink

Serial-Ethernet Server

GW21W

2. Hardware Installation

 Prepare necessary cables, hub, power cord and RS232/RS485 connector.

 Place GW21W in the access point covered area.

 Connect a serial device to a serial port of GW21W, make sure the right connection of either RS-232 or

RS-485.

 Plug in DC-12V, the buzzer will beep and LED will blink if GW21W functions normally. Please refer to

Appendix A.4 to see all of LED messages.

 Use monitor.exe configuration utility in the product CD or diskette to diagnose GW21W. If it starts up

successfully, you are able to find the IP and MAC addresses of GW21W. You can change the network

parameters of GW21W to join your LAN by changing its IP address, gateway IP address and subnet

mask.

Note: If there are more than one access points, the access point’s ESSID must be the same.

2.1 Configuration

Atop GW21W Serial-Ethernet Server is shipped with default settings shown in the following table:

Property Default Value

IP Address 10.0.50.100

Gateway 10.0.0.254

Subnet Mask 255.255.0.0

User Name Admin

Password Null

COM 1 9600, None, 8, 1, No flow control, buffer disabled, packet delimiter timer 2ms

COM 2 9600, None, 8, 1, No flow control, buffer disabled, packet delimiter timer 2ms

Link 1 Type: TCP Server, Listen port 4660 Filter=0.0.0.0

Link 2 Type: TCP Server, Listen port 4661 Filter=0.0.0.0

SysName of SNMP Name

Syslocation of SNMP Location

SysContact of SNMP Contact

NOTE: Atop provides a reset button to restore system settings including IP address, gateway IP address

and subnet mask etc. to the defaults. Press and hold the reset button for 5 seconds till the server reboots.

2.2 Assigning a new IP Address by ARP command

The following example uses ARP to assign a static IP address of GW21W using its MAC address.

GW21W MAC address is printed on the label of the rear panel.

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