Dr robot Wfs802g User manual

WFS802g WiFi 802.11 Serial Module with Antenna

Module User Manual

Version: 1.0.5

August 2008

Table of Contents

I. Introduction..................................................................................................................................... 2

II. Operations....................................................................................................................................... 2

II.1.

Protocol Support ....................................................................................................................................2

III. Connections .................................................................................................................................... 2

III.1.

Board Structure ......................................................................................................................................2

III.2.

Connector Description...........................................................................................................................3

IV. Specifications ................................................................................................................................. 4

V. Configuration via Serial Mode or Telnet Port ............................................................................ 5

V.1.

Accessing Setup Mode

...........................................................................................................................5

V.1.1. Telnet Access .....................................................................................................................................5

V.1.2. Serial Port Access .............................................................................................................................6

V.2.

Server Configuration

..............................................................................................................................8

V.3.

Channel 1 and Channel 2 Configuration

..............................................................................................9

V.4.

Email Configuration

..............................................................................................................................20

V.5.

WLAN Settings

.....................................................................................................................................20

V.6.

Expert Settings

......................................................................................................................................21

V.7.

Security Settings

.................................................................................................................................. 22

V.8.

Factory Defaults

................................................................................................................................... 23

V.9.

Exit Configuration Mode

..................................................................................................................... 25

VI.

Configuration

using

Web-Manager

..........................................................................................26

VI.1.

Accessing WFS802g using Web-Manager

.................................................................................... 26

VI.2.

Network Configuration

........................................................................................................................ 27

VI.2.1. Automatic IP Address Configuration ......................................................................................... 27

VI.2.2. Static IP Address Configuration.................................................................................................. 28

VI.3.

Server Configuration

........................................................................................................................... 28

VI.4.

Host List Configuration

....................................................................................................................... 29

VI.5.

Channel 1 and Channel 2 Configuration

...........................................................................................30

VI.5.1. Serial Settings................................................................................................................................. 30

VI.5.2. Connection Settings - TCP............................................................................................................ 31

VI.5.3. Connection Settings - UDP...........................................................................................................33

VI.6.

WLAN Configuration

........................................................................................................................... 34

VI.7.

OEM Pin Configuration

....................................................................................................................... 36

VI.8.

Updating Settings

.................................................................................................................................37

I. Introduction

The WFS802g WiFi (802.11g) serial module is the most compact, integrated solution available to add 802.11g

wireless networking to your robots with a serial interface.

To enable access to a local network or the internet, the WFS802g integrates a fully developed TCP/IP network

stack and OS. The WFS802g also includes an embedded web server that can be used to remotely configure,

monitor, or troubleshoot the attached device.

The WFS802g is the most compact, integrated solution available to add 802.11g wireless networking to any

device with a serial interface. Using our highly integrated hardware and software platform, you will add to your

bottom line by significantly reducing product development time, risk, and cost.

Features

.Serial to 802.11g conversion

.Dual serial ports up to 921.6kbps per port

.Integrated industry standard 802.11g wireless interface

.128bit WEP Encryption for security

.Connect any serial device to a wireless network

.Stable, field proven TCP/IP protocol suite and Web-based application framework

.Easy configuration through a web interface

.Embedded web server

.High performance throughput

Applications

.Robotic systems: both run-time and development-stage communication

.General-purpose wireless data communication

II. Operations

II.1.

Protocol Support

The WFS802g uses the widely accepted 802.11g protocol to connect to a wireless access point or an ad hoc

network. It uses the Transmission Control Protocol (TCP) to ensure that no data is lost or duplicated and

everything sent to the connection arrives correctly at the target.

The WFS802g also supports User Datagram Protocol (UDP) for typical datagram applications in which devices

interact with other devices without maintaining a point-to-point connection.

III. Connections

III.1.

Board Structure

Figure III.1 illustrates the structure of the board

Figure III.1 WFS802g Structure

III.2.

Connector Description

The WFS802g is connected to WiRobot system via an 8-pin 2.54 mm-pitch single row connector1 (COM1):

Table III.1 Connector1 (COM1)

Pin Name Function

1 VCC +3.3 V

2 RXD Data receiving

3 TXD Data transmitting

4 RTS Request to send

5 CRTS Clear to send

6 GND Power supply ground

7 NC Reserved

8 NC Reserved

Table III.2 Connector2 (COM2)

Pin Name Function

1 NC Reserved

2 RXD Data receiving

3 TXD Data transmitting

4 RTS Request to send

5 CRTS Clear to send

6 GND Power supply ground

7 NC Reserved

8 NC Reserved

IV. Specifications

Table IV.1 WFS802g Specification

Network Standard IEEE 802.11g

Frequency Range 2.412 – 2.484 GHz

Radio # of Selectable Channels 14 Channels

Security Password protection, locking features, WEP 64/128

Maximum Receive Level -10dBm (with PER < 8%)

Receiver Sensitivity .-82dBm for 11Mbps

.-87dBm for 5.5Mbps

.-89dBm for 2.0Mbps

.-93dBm for 1.0Mbps

WLAN Power and Link LED Current Max: 4mA

Firmware Upgradeable via serial port

Serial Interface CMOS (Asynchronous) 3.3V-level signals

Rate is software selectable (300 bps to 921600 bps)

Serial Line Formats 7 or 8 data bits, 1-2 Stop bits,

Parity: odd, even, none

Modem Control DTR, DCD

Flow Control XON/XOFF (software), CTS/RTS (hardware), none

Network Interface Wireless 802.11g

Protocols Supported 802.11b/g, UDP, TCP, DHCP

Data Rates With Automatic Fallback .11Mbps

.5.5Mbps

.2Mbps

.1Mbps

Media Access Control CSMA/CA with ACK

Frequency Range 2.412 – 2.484 GHz

Range Up to 328 feet indoors

Modulation Techniques .CCK (11Mbps)

.CCK (5.5 Mbps)

.DQPSK (2 Mbps)

.DBPSK (1 Mbps)

Transmit Output Power 14dBm ± 1dBm

Average Power Consumption .1280 mW (WLAN mode; maximum data rate)

.820 mW (WLAN mode; idle)

.710 mW (Ethernet mode)

Peak Supply Current 460 mA

Management Internal web server

Weight with antenna 50 grams

Temperature Operating range, WLAN: -40°C to +70°C

Size (w/o antenna) 50 mm x 40 mm x 15 mm

V. Configuration via Serial Mode or Telnet Port

Configure the unit so that it can communicate on a network with your serial device.

The WFS802g unit is configurable using a terminal program to access the serial port locally. Using this terminal

program to respond to prompts is referred to as the Setup Mode. A Telnet connection may also be used to configure

the unit over the network.

The unit’s configuration is stored in nonvolatile memory and is retained without power. You can change the

configuration at any time. The unit performs a reset after the configuration has been changed and stored.

Note: The menus in this section show a typical device. Not all devices display information in the same manner.

This chapter includes the following topics:

.Accessing Setup Mode

.Server Configuration

.Channel 1 and Channel 2 Configuration

.Email Configuration

.WLAN Settings

.Expert Settings

.Security Settings

.Factory Defaults

.Exit Configuration Mode

Figure V.1 Connection WFS802g with MCR3210P RS232 Interface Module

V.1.

Accessing Setup Mode

V.1.1. Telnet Access

To configure the unit over the network, establish a Telnet connection to port 9999:

1. From the Windows Start menu, click Run.

2. From the Run dialogue box, type the following command (where x.x.x.x is the IP

address and 9999 is the unit’s fixed network configuration port number):

Windows: telnet x.x.x.x 9999

UNIX: telnet x.x.x.x:9999

3. Click OK. The following information displays:

Figure V.1. MAC Address

MAC address 00204AFFFF30

Software version 05.3(040129)WPT

Press Enter to go into Setup Mode

4. To enter the Setup Mode, press Enter within 5 seconds.

Note: Connection fails if Enter is not pressed within 5 seconds.

The configuration settings display, followed by the setup menu options:

Figure V.2. Setup Menu Options

Change Setup:

0 Server

1 Channel 1

2 Channel 2

3 Email

4 WLAN

5 Expert

6 Security

7 Factory defaults

8 Exit without save

9 Save and exit Your choice ?

5. Select an option on the menu by entering the number of the option in the Your choice ? field

and pressing Enter.

View the current configuration by pressing Enter from the Change Setup menu. To enter a

value for a parameter, type the value and press Enter. To confirm a current value, press

Enter (without inputted parameters).

6. When finished, save the new configurations (9 Save and exit). The unit reboots.

V.1.2. Serial Port Access

To configure the unit through a serial connection:

1. Connect a console terminal or PC running a terminal emulation program to your unit's

serial port. The default serial port settings are 9600 baud, 8 bits, no parity, 1 stop bit, no flow

control.

2. Reset the WFS802g unit by cycling the unit's power (turning the power off and back on).

Immediately upon resetting the device, enter three lowercase xcharacters (xxx).

Note: The easiest way to enter Setup Mode is to hold down the x key at the terminal (or

emulation) while resetting the unit. This must be done within three seconds of resetting the

WFS802g.

3. Upon connection, the following information displays:

Figure V.3. MAC Address

MAC address 00204AFFFF30

Software version 05.3 (040129) WPT

Press Enter to go into Setup Mode

4. To enter the Setup Mode, press Enter within 5 seconds

Note: Connection fails if Enter is not pressed within 5 seconds.

The configuration settings display, followed by the setup menu options:

Figure V.4. Setup Menu Options

Change Setup:

0 Server

1 Channel 1

2 Channel 2

3 Email

4 WLAN

5 Expert

6 Security

7 Factory defaults

8 Exit without save

9 Save and exit Your choice ?

5. Select an option on the menu by entering the number of the option in the Your choice ? field and

pressing Enter.

View the current configuration by pressing Enter from the Change Setup menu. To enter a value

for a parameter, type the value and press Enter. To confirm a current value, press Enter

(without inputted parameters).

6. When finished, save the new configurations (9 Save and exit). The unit reboots

V.2.

Server Configuration

The unit’s basic server (i.e. network) values display upon selecting Server (option 0 from the Change Setup

menu). The following sections describe the configurable parameters within the Server configuration menu.

Set the IP Address

If DHCP is not used to assign IP addresses, enter it manually. The IP address must be set to a unique value in the

network. Enter each octet and press Enter between each section inputted. The current value is displayed in

parentheses.

IP Address : ( 0) ( 0) ( 0) ( 0)

Set the Gateway IP Address

The gateway address, or router, allows communication to other LAN segments. The gateway address should

be the IP address of the router connected to the same LAN segment as the unit. The gateway address must be

within the local network.

The default is N(No), indicating the gateway address has not been set. To set the gateway address, type Y. At the

prompt, enter the gateway address.

Set Gateway IP Address (N) ? Y

Gateway IP addr ( 0) ( 0) ( 0) ( 0)

Set the Netmask

A netmask defines the number of bits taken from the IP address that are assigned for the host part.

Netmask: Number of Bits for Host Part (0=default) (0)

The unit prompts for the number of host bits to be entered, then calculates the netmask, which displays in

standard decimal-dot notation when the saved parameters are displayed (for example, 255.255.255.0).

Table V.1. Standard IP Network Netmasks Representing Host Bits

Network Class Host Bits Netmask

A 24 255.0.0.0

B 16 255.255.0.0

C 8 255.255.255.0

Change Telnet Configuration Password

Setting the Telnet configuration password prevents unauthorized access to the setup menu via a Telnet

connection to port 9999 or via web pages. The password must have 4 characters.

Change telnet config password (N) ?

An enhanced password setting (for Telnet access only) of 16 characters is available under option 6 Security

from the Change Setup menu.

Note: A password is not required to access the Setup Mode window via a serial connection.

DHCP Name

There are three methods for assigning DHCP names to the unit.

.Default DHCP Name: If the DHCP name is not changed and the IP is 0.0.0.0, then the DHCP name

defaults to CXXXXXX (XXXXXX is the last 6 digits of the MAC address shown on the label on the

bottom/side of the unit). For example, if the MAC address is 00-20-4A-12-34-56, then the default

DHCP name is C123456.

.Custom DHCP Name: Create your own DHCP name. If using an IP address of 0.0.0.0, then the last

option in Server configuration is Change DHCP device name. This option allows you to change the

DHCP name to an alphanumeric name (LTX in the example).

hange DHCP device name (not set) ? (N)

Enter new DHCP device name : LTX

.Numeric DHCP Name: Change the DHCP name by specifying the last octet of the IP address. When

using this method, the DHCP name is LTXYY where YY is the last octet of the IP address. If the IP

address specified is 0.0.0.12, then the DHCP name is LTX12. This method only works with 2 digit

numbers (0-99).

V.3.

Channel 1 and Channel 2 Configuration

Select option 1 Channel 1 or 2 Channel 2 from the Change Setup menu to define how the serial port

responds to network and serial communications.The following sections describe the configurable

parameters within the Channel configuration menu.

Figure V.5. Serial and Telnet Port Parameters

Baudrate

The unit and attached serial device, such as a modem, must agree on a speed or baud rate to use for

the serial connection. Valid baud rates are 300, 600, 1200, 2400, 4800, 9600 (default), 19200,

38400, 57600, 115200, 230400, 460800, or 921600. The current value is displayed in

parentheses.

Baudrate (9600) ? _

I/F (Interface) Mode

The Interface (I/F) Mode is a bit-coded byte entered in hexadecimal notation. The current value is

displayed in parentheses.

I/F Mode (4C) ? _

The following table displays available I/F Mode options:

Table V.2. Interface Mode Options

(1) 2 stop bits are implemented by the software. This might influence performance.

Note: If attempting to select an I/F Mode bit pertaining to RS-422/485, a

“WARNING: RS-422/485 I/F Modes not supported” message displays.

The following table demonstrates some common I/F Mode settings:

Table V.3. Common Interface Mode Settings

Common I/F Mode Setting Binary Hex

RS-232C, 8-bit, No Parity, 1 stop bit 0100 1100 4C

RS-232C, 7-bit, Even Parity, 1 stop bit 0111 1000 78

Flow

Flow control sets the local handshaking method for stopping serial input/output. The current value is

displayed in parentheses.

Flow (0) ?

Use the following table to select flow control options:

Table V.4. Flow Control Options

Flow Control Option Hex

No flow control 00

I/F Mode Option 7 6 5 4 3 2 1 0

RS-232C (1) 0 0

7 Bit 10

8 Bit 1 1

No Parity 0 0

Even Parity 1 1

Odd Parity 01

1 stop bit 01

2 stop bits(1) 1 1

XON/XOFF flow control 01

Hardware handshake with RTS/CTS lines 02

XON/XOFF pass characters to host 05

Port Number

The Port No setting represents the source port number in TCP connections. It is the number that

identifies the channel for remote initiating connections. The port number functions as the TCP/UDP

source port number for outgoing packets. Packets sent to the unit with this port number are received

to this channel. The port number selected is the Incoming TCP/UDP port and Outgoing TCP/UDP

source port.

Port No (10001) ?

The current value is displayed in parentheses. The default setting for Port 1 is 10001. The range is 1-

65535, except for the following reserved port numbers:

Table V.5. Reserved Port Numbers

Port Numbers Reserved for

1 – 1024 Reserved

9999 Telnet setup

14000-14009 Reserved for Redirector

30704 Reserved (77F0h)

30718 Reserved (77FEh)

Note: It is recommended to not use the reserved port numbers for this setting

as incorrect operation may result.

Use Port 0 for the outgoing local port to change with each connection. The port range is 50,000 to

59,999. Each subsequent connection increments the number by 1 (it wraps back around to 50,000).

Only use this automatic port increment feature to initiate a connection using TCP. Set the port to a non-

zero value when the unit is in a passive mode or when using UDP instead of TCP.

Connect Mode

Connect Mode defines the unit’s connection method and its reaction to incoming connections

over the network. The current value is displayed in parentheses.

ConnectMode (C0) ?

Enter Connect Mode options in hexadecimal notation:

Table V.6. Connect Mode Options

Connect Mode Option 7 6 5 4 3 2 1 0

a) Incoming Connection

Never accept incoming 0 0 0

Accept with modem-control_in Active 0 1 0

Always Accept 1 1 0

b) Response

Nothing(quiet) 0

Character response (C=connect,

D=disconnect, N=unreachable) 1

c) Active Startup

No active startup 0 0 0 0

With any character 0 0 0 1

With modem_control_in Active 0 0 1 0

With a specific start character 0 0 1 1

Manual connection 0 1 0 0

Autostart 0 1 0 1

Hostlist 0 0 1 0

d) Datagram Type

Directed UDP 1 1 0 0

e) Modem Mode

Full Verbose 1 0 1 1 0

Without Echo 0 0 1 1 0

Numeric modem result codes 1 0 1 1 1

Incoming Connection

Never Accept Incoming Rejects all external connection attempts

Accept with modem_control_in Active Accepts external connection requests only

when the modem_control_in input is asserted.

Cannot be used with Modem Mode

Always Accept Accepts any incoming connection when a

connection is not already established. Default

setting

Response

Character Response A single character is transmitted to the serial port when

there is a change in connection state:

C = connected, D = disconnected, N = host unreachable.

This option is overridden when the Active Start Modem

Mode or Active Start Host List is in effect. Default

setting is Nothing (quiet).

No Active Startup Does

not

attempt to initiate a connection. Default setting

With Any Character Attempts to connect when any character is received from

the serial port

Accept with

modem_control_in Active Attempts to connect when the modem_control_in input

changes from not asserted to asserted

With a Specific Start

Character Attempts to connect when it receives a specific start

character from the serial port. The default start character

is carriage return

Manual Connection Attempts to connect when directed by a command string

received from the serial port. The first character of the

command string must be a C(ASCII 0x43), and the last

character must be either a carriage return (ASCII 0x0D)

or a line feed (0x0A). No blanks or space characters may

be in the command string. Between the first and last

command string characters must be a full or partial

destination IP address and can include a destination port

number.

The IP address must be in standard dot-decimal notation

and may be a partial address, representing the least

significant 1, 2, or 3 bytes of the remote IP address. The

period is required between each pair of IP address

numbers.

If present, the port number must follow the IP address,

must be presented as a decimal number in the range 1-

65535, and must be preceded by a forward slash (ASCII

0x2F). The slash separates the IP address and the port

number. If you omit the port number from a command

string, the internally stored remote port number starts a

connection.

If a partial IP address is presented in a command string, it

is interpreted to be the least significant bytes of the IP

address and uses the internally stored remote IP address

to provide the most significant bytes of the IP address. If

the IP address entered is 0.0.0.0/0, the device server

enters Monitor Mode.

For example, if the remote IP address already configured

in the unit is 129.1.2.3, then an example command string

would be C3/7. (This would connect to 129.1.2.3 and port

7.) You may also use a different ending for the connection

string. For example, C50.1/23 would connect you to

129.1.50.1 and port 23.

Table V.7. Manual Connection Address Example

Command String Result if remote IP is 129.1.2.3 and remote port is 1234

C121.2.4.5/1 Complete override; connection is started with host 121.2.4.5, port 1

C5 Connects to 129.1.2.5, port 1234

C28.10/12 Connects to 129.1.28.10, port 12

C0.0.0.0/0 Connects to 129.1.28.10, port 12; enters Monitor Mode

Autostart (Automatic

Connection) The unit automatically attempts a connection to the

remote IP address and port after booting up

Hostlist If this option is set to True, the device server scrolls

through the host list until it connects to the first available

device listed in the host list table. Once it connects, the

unit stops further attempts. If this connection fails, the unit

continues to scroll through the table until it is able to

connect to the next available IP address in the host list.

Hostlist supports a minimum of 1 and a maximum of 12

entries. Each entry contains the IP address and the port

number.

The hostlist is disabled for Manual Mode and for Modem

Mode. The unit will not accept a data connection from a

remote device when the hostlist option is enabled.

Figure V.6. Hostlist Example

Baudrate (9600) ?

I/F Mode (4C) ?

Flow (00) ?

Port No (10001) ?

ConnectMode (C0) ?25

Hostlist :

No Entry !

Change Hostlist ? (N) Y

01. IP address : (000) 172.(000) 19.(000) 0.(000) 1 Port :

(0) ?23

02. IP address : (000) 172.(000) 19.(000) 0.(000) 2 Port :

(0) ?3001

03. IP address : (000) 172.(000) 19.(000) 0.(000) 3 Port :

(0) ?10001

04. IP address : (000) .(000) .(000) .(000)

Hostlist :

01. IP : 172.019.000.001 Port : 00023

02. IP : 172.019.000.002 Port : 03001

03. IP : 172.019.000.003 Port : 10001

Change Hostlist ? (N) N

Hostlist Retrycounter (3) ?

Hostlist Retrytimeout (250) ?

DisConnMode (00) ?

FlushMode (00) ?

DisConnTime (00:00) ?:

SendChar 1 (00) ?

SendChar 2 (00) ?

To enable the hostlist:

1. Enter a Connect Mode of 0x20. The menu shows a list of current entries already defined in the

product.

2. To delete, modify, or add an entry, select Yes. If entering an IP address of 0.0.0.0, that entry and all

others after it are deleted.

3. After completing the hostlist, repeat the previous step if necessary to edit the hostlist again.

4. For Retrycounter, enter the number of times the Lantronix unit should try to make a good

network connection to a hostlist entry that it has successfully ARPed. The range is 1-15, with the

default set to 3.

5. For Retrytimeout, enter the number of seconds the unit should wait before failing an attempted

connection. The time is stored as units of milliseconds in the range of 1-65535. The default is 250.

c) Datagram Type

Directed UDP When selecting this option, the prompt requests the Datagram

type. Enter 01 for directed or broadcast UDP.

When the UDP option is in effect, the unit uses UDP

datagrams to send and receive data.

d) Modem Mode

In Modem (Emulation) Mode, the unit presents a modem interface to the attached serial device. It

accepts AT-style modem commands, and handles the modem signals correctly.

Normally, there is a modem connected to a local PC and a modem connected to a remote machine. A

user must dial from the local PC to the remote machine, accumulating phone charges for each

connection. Modem Mode allows you to replace modems with WFS802gs, and to use an Ethernet

connection instead of a phone call. By not having to change communications applications, you avoid

potentially expensive phone calls.

To select Modem Mode, set the Connect Mode to C6 (no echo), D6 (echo with full verbose), or D7

(echo with 1-character response).

Note: If the unit is in Modem Mode, and the serial port is idle, the unit can still accept network TCP

connections to the serial port if Connect Mode is set to C6 (no echo), D6 (echo with full verbose), or D7

(echo with 1-character response).

Without Echo In Modem Mode, echo refers to the echo of all of the

characters entered in command mode; it does

not

mean to

echo data that is transferred. Quiet Mode (without echo)

refers to the modem

not

sending an answer to the commands

received (or displaying what was typed).

Full Verbose The unit echoes modem commands and responds to a

command with a message string shown in the table below.

1-Character

Response

The unit echoes modem commands and responds to a

command with a single character response.

Table V.8. Modem Mode Messages

Message Meaning

Full Verbose

OK Command was executed without error

CONNECT A network connection has been established

NO CARRIER A network connection has been closed

RING n.n.n.n A remote device, having IP address n.n.n.n, is connecting to

this device.

1-Character Response

0 OK

1 Connected

2 Ring

3 No Carrier

4 Error

Received commands must begin with the two-character sequence AT and be terminated with

a carriage return character.

The unit ignores any character sequence received

not

starting with AT, and only recognizes and

processes single AT-style commands. The unit treats compound AT commands as unrecognized

commands.

If the Full Verbose option is in effect, the unit responds to an unrecognized command string that is

otherwise formatted correctly (begins with AT and ends with carriage return) with the

message

and takes no further action.

If the 1-Character Response option is in effect, the unit responds to an unrecognized command string

that is otherwise formatted correctly with

and takes no further action.

When an active connection is in effect, the unit transfers data and does not process commands

received from the serial interface.

When a connection is terminated or lost, the unit reverts to command mode. When an active

connection is in effect, the unit terminates the connection if it receives the following sequence

from the attached serial device:

.No serial data is received for one second.

.The character sequence +++ is received, with no more than one second between each

two characters.

.No serial data is received for one second after the last + character. At this time, the unit

responds affirmatively per the selected echo/response mode.

.The character string ATH is received, terminated with a carriage return. The unit responds

affirmatively according to the selected echo/response mode and drops the network

connection. The serial interface reverts to accepting command strings.

If this sequence is not followed, the unit remains in data transfer mode.

Table V.9. Modem Mode Commands

Modem Mode Command Function

ATDTx.x.x.x,pppp or

ATDTx.x.x.x/pppp

Makes a connection to an IP address (x.x.x.x) and a remote

port number (pppp).

ATDTx.x.x.x Makes a connection to an IP address (x.x.x.x) and the remote

port number defined within the unit.

ATD0.0.0.0 Forces the unit into Monitor Mode. Uses remote IP address

and port settings to initiate a connection.

ATD or ATDT Forces the unit into Monitor Mode. Uses remote IP address

and port settings to initiate a connection.

ATDx.x.x.x Makes a connection to an IP address (x.x.x.x) and the remote

port number defined within the unit.

ATH Hangs up the connection (Entered as +++ ATH ).

ATS0=n Enables or disables connections from the network going to

the serial port.

n=0 disables the ability to make a connection from the network

to the serial port.

n=1-9 enables the ability to make a connection from the

network to the serial port.

n>9 is invalid

ATEn Enables or disables character echo and responses.

n=0 disables character echo and responses.

n=1 enables character echo and responses

ATVn Enables 1-character response or full verbose.

n=0 enables 1-character response.

n=1 enables full verbose.

Note: The unit recognizes these AT commands as single commands such as ATE0 or ATV1; it does not

recognize compound commands such as ATE0V.

Remote IP Address

This is the destination IP address used with an outgoing connection. The current value is displayed in

parentheses.

Remote IP Address : ( 0) ( 0) ( 0) ( 0)

Note: This option is not displayed when Hostlist is enabled from the ConnectMode prompt

Remote Port

Set the remote TCP port number for the unit to make outgoing connections. This parameter defines

the port number on the target host to which a connection is attempted.

To connect an ASCII terminal to a host using the unit for login purposes, use the remote port number 23

(Internet standard port number for Telnet services)

Remote Port ( 0) ?

Note: This option is not displayed when Hostlist is enabled from the ConnectMode prompt

DisConnMode

Disconnect Mode (DisConnMode) determines the conditions under which the unit will cause a network

connection to terminate. The current value is displayed in parentheses.

DisConnMode ( 0) ?

In DisConnMode, modem_control_in either drops the connection or is ignored. The following table

displays the available input options:

Table V.10. Disconnect Mode Options

Disconnect Mode Option 7 6 5 4 3 2 1 0

Disconnect with

modem_control_in drop (6)

Ignore modem_control_in 0

Telnet mode and terminal type

setup (1)

Channel (port) password (2) 1

Hard disconnect (3) 0

Disable hard disconnect 1

State LED off with connection (4) 1

Disconnect with EOT (^D) (5) 1

(1) The WFS802g sends the "Terminal Type" upon an outgoing connection.

(2) A password is required for a connection

to the

serial port from the network.

(3) The TCP connection closes even if the remote

site does not acknowledge the disconnection.

(4) When there is a network connection to or from the serial port, the state LED turns off instead of

blinking.

(5) When

Ctrl D

or Hex 04 is detected, the connection is dropped. Both Telnet

mode and

Disconnect

with EOT must be enabled for Disconnect with EOT

to function properly.

Ctrl D

is only

detected going from the serial port to the

network.

(6) When modem_control_in transitions from a high state

to a low

state, the network connection to or

from the serial port drops.

Flush Mode

The FlushMode (buffer flushing) parameter controls line handling and network buffers with connection

startup and disconnect.

FlushMode ( 0) ?

Select between two different packing algorithms (the current configuration is displayed within the

parentheses). Available Flush Mode options are:

Table V.11. Flush Mode Options

Function 7 6 5 4 3 2 1 0

Input Buffer (Serial to Network)

Clear with a connection that is

initiated from the device to the

network

Clear with a connection initiated from

the network to the device 1

Clear when the network connection

to or from the device is disconnected 1

Output Buffer (Network to Serial)

Clear with a connection that is

initiated from the device to the

network

Clear with a connection initiated from

the network to the device 1

Clear when the network connection 1

to or from the device is disconnected

Alternate Packing Algorithm (Pack Control)

Enable 1

Pack Control

The packing algorithm defines how and when packets are sent to the network. The standard

algorithm is optimized for applications in which the unit is used in a local environment. The

alternate packing algorithm minimizes the packet count on the network and is especially useful in

applications in a routed Wide Area Network (WAN). Adjusting parameters in this mode can

economize the network data stream. Pack control settings are enabled in Flush Mode. Set this

value to 00 if specific functions are not needed.

Table V.12. Pack Control Options

Option 7 6 5 4 3 2 1 0

Packing Interval

Interval: 12ms 0 0

Interval: 52ms 01

Interval: 250ms 10

Interval: 5sec 1 1

Trailing Characters

None 0 0

One 01

Two 10

Send Characters

2-Byte Send Character Sequence 1

Send Immediately After Send chars 1

Packing Interval:

Packing Interval defines how long the unit should wait before sending

accumulated characters. This wait period is between successive network segments containing data.

For alternate packing, the default interval is 12 ms.

Trailing Characters:

In some applications, CRC, Checksum, or other trailing characters follow the

end-of-sequence character; this option helps to adapt frame transmission to the frame boundary.

Send Characters:

.If 2-Byte Send Character Sequence is enabled, the unit interprets the sendchars as a 2-byte

sequence; if this option is not enabled, the unit interprets them independently.

.If Send Immediately After Characters is not set, any characters already in the serial buffer are

included in the transmission after a "transmit" condition is found. If this option is set, the unit

sends immediately after recognizing the transmit condition (sendchar or timeout).

Note: A transmission might occur if status information needs to be exchanged or an

acknowledgment needs to be sent.

Table of contents

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