Elok-Ori EMWLAN Series, EMWLAN2.5, EMWLAN2.2 Operating Instructions Manual

Download

Elok-Ori Group GmbH NKO 02614 Module WLAN EMWLAN

ISO

9001:2000

Autor:

Created by:

Datum:

Created on:

29.6.2010

. /:

Document No. / Rev.:

NKO201000194/A

Changed by:

Datum:

Changed on:

15.9.2010

Typ dokumentu:

Type of document:

Custom

Approved by:

- - -JBödecker

Datum:

Approved on:

- - -

Status:

State:

In Review

OPERATING INSTRUCTION

Module WLAN EMWLAN

Contents:

Contents: ................................................................................................................................................. 1

1. General description ...................................................................................................................... 2

2. Technical specification ................................................................................................................ 3

3. Operating instructions ................................................................................................................. 4

3.1 Operation modes ......................................................................................................................... 4

3.1.1 LAN to WiFi bridge ................................................................................................................... 5

3.1.1 Serial to WiFi bridge ................................................................................................................ 6

3.1.2 PPP modem emulation ............................................................................................................ 6

3.1.3 Full Internet Controller mode ................................................................................................... 6

3.2 CPU unit configuration ................................................................................................................ 6

3.2.1 The message format ................................................................................................................ 6

3.2.2 EM*COMM ............................................................................................................................... 6

3.2.3 EM*VER ................................................................................................................................... 7

3.2.4 EM*RESTART ......................................................................................................................... 7

3.2.5 EM*SETWDT ........................................................................................................................... 7

3.2.6 EM*DEF ................................................................................................................................... 8

4. Installation ..................................................................................................................................... 9

4.1 EMWLAN modem mounting ........................................................................................................ 9

4.2 Electrical connections.................................................................................................................. 9

5. Maintenance and servicing ........................................................................................................ 10

(page) 1,(of) 10

Elok-Ori Group GmbH NKO 02614 Module WLAN EMWLAN

ISO

9001:2000

Autor:

Created by:

Datum:

Created on:

29.6.2010

. /:

Document No. / Rev.:

NKO201000194/A

Changed by:

Datum:

Changed on:

15.9.2010

Typ dokumentu:

Type of document:

Custom

Approved by:

- - -JBödecker

Datum:

Approved on:

- - -

Status:

State:

In Review

Wire n. 1 2 3 4 5 6 7 Name

VCC

RxD (In)

TxD (Out)

CTS (In)

RTS (Out)

GND

Ethernet connection

(4 twist pair cable)

SMA-m antenna connector

Power supply+ RS232 interface

(7 wire cable OLFLEX ROBUST 215C)

1. General description

The EMWLAN modem is used for communication in 802.11b/g Wireless networks and is specially designed for use in explosive environments. The modem is equipped with a Nano WiReach module from the ConnectOne company.

It is only possible to operate the modem with a WiFi passive antenna, without an active amplifier. The WiFi antenna is connected using a standard SMA-m connector.

The EMWLAN modem is powered by external DC power supply 10V to 32V max.

The modem is designed for connection with another device with a non-intrinsically safe circuit.

All the electronics of the device including Nano WiReach module are imbedded in a plastic tube.

Picture 1 - EMWLAN modem

The EMWLAN modem is built with two versions. Full standard version (EMWLAN2.5 modem) is equipped with the Ethernet interface and RS232 interface. Simpler variant (EMWLAN2.2 modem) is fitted with RS 232 interface only. If the Ethernet interface is available, then the cable is fixed through M12 HSK-M-Flex gland.

The RS232 interface is connected together with the DC power supply a common cable, which is fixed through M16 HSK-M-Flex gland. All wires of this cable are marked by number 1 to 7. The signal description including direction is shown in table 1.

The n.2 (0V) and n.7 (GND) wires are internally connected inside the modem.

Table 1 - Signal description of the cable

(page) 2,(of) 10

Elok-Ori Group GmbH NKO 02614 Module WLAN EMWLAN

ISO

9001:2000

Autor:

Created by:

Datum:

Created on:

29.6.2010

. /:

Document No. / Rev.:

NKO201000194/A

Changed by:

Datum:

Changed on:

15.9.2010

Typ dokumentu:

Type of document:

Custom

Approved by:

- - -JBödecker

Datum:

Approved on:

- - -

Status:

State:

In Review

Parameter

Specification

Description

Power voltage input

10 to 32V DC

External power supply.

Standby load

120mA @ 12V DC

Wlan module is connected in the network.

Maximum load

230mA @ 12V DC

During transmission.

Wlan module

Nano WiReach ConnecOne

Wireless specification

802.11b/g

VF transmit power

15 dBm

VF receiver sensitivity (b/g)

-88dBm / -74dBm

Date rate 11Mbps / 54Mbps

Operation temperature

-20°C to 60°C

Storage temperature

-20°C to 60°C

Humidity

5 to 95%

Diameter / Length

45 mm / 175 mm

Plastic tube only.

Diameter / Length

45 mm / 240 mm

Including with HSK-M-Flex glands.

RS232 + Power input connection

Cable OFLEX ROBUST 215C (7x0.5mm2)

Default length 2,5m, diameter 7,5mm

Ethernet connection

Ethernet shielded cable

Default length 2,5m, diameter 6mm (for EMWLAN2.5 only)

Ingress protection

IP 67

Protection

II2G Ex ib mb IIBT4 Gb

Name

RS232

interface

POWER

INPUT

Max. input voltage Um

+/-32V

32V

2. Technical specification

Table 2 – General parameters

These parameters are used to connect with the device with the non-intrinsically safe circuit:

Table 3 – Maximum input voltage (Um)

(page) 3,(of) 10

Elok-Ori Group GmbH NKO 02614 Module WLAN EMWLAN

ISO

9001:2000

Autor:

Created by:

Datum:

Created on:

29.6.2010

. /:

Document No. / Rev.:

NKO201000194/A

Changed by:

Datum:

Changed on:

15.9.2010

Typ dokumentu:

Type of document:

Custom

Approved by:

- - -JBödecker

Datum:

Approved on:

- - -

Status:

State:

In Review

LEDs indication

Green LED

Yellow LED Off

WiFi not connected

Ethernet disconnected

WiFi connected

Ethernet connected

Flashing

WiFi connecting

Communication on Ethernet

Communication on RS232

3. Operating instructions

The base of the EMWLAN modem is a Nano WiReach module from the ConnectOne company. It makes WiFi connectivity with other devices which are connected through RS232 interface or Ethernet interface with the EMWLAN modem.

The EMWLAN modem can be connected in the WLAN Infrastructure network as a client (works with AP) or can work in a WiFi ADHOC network. It uses WEP or WPA / WPA2 PSK WiFi encryption.

The EMWLAN modem supports these internet protocols:

ARP,ICMP,IP,TCP,DHCP,DNS,SMTP,NTP,POP3,HTTP,FTP,Telnet

The EMWLAN modem supports these security protocols:

SSL3/TLS1,HTTPS,FTPS,RSA,AES,3DES,RC4,SHA1,MD5,WEP,WPA,WPA2

A special high-level “AT+i” protocol for module settings and controlling by RS232 interface is implemented. It eliminates the need to add Wifi drivers, security or a networking protocol. A detailed description of “AT+i” commands is given in the „ATi programmers manual.pdf“ which is delivered by ConnectOne company. The default communication parameters are set as 57600 Bd, 8bit , no parity, 1x stop bit, hw handshake.

The EMWLAN modem is fitted with two indication LEDs. The green LED indicates WiFi network status, the yellow LED indicates link activity on Ethernet interface. For EMWLAN2.2 model the yellow LED indicates the communication on RS232 interface only.

EMWLAN 2.5 **EMWLAN 2.2

The CPU unit inside the EMWLAN modem ensures correct activation and working of the internal module. It is possible to operate this CPU unit by special „EM“ commands through the RS232 interface (such as restarting the module). The CPU unit detects the low level of input voltage. If the power voltage is lower than 10V, the EMWLAN modem automatically switches off.

3.1 Operation modes

The EMWLAN modem supports several operation modes, which are activated according the actual settings:

1. ...... LAN to WiFi bridge (for EMWLAN2.5 modem only)

2. ...... Serial to WiFi bridge

3. ...... PPP modem emulation

4. ...... Full Internet Controller mode

(page) 4,(of) 10

Elok-Ori Group GmbH NKO 02614 Module WLAN EMWLAN

ISO

9001:2000

Autor:

Created by:

Datum:

Created on:

29.6.2010

. /:

Document No. / Rev.:

NKO201000194/A

Changed by:

Datum:

Changed on:

15.9.2010

Typ dokumentu:

Type of document:

Custom

Approved by:

- - -JBödecker

Datum:

Approved on:

- - -

Status:

State:

In Review

WLAN

Local

network

(LAN)

WLAN

Local

network

(LAN)

3.1.1 LAN to WiFi bridge

This mode allows the existing device with LAN connectivity to connect to a WiFi network with no driver development or application changes. The modem acts as a layer 2 bridge between a LAN network and a WiFi network. In this mode the RS2332 interface is used for configuration and status reading only. It supports two modes:

........ Cable replacement ADHOC mode

........ Cable replacement Access Point mode

Picture 2 - Cable replacement ADHOC mode

Picture 3 - Cable replacement Access Point mode

(page) 5,(of) 10

Elok-Ori Group GmbH NKO 02614 Module WLAN EMWLAN

ISO

9001:2000

Autor:

Created by:

Datum:

Created on:

29.6.2010

. /:

Document No. / Rev.:

NKO201000194/A

Changed by:

Datum:

Changed on:

15.9.2010

Typ dokumentu:

Type of document:

Custom

Approved by:

- - -JBödecker

Datum:

Approved on:

- - -

Status:

State:

In Review

3.1.1 Serial to WiFi bridge

This mode allows the existing device with the serial interface to connect to a WiFi network with no driver development or application changes.

3.1.2 PPP modem emulation

This mode allows the existing device currently using PPP communication (such as communication with the GSM modem) to connect transparently over WiFi.

3.1.3 Full Internet Controller mode

This mode allows the simple device connected to RS232 interface to perform complex internet

operation by special “AT+i” protocol (such as Email, FTP, SSL ,embedded web server).

The ConnectOne producer supplies “Demo Card.pdf” for easy configuration and testing of the all

modes. In this document is used the setting “AT+iBDRF=9” (fix baud rate 115200Bd on RS232), but

for EMWLAN modem is recommended to use the setting “AT+iBDRF=8” (fix baud rate 57600Bd).

3.2 CPU unit configuration

The CPU unit configuration is performed by „EM*COMMAND” through RS232 interface. It is mixed with “AT+i” protocol . The default communication parameters are set as 57600 Bd, 8bit , no parity, 1x stop bit, no handshake. It is possible to change this setting using a special „EM*COMM“ command.

3.2.1 The message format

Send: … T

… EM*COMMAND <Cr> … T

wait

… or Send: … T

… EM*COMMAND <Cr> <Lf> … T

wait

…

… ............................. inactivity time on the serial wire (default 1000ms)

wait

EM*COMMAND ............... command message with the prefix „ EM* “

<Cr> ................................. carriage return character (13)

<Lf> ................................. linefeed character (10)

The serial wire mustn’t be changed during the inactivity time (T

) - otherwise the message is not

wait

received. It is possible to change or disable (set 0) the inactivity time by „EM*COMM“ command.

Only upper case characters are used.

3.2.2 EM*COMM

Send: EM*COMM=<Speed>,<T

>,<echo>

wait

Send: EM*COMM? (current setting is returned)

<Speed> ............. communication speed (default 57600)

(4800, 9600, 19200, 38400, 57600, 115200) <T

wait> .........................

inactivity time (default 1000ms)

<echo> ............... 1- echo on, the echo is returned on sending a whole message (default)

0- echo off

(page) 6,(of) 10

Elok-Ori Group GmbH NKO 02614 Module WLAN EMWLAN

ISO

9001:2000

Autor:

Created by:

Datum:

Created on:

29.6.2010

. /:

Document No. / Rev.:

NKO201000194/A

Changed by:

Datum:

Changed on:

15.9.2010

Typ dokumentu:

Type of document:

Custom

Approved by:

- - -JBödecker

Datum:

Approved on:

- - -

Status:

State:

In Review

The setting is stored to non voltage memory.

1. EM*COMM=57600,1000,1 <Cr> <Cr><Lf>OK<Cr><Lf>

2. EM*COMM?<Cr> <Cr><Lf>COMM: 9600,500,1<Cr><Lf> <Cr><Lf>OK<Cr><Lf>

Note: If the input serial wire (RxD) is activated before switching on the power supply and this wire doesn’t change during 1sec after activation, the communication parameters speed and inactivity time are set to default values (57600 Bd,1000ms, echo on).

3.2.3 EM*VER

Send: EM*VER

The version of the EMWLAN2.0 firmware.

1. EM*VER<Cr>

<Cr><Lf>VER: 1.00 EMWLAN2 ETH<Cr><Lf>

3.2.4 EM*RESTART

Send: EM*RESTART

The modem is restarted. The modem is first deactivated and then activated again.

1. EM*RESTART<Cr>

3.2.5 EM*SETWDT

Send: EM*SETWDT=<cfg>,<t_disconnect>,<t_inactivity>

Send: EM*SETWDT? (current setting is returned, default SETWDT: 0,0,0)

<cfg> .................. not used

<t_disconnect> ... disconnecting timeout (range 0 to 1440 minutes, 0 - disable) the modem is automatically restarted after this time

<t_inactivity> ...... inactivity timeout (range 0 to 1440 minutes, 0 - disable)

the modem is restarted if the serial interface line is inactive for this time

The setting is stored to non voltage memory.

1. EM*SETWDT=0,60,0<Cr>

2. EM*SETWDT?<Cr>

(page) 7,(of) 10

Elok-Ori Group GmbH NKO 02614 Module WLAN EMWLAN

ISO

9001:2000

Autor:

Created by:

Datum:

Created on:

29.6.2010

. /:

Document No. / Rev.:

NKO201000194/A

Changed by:

Datum:

Changed on:

15.9.2010

Typ dokumentu:

Type of document:

Custom

Approved by:

- - -JBödecker

Datum:

Approved on:

- - -

Status:

State:

In Review

<Cr><Lf>SETWDT: 0,60,0<Cr><Lf>

3.2.6 EM*DEF

Send: EM*DEF

All the l parameters of the CPU unit inside the modem are set to default. The default setting will be valid after the next power cycle or modem restarting.

1. EM*DEF<Cr>

(page) 8,(of) 10

Elok-Ori Group GmbH NKO 02614 Module WLAN EMWLAN

ISO

9001:2000

Autor:

Created by:

Datum:

Created on:

29.6.2010

. /:

Document No. / Rev.:

NKO201000194/A

Changed by:

Datum:

Changed on:

15.9.2010

Typ dokumentu:

Type of document:

Custom

Approved by:

- - -JBödecker

Datum:

Approved on:

- - -

Status:

State:

In Review

4. Installation

4.1 EMWLAN modem mounting

The electronics of the modem are imbedded in a plastic tube with maximum diameter 45mm and total length 240mm. The modem can be fixed by using a holder for DIN35 rail. The holder is delivered optionally.

4.2 Electrical connections

The communication interface and supply are connected together by common cable. The description of the cable is shown in table 2.

The modem is designed for connection with another device with a non-intrinsically safe circuit. The variants of the connection between the modem and the other device are shown in the following pictures.

Picture 4 - EMWLAN 2.5 with the non-intrinsically safe external device

Picture 5 - EMWLAN 2.2 with the non-intrinsically safe external device

(page) 9,(of) 10

Elok-Ori Group GmbH NKO 02614 Module WLAN EMWLAN

ISO

9001:2000

Autor:

Created by:

Datum:

Created on:

29.6.2010

. /:

Document No. / Rev.:

NKO201000194/A

Changed by:

Datum:

Changed on:

15.9.2010

Typ dokumentu:

Type of document:

Custom

Approved by:

- - -JBödecker

Datum:

Approved on:

- - -

Status:

State:

In Review

5. Maintenance and servicing

This equipment does not require special maintenance.

(page) 10,(of) 10

Elok-Ori EMWLAN Series, EMWLAN2.5, EMWLAN2.2 Operating Instructions Manual

Specifications and Main Features

Frequently Asked Questions

User Manual