Elk IP232 Handbuch

ELK-IP232

Ethernet to Serial Bridge

INSTALLATION

AND CONFIGURATION

MANUAL

828-397-4200 Voice

828-397-4415 Fax

http://www.elkproducts.com

email: [email protected]

PO Box 100 • Hwy. 70W • Hildebran, NC 28637 • USA

1/07

Page 2 ELK-IP232 Installation and Configuration Manual

Table of Contents

Features and Specifications ..............................................................................................3

Basics of Networking .........................................................................................................4

Installation and Hookup .....................................................................................................5

Configuration and Setup ...................................................................................................6

Basic Network Setup .................................................................................................................6

Notes on Flow Control (Hardware/Software Handshaking) .................................................. 8

Notes on Router Setup .............................................................................................................8

Connecting to the ELK-IP232 over a Network .......................................................................9

Bench-testing the ELK-IP232 using a single PC ...................................................................10

Setting up the ELK-IP232 for use with Russound Audio Distribution Systems

and the ELK-TS07 Touchscreen ..............................................................................................10

Updating the ELK-IP232 Firmware .................................................................................... 11

Troubleshooting Guide ......................................................................................................12

Forcing the DHCP/IP Address Settings to Known Values ..................................................... 13

Glossary of Terms ..............................................................................................................13

IMPORTANT NOTICE:

The ELK-IP232 Bridge does not support encryption nor secure network

connections. If remote (Internet) connections are allowed to it, whatever

serial device is connected will be vulnerable. It is recommended that the

Bridge be used within a local network only, behind a router and/or firewall.

Page 3ELK-IP232 Installation and Configuration Manual

Features and Specifications

APPLICATION:

The ELK-IP232 is an Ethernet to RS-232 Serial Port Bridge. It may be used to connect any standard serial

communications device such as a PC, an audio/video distribution system, or an Elk-M1 Control, to an Ethernet

network. It allows bi-directional communication between the two. It operates as a network server, which means it

does not initiate network connections, but rather, accepts them. Once a network connection is accepted, the

remote networked device or computer is virtually connected to the serial device on the other side of the Bridge.

Both the network device and the serial device can send and receive messages to and from each other. Up to twelve

network devices may be connected simultaneously. Data sent from any one of them is bridged to the serial port.

Data received on the serial side is transmitted to all connected network devices.

It is powered by an ELK-P1216 12 Volts DC, 1.5 Amp plug-in power supply/adapter (included). A software setup

utility for configuring the serial and network setup options can be installed from the included CD ROM or may be

downloaded from www.elkproducts.com. The ELK-IP232 is factory defaulted to obtain a dynamic IP address from a

DHCP server (i.e. Ethernet switch, cable modem, etc.), however it may also be setup with a static IP address.

Note: The ELK-IP232 is not replacing the ELK-M1XEP. Unlike the ELK-M1XEP the ELK-IP232

does not offer a built-in web server and cannot send email or alarm reporting.

FEATURES:

• Allows up to twelve (12) simultaneous TCP-IP network connections

• Selectable baud rate from 300 to 115200 baud

• Supports software handshaking (XON/XOFF) and hardware handshaking (RTS/CTS)

• Multiple Bridges can be used on the same network

• Can be updated in the field with new firmware using the Configuration Utility

• Integrated 802.3 compliant 10/100 Mbit network interface

• RS232, DB9M 9-pin serial port connection

• Connects to the M1 RS-232 Serial port (Port 0).

• RJ45 8-pin Network Jack

• 2.1mm barrel type power connector (center positive)

• LED Indicators for Power, Link, and Data

SPECIFICATIONS:

• Operating Voltage: 12 Volts D.C. from ELK-P1216 Plug-in Power Supply **

• Current Draw: approx. 135 mA

• Dimensions: 3.85” L x 1.7” W x 0.93” D

** Any required network equipment, i.e. Ethernet switch, router, cable modem, etc. including the plug-in power supply for

the ELK-IP232, MUST be backed up with an adequately sized UPS (Uninterruptible Power Supply) in order for the

equipment to continue operating during brief power outages.

Page 4 ELK-IP232 Installation and Configuration Manual

Basics of Networking

WAN

LAN

The installer must have a basic understanding of Ethernet setup to install and configure the ELK-IP232. If you do not

have this basic knowledge, please seek the assistance of a network professional.

The

Internet

ISP Cable

DSL

Satellite

Location

High Speed

Modem

Cable Modem

DSL Modem

Satellite Modem

Router with Built-In

Dynamic DNS Support

ELK-IP232

Technical support from Elk

Products, Inc. is limited to the

setup and connection of the

ELK-IP232 inside the local

network.

Connection to outside the local network

may require assistance from others,

including the Internet service provider

and the network administrator.

If using a DSL modem, the modem may

need to be bridged to allow the IP

address to be passed to the router.

Contact the manufacturer of the modem

for assistance.

Refer to the Notes on

Router Setup located

on page 8.

Local Area Network

Wide Area Network

Page 5ELK-IP232 Installation and Configuration Manual

Installation and Hookup

1. Remove power from the ELK-IP232 and serial device before making any connections.

2. Connect the serial port cable from the ELK-IP232 to the serial device. Connect a network patch cable from the

ELK-IP232 to the LAN (local area network) switch or router.

3. Connect the power cable from the P1216 plug-in power supply. Plug the P1216 into a 110V power outlet. The

ELK-IP232 should power up and attempt to link up with the Ethernet network.

4. Run the Configuration Utility on any PC that is connected to the same network to set up the Bridge (See

Configuration and Setup next).

About USB to RS232 serial adapters:

Not all USB to RS232 serial adapters are created equally. Some work well, others do not. Even those that seem

to work may not support hardware handshaking if it is needed. Elk Products has tested some adapters and found

that some work well in some applications while others do not. For this reason, Elk Products can make no

guarantee that the ELK-IP232 will work with your USB to RS232 serial adapter. Elk Products stocks a USB to

RS232 serial adapter (part number ELK-USB232) which has been tested and works with the ELK-IP232 in MOST

applications. For more information, visit our website http://www.elkproducts.com. To order, call 800-797-9355

The following connections are required for the ELK-IP232 Bridge.

a. Connect the DB9M 9-pin male connector on the IP232 to any standard RS232 serial port (ie. personal

computer, ELK-M1 Control, audio/video distribution system) using the appropriate cable. For connection to a

PC, use a null-modem cable. For connection to most other devices, use a standard straight-through cable,

such as the W040A RS232 Ribbon Cable provided.

b. The 2.1mm barrel type connector is used to connect an ELK-P1216 Plug-in Power Adapter (included). The

ELK-IP232 operates from 12 Volts DC and draws approximately 135 mA. The center pin of the barrel connector

is positive.

Any required network equipment, i.e. Ethernet switch, router, cable modem, etc. including

the plug-in power supply for the ELK-IP232, must be backed up with an adequately sized UPS

(Uninterruptible Power Supply) in order for the equipment to continue operating during brief

power outages.

c. The RJ45 8-pin network jack is used to connect the ELK-IP232 Bridge to a LAN/WAN Ethernet network switch

or router. This requires a standard network 8-pin RJ45 terminated patch cable (not included).

a. b. c.

Serial Connector

Network & Power

Connectors

Page 6 ELK-IP232 Installation and Configuration Manual

Configuration and Setup

The ELK-IP232 software configuration utility is supplied on the enclosed CD. You can either run it directly from the

CD or copy it to any folder on your PC and run it from there. Current updates of the utility can be downloaded from

Elk’s Website (www.elkproducts.com).

For the initial setup, the PC running the Configuration Utility and the ELK-IP232 must be on the same local

network. The Utility can not “find” an ELK-IP232 outside of the local area network (refer to step 2 below).

The ELK-IP232 is shipped with DHCP enabled. If a DHCP server exists on your network the ELK-IP232 will obtain a

“dynamic” IP address, gateway address, and subnet mask allowing it to work on the local network. If not, the

factory programmed (default) IP address is 192.168.0.251. If desired, the ELK-IP232 can be configured with your

choice of a “static” (non-changing) IP address. This can be done during the following setup.

Basic Network Setup

1. A router serving DHCP should not need any configuration to allow the ELK-IP232 to connect inside the local

network. For communications outside the local network you will need to establish an open port on the

router. Please refer to the “Notes on Router Setup” section on page 8 and the documentation for the

router for more details.

2. Start the Configuration software. Click the ‘Search’ button. The utility will search for all ELK-IP232s connected

to the local network. If the installation and hookup procedure has been completed correctly, the ELK-IP232

should be listed on this screen. Only one should be found, unless there are multiple units installed. If you are

unable to find the ELK-IP232, please refer to the troubleshooting section of this manual on page 12.

a. Verify that the MAC address in the second column matches the MAC address of the ELK-IP232. The MAC

address is located on the white barcode label located on the outside cover. (see figure below).

b. Note the IP address in the third column. This is the address used to connect/communicate with the ELK-

IP232. Remember, if a DHCP server is on the network and the ELK-IP232 is still set for DHCP (factory

default), this number will most likely be a “dynamic” address. However, in the absence or failure of a DHCP

server, the ELK-IP232 will default to a static IP address of 192.168.0.251. To force the DHCP/IP address

settings to known values, please refer to the troubleshooting section of this manual on page 13.

3. Highlight the ELK-IP232 to be configured and click the ‘Configure’ button.

MAC Address Label

Page 7ELK-IP232 Installation and Configuration Manual

4. Across the top of the screen is displayed the current hardware and software versions. If the ELK-IP232 received

a dynamic IP address from a DHCP server, that address will be displayed immediately below the version

numbers.

5. As previously discussed, the ELK-IP232 is factory defaulted to DHCP, which means that it expects to be

assigned a “dynamic” IP address. Be aware that a “dynamic” IP address can periodically change for many

reasons, including a power down/up cycle. You may optionally assign the ELK-IP232 a permanent “static”

address, if permitted by the network. This will also involve setting values for subnet mask, and default gateway.

These settings can be obtained from your network administrator or Internet service provider. On a local

network, the subnet mask is typically 255.255.255.0 and the default gateway is the IP address of the router.

If the ELK-IP232 is programmed to obtain a dynamic IP address from a DHCP server, it will

revert back to 192.168.0.251 if it fails to obtain a dynamic IP address.

6. The “Device Network Name” is useful for selecting between more than one ELK-IP232 on the same network. It

has no other use and may be left blank if desired.

7 The ELK-IP232 is a network server. This means it listens for and accepts incoming network connections. But it

must know which IP port (1 – 65535) to listen on. Enter the port in the “IP Port to accept connections” box.

The factory default is 2401. This port is recommended, because it is not widely used. You should stay away

from well-known and commonly used ports such as 21, 80, and 8080.

8. Select the baud rate of the connected serial device in the “Serial port baud rate” selection box. Make sure the

serial device is set to the same baud rate.

9. If the connected serial device requires handshaking, select the handshaking method in the “Serial port

handshaking” selection box. If it does not require handshaking, select “None” (default).

Note that while baud rate and handshaking are selectable, the ELK-IP232 supports serial

communications only with eight (8) data bits, no parity, and one (1) stop bit.

10.Click “Save Settings” to send the settings to the ELK-IP232. They will be stored in memory and the ELK-IP232

will reboot.

Other Buttons on this Screen

Read Settings: Click to receive and display the settings currently stored in the ELK-IP232.

Update Firmware: Used to update the ELK-IP232 when updates are released by Elk Products. Please refer to

“Updating the IP232 Frimware” located on page 11.

Reboot Device: The ELK-IP232 automatically reboots after saving settings. However, this button provides a simple

alternative way to reboot should the need arise.

Page 8 ELK-IP232 Installation and Configuration Manual

Notes on Router Setup

The table below lists the ports used by the ELK-IP232.

Port Protocol Use Routing

2362 UDP Discovery (Search) Do not route outside local network

2401 TCP Bridged connections Not recommended to route outside local net

(default)

Port Forwarding

The TCP-IP Port used for accepting connections should not be routed outside the local network for security

reasons. However, if you understand the risks and have a need to route the port outside, it is possible to do so.

By default, the port is 2401, although this may be changed using the Configuration Utility. This port must be

opened through the router to allow access to the ELK-IP232 through the Internet. You must access the router’s

setup in order to open (port forward) these ports. The method for this differs from product to product. Some routers

use a software utility to access their setup while others can be accessed via a web browser. Consult the router’s

documentation for complete instructions on this procedure. Because of the variety of routers available, Elk

Products Technical Support will be unable to assist you with this.

Notes on Flow Control (Software/Hardware Handshaking)

When serial devices transfer large amounts of streaming data, sometimes the sending device can get ahead of the

receiving device. Without any method to slow or stop the sender, the receiver may lose or drop some of the data.

Flow Control is a method for telling the sender to stop until receiver can catch up.

There are two types of flow control, hardware and software. Hardware flow control uses two or more wires between

devices as signals to stop and resume sending. Before the receiver becomes overwhelmed it signals the sender

using one of the lines. This requires the serial cable to be wired properly to include those lines. They are labeled

RTS and CTS. Software flow control on the other hand, does not require extra wires in the cable. The receiver

sends a special byte, called “XOFF” to tell the sender to stop. When ready, it sends an “XON” byte to resume. Of

course, this means the serial data being transferred cannot contain XON or XOFF bytes in the data stream or else

the device receiving those bytes will spuriously stop and resume sending.

You should use flow control only if you understand how it works and if the connected device requires it.

Page 9ELK-IP232 Installation and Configuration Manual

Connecting to the ELK-IP232 over a Network

Any device or software program capable of initiating a network connection to a known IP address and port can

connect to the ELK-IP232. As an example, the instructions below outline how to setup HyperTerminal to connect.

HyperTerminal is a communications program that is typically installed on Windows PCs.

1. Connect the ELK-IP232 as described in “Installation and Hookup” on page 5. The ELK-IP232 and the PC

should both be on the same local network (ie. plugged into the same router).

2. Start HyperTerminal. On most Windows PCs, click “Start” -> “All Programs” -> “Accessories” ->

“Communications” -> “HyperTerminal”. If you see two “HyperTerminals,” select the one without the arrow

beside it.

3. Enter a name such as “ELK-IP232 Network Connection” and click “OK.”

4. In the “Connect Using” box, select “TCP/IP (Winsock).” Above that, in the “Host address” box, enter the IP

address of the ELK-IP232 (as reported or configured by the Configuration Utility – See “Configuration and Setup

on page 6). Enter the ELK-IP232’s IP Port (default is 2401) in the “Port number” box. Click “OK.”

5. In the lower-left corner of HyperTerminal’s window, you should see the message “Connected” and a timer

counting up. If not, review the previous steps to determine if any settings were entered incorrectly.

HyperTerminal should now be connected to the ELK-IP232. If a serial device is already connected to the ELK-

IP232’s serial port, you should see its serial data out appear in HyperTerminal’s window. Likewise, whatever

you type in the HyperTerminal window will be sent to the serial device.

Page 10 ELK-IP232 Installation and Configuration Manual

Bench-testing the ELK-IP232 using a single PC

To bench-test the ELK-IP232 using a single PC, the PC will need to be connected to a local network and be

equipped with a serial port.

A null modem cable is required to connect the ELK-IP232 to the serial port of the computer. If

you use a USB to RS232 serial adapter, see the important note on page 5.

1. Establish a network connection as described on page 9.

2. Start a second instance of HyperTerminal.

3. Enter a name such as “ELK-IP232 Serial Connection” and click “OK.”

4. In the “Connect Using” box, select the COM port connected to the ELK-IP232. Click “OK.”

5. Select the baud rate the ELK-IP232 was configured for. Also select 8 data bits, no parity, 1 stop bit and set

“Flow control” to however the ELK-IP232 was configured. Click “OK.” Note: until you become familiar with flow

control and know your serial port and cable supports it, flow control should be disabled both here and in the

ELK-IP232.

6. In the lower-left corner of HyperTerminal’s window, you should see the message “Connected.” If not, review the

previous steps to determine if any settings were entered incorrectly. HyperTerminal should now be connected

to the serial port of the ELK-IP232.

7. What you type in either HyperTerminal window should appear in the other. If not, review the setup

procedure again.

Setting up the ELK-IP232 for use with Russound Audio

Distribution Systems and the ELK-TS07 Touchscreen

1. Connect the ELK-IP232 serial port to the Russound serial port using the ELK-W040A serial cable (included).

Connect the ELK-IP232 to the local network using an ethernet patch cable. Connect the power supply. For

details, see “Installation and Hookup” on page 5.

2. Use the ELK-IP232 Configuration Utility to configure the ELK-IP232 for 19200 baud and no flow control. Enter a

Static IP address for the ELK-IP232, subnet mask, and default gateway. See “Configuration and Setup” on

page 6. Send these settings to the ELK-IP232 by clicking “Save Settings.”

3. Close the Configuration Utility.

Please refer to the ElkRM Product Manual for software setup instructions.

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