Ethernet to RS485 converter GNOME485 Easy to use - ER-Soft

Ethernet to RS485 converter GNOME485 Easy to use - ER-Soft
Ethernet to RS485 converter
GNOME485
Eas y to use
Se cu ri t y fea t ur es
V ir t ua l se ria l por t
>>> Distribucion: ER-Soft, S.A. www.er-soft.com [email protected] Tel: +34 916-408-408 <<<
2/16/2006
w w w . p a p o u c h . c o m
0202
GNOME485
Papouch s.r.o.
GNOME485
Brief Datasheet
Created: 1/27/2006
Last update: 2/16/2006 15:29
Numer of pages: 24
© 2006 Papouch s.r.o.
Papouch s.r.o.
Address:
Strasnicka 3164/1a
102 00 Praha 10
Czech Republic
Telefon:
+420 267 314 267-8
+420 602 379 954
Fax:
+420 267 314 269
Internet:
www.papouch.com
E-mail:
[email protected]
>>> Distribucion: ER-Soft, S.A. www.er-soft.com [email protected] Tel: +34 916-408-408 <<<
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GNOME485
TABLE OF CONTENTS
Basic information ................................................4
Data channel settings ................................14
Description...................................................4
Local port ..............................................14
Applications .................................................4
Remote port ..........................................14
Features ......................................................4
Remote IP address ...............................15
Types of communication ..............................5
UDP Datagram mode............................15
TCP server/client......................................5
Incoming connection .............................15
TCP server ...............................................5
Active connection start-up .....................15
TCP client.................................................5
Function with MODEM MODE option ....16
UDP .........................................................5
Port password .......................................16
Technical Parameters ..................................5
Idle timer ...............................................16
Installing options ..........................................6
Line speed ............................................16
Communication encrypting: ......................6
Character size.......................................16
Connection of module ..................................6
Parity.....................................................17
Indicators .....................................................6
Stop bit..................................................17
ON indicator .............................................6
Response..............................................17
COM indicator ..........................................6
Packing algorithm .................................17
Indicators on the Ethernet connector ........6
Idle time ................................................17
Basic network information ...................................7
Trailing characters.................................17
IP address ...................................................7
Characters 01, 02 .................................18
MAC address ...............................................7
With active connection ..........................18
How to easily set up your GNOME485.............8
With passive connection .......................18
An Ethernet – RS485 converter (basic setting)
....................................................................8
Connecting an RS485 device via Ethernet to a
"local" COM port ..........................................9
Extension of an RS485 serial line via Ethernet
....................................................................9
When disconnected...............................18
Network settings ........................................19
IP address.............................................19
Subnet mask.........................................19
Gateway................................................20
Methods of setting the parameters....................10
Telnet password....................................20
Configuration software...................................10
Set up ........................................................20
Search by IP address.................................11
Read from device.......................................20
Search by MAC address ............................12
Default values............................................20
Set the IP address .....................................12
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GNOME485
Papouch s.r.o.
BASIC INFORMATION
Description
GNOME485 is a simple and inexpensive converter between a 10/100 Ethernet interface and an
RS485 line. It enables users to simply connect devices with the RS485 interface to an Ethernet
line or to extend a serial line to the other end of the world via the Internet. This solution includes
a "virtual serial port" – software that creates a new serial port in the Windows operating system,
and this port is directed to the GNOME485 module via the Ethernet interface. Configuration with
the aid of intuitive control software is easy.
Applications

A remote RS485 line as another COM port in your Windows system

Connection to the Ethernet environment of devices communicating via an RS485 line

Extension of an RS485 serial line via Ethernet

Virtual port – controlling the remote line with the aid of its original software

Internet communication with remote devices

Connection of two RS485 lines via Ethernet
Features

Converting a serial line to Ethernet

Connecting via an RJ45 connector to a 10/100Base-T Ethernet network

Miniature dimensions – easy to integrate into the existing devices

Easy configuration using the included software

Configuration with the aid of Windows software, Telnet Protocol, or a WEB interface

TCP and UDP protocols

The RS485 line is connected to a plug connector

Transmission speed from 300 Bd to 460 kBd

Signals used: RxTx+, RxTx- (A, B)

Power supply: 5 to 36 V

Indication of power supply, data transmission, network connection and activity

Dimensions 54 × 24 × 33 mm
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GNOME485
Types of communication
The GNOME485 converter uses two ports for communication: data and setup. The data port (for
the standard data transmission) is optional and its standard setting is 10001. The setup port is
9999.
TCP server/client
Upon switching on, the GNOME485 module expects data from the serial line and also connection
request from the Ethernet interface.
If the data comes from the serial line, the TCP client mode is activated (cf. below). If a connection
request comes, the module is switched over to the TCP sever mode (cf. below).
The module may remain in the activated mode, or – after a time lag – cancel the mode and wait for
data from the serial line or Ethernet interface.
TCP server
Upon switching on, the GNOME485 module listens on the sleeted port and waits for the client
connection.
As soon as a client is connected, data from the Ethernet is immediately sent to the serial line and
vice versa. If the client is not connected and data from the serial line is coming, it is stored in a
cache and sent immediately upon the client connecting to the server.
If the client is silent or terminates the connection incorrectly, GNOME485 terminates its connection
after a preset time lag.
TCP client
When idle, the GNOME485 module waits for data from the serial line. As soon as data is received,
the GNOME485 module tries to connect to the server at a given IP address. If the connection cannot
be established, the data is stored in a cache memory. Upon establishing the connection, the data is
sent out and data from Ethernet is transmitted to the RS485 serial line.
UDP
The Ethernet data is expected on a preset port. When data comes from the RS485 serial line, it is
sent to the preset IP address. Within a UDP transmission, response of the opposite side is not
tested; the application should be independently protected from a data loss.
Technical Parameters
Connection to Ethernet ..................................TBase 10/100 RJ45
RS485 connector...........................................slip-on terminal
RS485 signals used.......................................RxTx+, RxTxCache memory ..............................................2 kB for transmission, 2 kB for receipt
Power supply voltage ....................................5 to 36 V
Current consumption – at 12 V ......................typically 80 mA
Weight ...........................................................60 g
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GNOME485
Papouch s.r.o.
Installing options
Communication encrypting:

No encrypting (standard version)

128-bit encrypting, Rijndael algorithm
Please do not hesitate to contact us if you have specific requirements for the GNOME485
module's workmanship and functionality.
Connection of module
The GNOME485 module is equipped with two
connectors. The Ethernet interface is connected to
the front RJ45 connector. It goes via a standard
(uncrossed) cable to a HUB or Switch.
On the rear side of the module is situated 4-pole
slip-on terminal for power supply (PWR+; GND)
and RS485 (RxTx+; RxTx-). The connection shows
Fig. 1.
The following optional accessories of the converter
can be ordered:


Fig. 1 – RS485 and power supply connector
Power supply (230 V adaptor).
A cable length of 2 m with a 3.8 × 1.3 mm connector on one end. Free wires for connection to a
power source are provided on the other end of the cable length.
Indicators
ON indicator
Green. Left LED in Fig. 1.
Function: Indicator of power supply voltage.
COM indicator
Yellow. Right LED in Fig. 1.
Function: It is on when connection is established.
Indicators on the Ethernet connector
Link LED (Left Side)
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Activity LED (Right Side)
Color
Meaning
Color
Meaning
Off
No Link
Off
No Activity
Yellow
10 Mbps
Yellow
Half-Duplex
Green
100 Mbps
Green
Full-Duplex
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GNOME485
BASIC NETWORK INFORMATION
IP address
Within a network, GNOME485 must have the following settings: subnet mask, gateway IP
address, and the unique IP address. The subnet mask is set as 255.255.255.01 by the
manufacturer; and the IP address as 192.168.1.254.
Default IP address:
_192_._168_.__1__._254_
Default gateway IP address:
__0__.__0__.__0__.__0__
Default subnet mask:
_255_._255_._255_.__0__
If you change any of these IP settings, we recommend you to put down the new values:
IP address:
_____._____._____._____
Gateway IP address:
_____._____._____._____
Subnet mask:
_____._____._____._____
MAC address
The unique address shown on the GNOME485 module's label (on the bottom or side). It is a
unique address of the module. It consists of six hexadecimal numbers separated with dashes –
in a format such as 00-20-4A-xx-xx-xx (where xx are the unique numbers shown on the label).
MAC address:
1
00-20-4A-_____-_____-_____
This subnet mask is also referred to as a "type C" mask..
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GNOME485
Papouch s.r.o.
HOW TO EASILY SET UP YOUR GNOME485
This chapter gives examples of quick and easy setup of the GNOME485 converter for typical
examples of use. Select the example that is the closest to your application. (The examples are
given for the basic setting of the converter.)
An Ethernet – RS485 converter (basic setting)
This setting is meant for equipment which requires permanent connection to RS485.
1) Connect the converter to your network and ask your network administrator for the basic
network parameters to be assigned to the converter (cf. the preceding page: the IP
address, gateway IP address, and the subnet mask).
2) Activate the supplied configuration program2 and click on "IP setting." A wizard is thus
opened, in which you first enter the MAC address of the converter (written on the label on
the module's side) and then the basic network parameters. (Cf. the description of this
wizard under the heading "Set the IP settings" on page 12, and also Fig. 6 and Fig. 7.)
3) The GNOME485 module is now set as an Ethernet/RS485 converter with the selected IP
address and the following parameters of the serial line: speed 9,600 Bd, 8 data bits,
parity – none, and one stop-bit. If you need to change the parameters if the serial line,
click on the "Data channel setting" in the main window of the program; at the top central
area there is a frame with the serial line parameters (cf. Fig. 2).
Fig. 2 – serial line parameters
4) Save the changed settings in the converter by clicking on the "Settings" button in the
bottom area of the window. The GNOME485 module is thus set as an Ethernet/RS485
converter. This setting is suitable for the basic function of the converter, without
additional options for data flow control, timing, or packet creation.
2
The program can be downloaded, at any time and free of charge, at
www.papouch.com/en/products.asp?dir=ethernet .
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GNOME485
Connecting an RS485 device via Ethernet to a "local" COM port
Extension of an RS485 serial line via Ethernet
The following setting is suitable for equipment which requires permanent connection to RS485.
1) Connect GNOME485 to an Ethernet network.
2) Install the "Virtual Serial Port"3
3) Connect your RS485 device to the module's serial line GNOME485.
4) On a computer connected to an Ethernet network (which must be interconnected with the
network in which the GNOME485 module is connected), activate the application which
communicates with your device on the RS485 line, and select from the ports' list the
COM port set by the Virtual Serial Port..
5) The program now works as if via the RS485 line, which is in fact connected via the
GNOME485 module and an Ethernet interface.
3
A detailed description of the installation is here .
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GNOME485
Papouch s.r.o.
METHODS OF SETTING THE PARAMETERS
1) Windows configuration software (via Ethernet)
2) Using a Web browser (via Ethernet)4
CONFIGURATION SOFTWARE
The configuration software can be used for easy settings of the converter parameters. The main
window of the program is shown in Fig. 3. (By clicking on the flag icons in the top right corner
you can switch between Czech and English.)
Fig. 3 – main window of configuration program
If you need to configure the converter after the first connection in your network, we
recommend you to follow the instructions given under the heading "Set the IP" on page 12.
4
The GNOME provide its own WEB pages. It could be browsed by entering the Gnome's IP address to
address field of your Internet browser. The Internet browser has to have installed a plug-in for Java aplet
support.
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GNOME485
Search by IP address
This command enables you to find the GNOME485 module in the network according to its IP
address. When you click on this button, the window shown in Fig. 4 is displayed. Write the IP
address in the line and push "OK."
Fig. 4 – entering the IP address to look for
If the converter can be found at the given IP address, its settings are displayed in the settings
window.
Not found?
1) Check whether the converter is connected and is active (indicators on its Ethernet
connector are on or flashing).
2) Check the correct IP address (it is set to 192.168.1.254 by the manufacturer).
3) The converter's IP address may not be compatible with your network. Change the IP
address using the "Set the IP" command (page 12).
I don't know the converter's IP address
Search the GNOME485 by MAC address (written on the label on the modules’ side) using
the “Find by MAC” command (page 12) or assign to your converter an IP address suitable
for your network. You can set the IP address using the "Set the IP" procedure (page 12).
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GNOME485
Papouch s.r.o.
Search by MAC address
You can use this command if you need to find the converter according to its unique MAC
address (it is written on the label on the module's side). When you click on this button, the
window shown in Fig. 5 is displayed. Write the MAC address5 and push "OK."
Fig. 5 – entering the MAC address to look for
If the converter with the given address can be found, its settings are displayed in the settings
window.
Not found?
1) Check whether the converter is connected and is active (indicators on its Ethernet
connector are on or flashing).
2) Check the correct MAC address on the label placed on the converter.
3) The converter's IP address may not be compatible with your network. Change the IP
address using the "Set the IP" command (page 12).
Set the IP address
Using this command, you can assign a new IP address to the converter. This procedure is
specifically suitable for connecting converters in production, because the basic parameters can
be adapted for a new network. When you click on this button, the window shown in Fig. 6 is
displayed. Write the MAC address to look for 5 and push "OK."
Fig. 6 – the first screen of the new IP setting wizard
5
The address is written on the label placed on the converter. It can be entered in the format AB-CD-EF-GH-IJKL or ABCDEFGHIJKL. It is not case sensitive (you can enter lower-case or capital letters).
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GNOME485
The entered MAC address is looked for. When it is found, the screen shown in Fig. 7 is
displayed.
Set parameters suitable for your network in the screen shown in Fig. 7. If you are not sure what
parameters you should choose, contact your network administration, who will give you the
required data.
Fig. 7 – IP settings wizard > setting the IP address, subnet mask and gateway
The parameters are changed upon clicking on "Set up".
The module is now set as an Ethernet/RS485 converter, with the IP address, subnet mask
and gateway you chose, and the other parameters set by the manufacturer. No more
settings are necessary for the basic functions of an Ethernet/RS485 converter6.
A small window will be displayed, asking if you wish to "set the device." If you click "Yes," the
program activates the procedure for setting additional parameters of the converter. The "Data
channel settings" section of the main window will be displayed (cf. chapter "Data channel
settings" on page 14).
6
Within the initial setting, the RS485 line of the converter has the following parameters: speed: 9,600 Bd,
number of bits: 8, parity: none, number of stop-bits: 1.
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GNOME485
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Data channel settings
When you click on the "data channel settings" tab after connecting the converter, the setting
window (Fig. 8) is displayed.
Fig. 8 – Data channel settings
Local port
Data channel options > Ethernet settings > Local port
Default value: 10001
Recommended references: Fig. 8
Number of the port on which the converter expects connection from Ethernet.
This item is only meaningful if the "Incoming connection" option (cf. page 15) is set to "Allowed"
(the so-called TCP Server mode).
Remote port
Data channel options > Ethernet settings > Remote port
Default value: 0
Recommended references: Fig. 8
The remote port to which the converter is connected (for the TCP Client mode).
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GNOME485
Remote IP address
Data channel options > Ethernet settings > Remote IP address
Default value: 0.0.0.0
Recommended references: Fig. 8; "Types of communication" (page 5)
The IP address to which the converter is connected (for the TCP Client mode).
UDP Datagram mode
Data channel options > Ethernet settings > UDP Datagram mode
Default value: False (not checked)
Recommended references: Fig. 8; "Types of communication" (page 5)
By checking this field you will activate the UDP mode.
Incoming connection
Data channel options > Ethernet settings > Incoming connection
Default value: Allowed
Recommended references: Fig. 8; "Types of communication" (page 5)
This setting determines the converter's response to connection coming from Ethernet.
Allowed:
The converter will always accept a connection request coming from Ethernet.
Forbidden:
The converter will ignore all connection requests coming from Ethernet.
Active connection start-up
Data channel options > Ethernet settings > Active connection start-up
Default value: Forbidden
Recommended references: Fig. 8; "Types of communication" (page 5)
This setting determines whether the converter will establish connection to Ethernet upon
occurrence of different events. If established, the connection will be with the "Remote IP
address" and the "Remote port."
Disabled:
The converter will never establish connection automatically.
Establish connection after any character on serial line:
The converter will establish the connection if any character comes from the serial line.
Establish connection after CR character is recieved:
The converter will establish the connection if the CR character is received (carriage return;
Enter; Decimal: 13; Hexadecimal: 10 ) from the serial line.
Manual setting (C + address):
The converter will try to establish the connection if it receives from the serial line a command
in the following format: C[IP address]/[port]
Example of a command received from the RS485 serial line to establish connection with IP
192.168.1.105, port 4567: C192.168.1.105/4567
If the subnet mask restricts the range of the network's IP addresses, for example to 8 bits (the
"C type" mask – 255.255.255.0), the command can have an abridged format as follows:
C105/4567
Autostart outbound connection:
The converter will establish the connection immediately upon activation.
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Modem mode:
This option activates modem emulation by the GNOME485 module. All communication is then
controlled by AT commands from the serial line. The following item, "Module actions within the
Modem mode", is directly related to this mode.
Function with MODEM MODE option
Data channel options > Ethernet settings > Function with MODEM MODE option
Default value: Echo off
Recommended references: Fig. 8; "Modem mode:" (page 16)
(This item is only available if the "Modem mode" is activated as the "Active connection start-up"
option. Cf. the heading above.)
This setting specifies the converter's actions within the modem emulation mode.
Without echo:
No information is written locally (to the serial line).
With echo:
The "echo" is sent locally (to the serial line) with the connection status info.
Numeric modem result codes:
The modem response is expressed as one character.
Port password
Data channel options > Ethernet settings > Port password
Default value: no password (not checked)
Recommended references: Fig. 8
Immediately upon receiving a connection request from Ethernet, password is required. If the
wrong password is given, the converter will disconnect the line. The maximum length of the
password is 15 characters. Enter the selected password in the text field below the checkbox.
Idle timer
Data channel options > Ethernet settings > Idle timer
Default value: 0:0 (off)
Recommended references: Fig. 8
If Ethernet connection has been established and no communication occurs in either direction for
a preset time interval, the connection is cancelled. Minutes and seconds are entered separately.
If the time is entered as 0:0, this function is switched off.
Line speed
Data channel options > Serial line settings > Serial line speed
Default value: 9,600 Bd
Options [Bd]: 300; 600; 1,200; 2,400; 4,800; 9,600; 19,200; 38,400; 57,600; 115,200; and 230,400
Recommended references: Fig. 8
This option enables the user to set the communication speed of the serial line in Bauds.
Character size
Data channel options > Serial line settings > Character size
Default value: 8 bits
Options [bits]: 8, 7
Recommended references: Fig. 8
Setting of the number of data bits on the serial line.
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GNOME485
Parity
Data channel options > Serial line settings > Parity
Default value: none
Options: none, even, odd
Recommended references: Fig. 8
Setting of the parity for data on the serial line.
Stop bit
Data channel options > Serial line settings > Stop bit
Default value: 1
Options: 1, 2
Recommended references: Fig. 8
Setting of the number of the stop bits for data on the serial line.
Response
Data channel options > Serial line settings > Response
Default value: No answer
Options: No answer, Character response
Recommended references: Fig. 8
If "Character response" is selected, the converter sends to the serial line a character depending
on the Ethernet connection status:
C......connected
D......disconnected
N......the server is unavailable
Packing algorithm
Data channel options > Serial line packeting> Packeting
Default value: Disable
Options: Disable, Enable
Recommended references: Fig. 8
Control of packet creation of data coming from the serial line. The "Enable" setting will make
available two more options for specification of packeting.
Idle time
Data channel options > Serial line packeting> Idle time
Default value: 12 ms
Options: 12 ms; 52 ms; 250 ms; 5,000 ms
Recommended references: Fig. 8
(This option is only available if "Packeting" is set to "Enable".)
This setting determines the idle time interval (of no data from RS485) after which the received
data is packed and sent to Ethernet.
Trailing characters
Data channel options > Serial line packeting> Trailing characters
Default value: none
Options: none, one, two
Recommended references: Fig. 8
(This option is only available if "Packeting" is set to "Enable".)
This option determines the number of characters that are deemed a signal for packet
preparation to be sent. As soon as the character(s) is/are received, the, packet is prepared and
subsequently sent as soon as another character is received (any). (This option can be used for
recognising characters, e.g., preceding the checksum. The character that is always received
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GNOME485
Papouch s.r.o.
before a checkusm is set here. As soon as such a character is received, the converter will wait
for another byte, which is then incorporated into the packet and the packet is sent.)
Characters 01, 02
Data channel options > Serial line packeting> Characters 01, 02
Default value: none
Recommended references: Fig. 8
(This option is only available if "Packeting" is set to "Enable".)
The last but one characters in a packet are saved here (cf. the explanation of the preceding
option).
With active connection
Data channel options > Erasing cache memory > Input > With active connection
Data channel options > Erasing cache memory > Output > With active connection
Default value: Disable
Options: Disable, Enable
Recommended references: Fig. 8
This option can be set separately for the input (from RS485 to Ethernet) and output (from
Ethernet to RS485) cache memories.
As soon as the converter establishes connection with Ethernet, the cache is deleted (input
and/or output, according to the settings).
As soon as the converter receives connection established from Ethernet, the cache is deleted
(input and/or output, according to the settings).
With passive connection
Data channel options > Erasing cache memory > Input > With passive connection
Data channel options > Erasing cache memory > Output > With passive connection
Default value: Disable
Options: Disable, Enable
Recommended references: Fig. 8
This option can be set separately for the input (from RS485 to Ethernet) and output (from
Ethernet to RS485) cache memories.
As soon as the converter establishes connection with Ethernet, the cache is deleted (input
and/or output, according to the settings).
As soon as the converter receives connection established from Ethernet, the cache is deleted
(input and/or output, according to the settings).
When disconnected
Data channel options > Deleting cache memory > Input > When disconnected
Data channel options > Deleting cache memory > Output > When disconnected
Default value: Disable
Options: Disable, Enable
Recommended references: Fig. 8
This option can be set separately for the input (from RS485 to Ethernet) and output (from
Ethernet to RS485) cache memories.
The cache is deleted (input and/or output, according to the settings) when the connection is
broken.
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GNOME485
Network settings
When you click on the "Network settings" after connecting the converter, the setting window
(Fig. 9) is displayed.
Fig. 9 – Network settings
IP address
Network settings > Device network settings > IP address
Default value: 192.168.1.254
Recommended references: Fig. 9
Setting of the IP address for the GNOME485 module. It uniquely identifies the module within the
respective network.
Subnet mask
Network settings > Device network settings > Subnet mask
Default value: 255.255.255.0 (C type mask)
Recommended references: Fig. 9
It sets the subnet mask (a range of IP addresses used within the network segment) of the
GNOME485 module. Letter codes are sometimes used for masks.(A stands for 255.0.0.0; B for
255.255.0.0; and C represents 255.255.255.0)
If the "Automatically" field is checked, the subnet mask is set as 0.0.0.0.
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GNOME485
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Gateway
Network settings > Device network settings > Gateway
Default value: 0.0.0.0
Recommended references: Fig. 9
The default gateway stands for the IP address of the computer through which the GNOME485
module is connected to the higher-level networks (possibly the Internet as well).
Telnet password
Network settings > Device network settings > Telnet password
Default value: none
Recommended references: Fig. 9
The password for connection via Telnet or a web interface. Maximum length is four characters
(letters and/or numerals).
Set up
When you push this button at the bottom of the window, the changed settings are saved.
Read from device
When you click here, the actual settings are read from the converter. (The same reading of
actual settings is carried out when the converter is connected.)
Default values
This option will return all settings to their initial values as set by the manufacturer.
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GNOME485
>>> Distribucion: ER-Soft, S.A. www.er-soft.com [email protected] Tel: +34 916-408-408 <<<
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GNOME485
Papouch s.r.o.
Papouch s.r.o.
Data transmission in industry, line and protocol
conversions, RS232/485/422/USB/Ethernet/GPRS/
WiFi, measurement modules, intelligent
temperature sensors, I/O modules, and
custommade electronic applications.
Address:
Strasnicka 3164/1a
102 00 Praha 10
Czech Republic
Telefon:
+420 267 314 267-8
+420 602 379 954
Fax:
+420 267 314 269
Internet:
www.papouch.com
E-mail:
[email protected]
>>> Distribucion: ER-Soft, S.A. www.er-soft.com [email protected] Tel: +34 916-408-408 <<<
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