Comtrol DEVICE MASTER RTS Quick guide

Hardware Installation and
Configuration

Trademark Notices
Comtrol, NS-Link, and DeviceMaster are trademarks of Comtrol Corporation.
Microsoft and Windows are registered trademarks of Microsoft Corporation.
HyperTerminal is a registered trademark of Hilgraeve, Inc.
Other product names mentioned herein may be trademarks and/or registered trademarks of their respective
owners.
Third Edition, May 28, 2003
Copyright © 2001- 2003. Comtrol Corporation.
All Rights Reserved.
Comtrol Corporation makes no representations or warranties with regard to the contents of this document or
to the suitability of the Comtrol product for any particular purpose. Specifications subject to change without
notice. Some software or features may not be available at the time of publication. Contact your reseller for
current product information.
Document Number: 2000275 Rev. C

Table of Contents 3
Table of Contents
Hardware Installation...........................................................................................................5
How to Use this Document .......................................................................................................................... 5
Installation Overview................................................................................................................................... 5
RTS 1-Port Installation ................................................................................................................................ 6
RTS 4/8-Port Installation ............................................................................................................................. 7
RTS 16-Port Installation - External Power Supply ............................................................................... 8
RTS 16/32RM Installation - Internal Power Supply ............................................................................ 10
Adding a Unit to an Existing Installation.............................................................................................. 11
Replacing Hardware................................................................................................................................... 11
Configuring the Network Setup .......................................................................................12
Default Network Settings .......................................................................................................................... 12
Programming the IP Address ................................................................................................................... 12
Configuring for MAC Address Usage ...................................................................................................... 12
Locating the NS-Link Drivers and Installation Documentation ..................................................... 13
Connecting Serial Devices .................................................................................................14
Connecting Devices..................................................................................................................................... 14
Building Cables for Serial Devices.......................................................................................................... 14
Building Null-Modem Cables
(RS-232)..................................................................................................................................................... 15
Building Null-Modem Cables
(RS-422)..................................................................................................................................................... 15
Building Straight-Through Cables
(RS-232/485).............................................................................................................................................. 15
RTS Connector Pinouts ............................................................................................................................. 16
DB9 Connector Pinouts ............................................................................................................................ 16
Building Additional DB9 Loopback Plugs............................................................................................... 16
RJ45 Connector Pinouts........................................................................................................................... 16
Building Additional RJ45 Loopback Plugs ............................................................................................. 17
Building an RS-485 Test Cable................................................................................................................ 17
RTS Specifications...............................................................................................................18
Electromagnetic Compliances.................................................................................................................. 18
Power Supply Specifications.................................................................................................................... 19
Hardware Specifications ........................................................................................................................... 20
Environmental Specifications.................................................................................................................. 21
RTS Product Pictures................................................................................................................................. 22
RTS 1......................................................................................................................................................... 22
RTS 1-Port Embedded.............................................................................................................................. 23
RTS 4 with DB9 Ports .............................................................................................................................. 23
RTS 4 with RJ45 Ports............................................................................................................................. 23
RTS 8 with DB9 Ports .............................................................................................................................. 24
RTS 8 with RJ45 Ports............................................................................................................................. 24
RTS RM16 - External Power Supply ....................................................................................................... 24
RTS 16RM................................................................................................................................................. 24
RTS 32RM................................................................................................................................................. 24

Table of Contents 4
Table of Contents
Notices............................................................................................................................................................ 25
Radio Frequency Interference (RFI) (FCC 15.105).................................................................................25
Labeling Requirements (FCC 15.19) ....................................................................................................... 25
Modifications (FCC 15.21)........................................................................................................................ 25
Serial Cables (FCC 15.27) ........................................................................................................................ 25
Underwriters Laboratory ......................................................................................................................... 25
Important Safety Information ................................................................................................................. 25
Troubleshooting and Technical Support........................................................................26
Troubleshooting Checklist ....................................................................................................................... 26
General Troubleshooting........................................................................................................................... 28
NS-Link Driver Troubleshooting ............................................................................................................. 29
Daisy-Chaining DeviceMaster RTS 4/8/16 Units................................................................................... 31
Technical Support....................................................................................................................................... 32
Appendix A. RTS 1-Port Embedded System Installation............................................33
Installation Overview................................................................................................................................. 33
Building the Serial Ribbon Cable............................................................................................................ 33
Mounting the RTS ....................................................................................................................................... 34
Attaching the Network and Serial Cables ............................................................................................. 35
Connecting the Power and Verifying Installation .............................................................................. 36
Index........................................................................................................................................37

Hardware Installation 5
Hardware Installation
How to Use this Document
You can use the interactive Table of Contents to locate the information you need.
Red, underscored items are links to URLs. Blue, underscored items are links
within this document or to another document on the media.
Note: If you copy this document from the ftp/web or CD and do not use the
procedure discussed on the CD, you will get an error message when selecting
hyperlinks outside of this document.
Installation Overview
The DeviceMaster RTS enables communications with serial devices over an
Ethernet network. The RTS provides for remote management, configuration, and
connectivity through its 10/100BASE–T Ethernet connection.
Use the links below to locate installation procedures for the following models:
Note: The DeviceMaster Primo is not supported in this document.
Ports Model Description Installation Procedure
1DB9 serial port with one
Ethernet port RTS 1-Port Installation on Page 6
1 Embedded system Appendix A. RTS 1-Port Embedded
System Installation on Page 33
4 DB9 or RJ45 serial ports
with two Ethernet† ports RTS 4/8-Port Installation on Page 7.
8 DB9 or RJ45 serial ports
with two Ethernet† ports RTS 4/8-Port Installation on Page 7
16 RJ45 serial ports with two
Ethernet† ports
RTS 16-Port Installation - External
Power Supply on Page 8
16 RJ45 serial ports with one
Ethernet port
RTS 16/32RM Installation - Internal
Power Supply on Page 10
32 RJ45 serial ports with one
Ethernet port
RTS 16/32RM Installation - Internal
Power Supply on Page 10
† One of the Ethernet ports on the DeviceMaster RTS 4/8/16 models is a
built-in downstream port for daisy-chaining DeviceMaster systems or
other network-ready devices.
Default Network Settings
IP address:
192.168.250.250
Subnet mask:
255.255.0.0
Gateway address:
192.168.250.1

Hardware Installation 6
RTS 1-Port Installation
RTS 1-Port Installation
Use the following procedure to install the RTS 1-Port.
1. Record the MAC address, model number, and serial number of the
DeviceMaster RTS unit on the customer service label provided.
You may need the MAC address during driver configuration. The serial
number and MAC address are located on a label on the device. The MAC
address starts with 00 CO 4E.
2. Place the DeviceMaster RTS 1-Port on a stable surface or optionally mount the
RTS using the DIN rail adapters or mounting flanges.
3. Connect the RTS port labeled 10/100 ETHERNET to the same Ethernet
network segment as the host PC using a standard network cable.
If you plan on using the NS-Link device driver, make sure that you do
not connect RS-422/485 devices until the appropriate port interface
type has been configured in the driver. The NS-Link default port
setting is RS-232.
4. Apply power to the RTS by connecting the AC power adapter to the RTS and a
power source. If you want to provide your own power supply, see Power Supply
Specifications on Page 19.
5. Verify that the network connection for the RTS is
functioning properly.
• The amber Status LED on the device is lit,
indicating you have power and it has completed the
boot cycle.
Note: The Status LED flashes while booting and it
takes approximately 15 seconds for the
bootloader to complete the cycle.
•IftheredLink Act LED is lit, it indicates a working
Ethernet connection.
• If the red Duplex LED is lit, it indicates full-duplex
activity.
•Ifthered100 LED is lit, it indicates a working 100 MB Ethernet connection
(100 MB network, only).
6. Go to Configuring the Network Setup on Page 12 for default network settings
and how to configure the RTS for use.
Caution
Larger Picture, Page 22

Hardware Installation 7
RTS 4/8-Port Installation
RTS 4/8-Port Installation
Use the following procedure to install the RTS 4 or RTS 8.
1. Record the MAC address, model number, and serial number of the
DeviceMaster RTS unit on the customer service label provided.
You may need the MAC address during driver configuration. The serial
number and MAC address are located on a label on the device. The MAC
address starts with 00 CO 4E.
2. Place the RTS on a stable surface.
3. Connect the RTS to the same Ethernet network segment as the host PC using
one of the following methods:
•Ethernet hub or switch (10/100Base-T): Connect to the port labeled UP
on the RTS using a standard Ethernet cable.
•Server NIC (10/100Base-T): Connect to the port labeled DOWN on the
RTS using a standard Ethernet cable.
•Daisy-chaining DeviceMaster RTS units: Connect the port labeled
DOWN on the first RTS to the port labeled UP on the second RTS or other
device using a standard Ethernet cable.
Note: Do not connect multiple units until you have changed the default IP
address, see Default Network Settings on Page 12.
If you plan on using the NS-Link device driver, make sure that you do
not connect RS-422/485 devices until the appropriate port interface
type has been configured in the driver. The NS-Link default port
setting is RS-232.
4. Apply power to the RTS by connecting the AC power adapter to the RTS, the
appropriate power cord for your location to the power adapter, and plugging
the power cord into a power source. If you want to provide your own power
supply, see Power Supply Specifications on Page 19.
5. Verify that the network connection for the RTS is functioning properly.
•TheredPWR LED on the front panel of the RTS is lit, indicating you have
power and it has completed the boot cycle.
Note: The PWR LED flashes while booting and it takes approximately 15
seconds for the bootloader to complete the cycle.
•TheredLNK ACT LED is lit, indicating that
you have a working Ethernet connection.
• If the red 100 LED is lit, it indicates a
working 100 MB Ethernet connection (100
MB network, only).
6. Go to Configuring the Network Setup on Page
12 for default network settings and how to
configure the RTS for use.
Larger Picture, Page 23
Larger Picture, Page 24 Larger Picture, Page 24
Larger Picture, Page 23
Caution
LNK
ACT
COL
100
10/100 NETWORK
UP DOWN
If the red COL LED is lit,
there is a network collision.

Hardware Installation 8
RTS 16-Port Installation - External Power Supply
RTS 16-Port Installation - External Power Supply
Use the following procedure to install the RTS 16 with an external power supply.
1. Record the MAC address, model number, and serial number of the
DeviceMaster RTS unit on the customer service label provided.
You may need the MAC address during driver configuration. The serial
number and MAC address are located on a label on the device. The MAC
address starts with 00 CO 4E.
2. Place the RTS on a stable surface, or optionally mount the RTS in a rack.
Rack Installation:
a. Attach the L brackets to the interface using the screws supplied with the
unit.
b. You can mount the unit facing in either direction.
c. Attach the L bracket into your rack.
Follow these guidelines when mounting the RTS in a rack.
• If the RTS is installed in a closed or multi-rack assembly, the
operating temperature of the rack environment may be greater
than the ambient temperature. Be sure to install the RTS in an
environment that is compatible with the maximum rated ambient
temperature (Environmental Specifications on Page 21).
• Make sure that the mechanical loading is level to avoid a
hazardous condition; such as, loading heavy equipment in the rack
unevenly. The rack should safely support the combined weight of
all equipment in the rack.
• Slots and openings in the cabinet are provided for ventilation. To
ensure reliable operation of the RTS and to protect it from
overheating, maintain a minimum of 1 inch of clearance on all
sides of the unit.
• AC power inputs are intended to be used with a three-wire
grounding type plug, which has a grounding pin. Equipment
grounding ensures safe operation. Do not defeat the grounding
means and verify that the RTS is reliably grounded when mounting
within the rack.
3. Connect the RTS to the same Ethernet network segment as the host PC using
one of the following methods.
•Ethernet hub or switch (10/100Base-T): Connect to the port labeled UP
on the RTS using a standard Ethernet cable.
•Server NIC (10/100Base-T): Connect to the port labeled DOWN on the
RTS using a standard Ethernet cable.
•Daisy-chaining RTS units: Connect the port labeled DOWN on the first
RTS to the port labeled UP on the second RTS or other device using a
standard Ethernet cable.
Note: Do not connect multiple units until you have changed the default IP
address, see Default Network Settings on Page 12.
If you plan on using the NS-Link device driver, make sure that you do
not connect RS-422/485 devices until the appropriate port interface
type has been configured in the driver. The NS-Link default port
setting is RS-232.
Larger picture, Page 24
Caution
Caution

Hardware Installation 9
RTS 16-Port Installation - External Power Supply
4. Apply power to the RTS by connecting the AC power adapter to the RTS, the
power cord to the power adapter, and plugging the power cord into a power
source. See Power Supply Specifications on Page 19 if you want to provide
your own power supply.
5. Verify that the network connection for the RTS is functioning properly.
• The amber or red PWR LED on the front
panel of the DeviceMaster RTS is lit,
indicating you have power and it has
completed the boot cycle.
Note: The PWR LED flashes while booting
and it takes approximately 15
seconds for the bootloader to
complete the cycle.
•TheredLNK ACT LED is lit, indicating that you have a working Ethernet
connection.
•Ifthered100 LED is lit, it indicates a working 100 MB Ethernet connection
(100 MB network, only).
6. Go to Configuring the Network Setup on Page 12 for default network settings
and how to configure the RTS for use.
LNK
ACT
COL
100
10/100 NETWORK
UP DOWN
If the red COL LED is lit,
there is a network collision.

Hardware Installation 10
RTS 16/32RM Installation - Internal Power Supply
RTS 16/32RM Installation - Internal Power Supply
Use the following procedure to install the RTS 16/32RM with an internal power
supply.
1. Record the MAC address, model number, and serial number of the
DeviceMaster RTS unit on the customer service label provided.
You may need the MAC address during driver configuration. The serial
number and MAC address are located on a label on the device. The MAC
address starts with 00 CO 4E.
2. Place the RTS on a stable surface, or optionally mount the RTS in a rack.
Rack Installation:
a. Attach the L brackets to the interface using the screws supplied with the
unit.
b. You can mount the unit facing in either direction.
c. Attach the L bracket into your rack.
Follow these guidelines when mounting the RTS in a rack.
• If the RTS is installed in a closed or multi-rack assembly, the
operating temperature of the rack environment may be greater
than the ambient temperature. Be sure to install the RTS in an
environment that is compatible with the maximum rated ambient
temperature (Environmental Specifications on Page 21).
• Make sure that the mechanical loading is level to avoid a
hazardous condition; such as, loading heavy equipment in the rack
unevenly. The rack should safely support the combined weight of
all equipment in the rack.
• Slots and openings in the cabinet are provided for ventilation. To
ensure reliable operation of the RTS and to protect it from
overheating, maintain a minimum of 1 inch of clearance on all
sides of the unit.
• AC power inputs are intended to be used with a three-wire
grounding type plug, which has a grounding pin. Equipment
grounding ensures safe operation. Do not defeat the grounding
means and verify that the RTS is reliably grounded when mounting
within the rack.
3. Connect the RTS port labeled 10/100 NETWORK to the same Ethernet network
segment as the host PC using a standard network cable.
Caution
Larger picture, Page 24
Larger picture, Page 24

Hardware Installation 11
Adding a Unit to an Existing Installation
If you plan on using the NS-Link device driver, make sure that you do
not connect RS-422/485 devices until the appropriate port interface
type has been configured in the driver. The NS-Link default port
setting is RS-232.
4. Apply power to the RTS by connecting the appropriate power cord into the
power socket on the RTS, plugging the power cord into a power source, and
turning on the power switch.
5. Verify that the network connection for the RTS is functioning properly.
• The amber Status LED on the device is lit, indicating
you have power and it has completed the boot cycle.
Note: The Status LED flashes while booting and it
takes approximately 15 seconds for the
bootloader to complete the cycle.
•TheredLNK ACT LED is lit, indicating that you have a working Ethernet
connection.
•Ifthered100 LED is lit, it indicates a working 100 MB Ethernet connection
(100 MB network, only).
• If the red Duplex LED is lit, it indicates full-duplex activity.
6. Go to Configuring the Network Setup on Page 12 for default network settings
and how to configure the RTS for use.
Adding a Unit to an Existing Installation
Use this procedure to add another DeviceMaster RTS to an existing configuration.
1. Install the DeviceMaster RTS to an Ethernet hub or server NIC using the
appropriate subsection found in Installation Overview.
Note: Technical support recommends installing one unit at a time and testing
that unit when installing multiple units. In the event troubleshooting
must be done, a single unit is much easier to resolve than several at
once.
2. Power-up the new RTS and verify that the PWR or Status LED lights.
3. If required, program an IP address into the new RTS.
4. Configure serial ports to support the serial devices.
Replacing Hardware
Follow this procedure, to replace an RTS with another RTS in an existing
configuration.
1. Configure the IP address in the new RTS.
2. Remove the old unit and attach a new or spare DeviceMaster RTS.
3. Connect the new DeviceMaster RTS to the network hub or server NIC.
4. Apply power to the new RTS and verify that it passes the power on self-test.
5. If you are using NS-Link, change the MAC or IP address of the new RTS in the
NS-Link driver to reflect the new unit.
6. If using socket mode, configure any RS-422 or RS-485 ports as necessary to
match the previous unit.
7. Transfer all cabling from the old RTS to the new DeviceMaster RTS.
8. It is not necessary to shut down and restart the server.
Caution
LNK
ACT
Duplex
100
10/100 ETHERNET

Configuring the Network Setup 12
Configuring the Network Setup
This section provides an overview of the DeviceMaster RTS configuration.
Depending upon how you plan on communicating to the DeviceMaster RTS will
determine what procedures you need to perform to configure the RTS. Refer to the
installation document for your operating system for an overview of the advantages
of MAC or IP addressing. See Locating the NS-Link Drivers and Installation
Documentation to locate the appropriate document.
Default Network Settings
All RTS models have the following network settings from the factory.
• IP address: 192.168.250.250
• Subnet mask: 255.255.0.0
• Gateway address: 192.168.250.1
Programming the IP Address
If you are planning on using an IP address to control the RTS, you should take into
consideration how you plan on using the serial ports. The ports can be configured
with COM or TTY characteristics and as sockets.
• To configure the ports for COM or TTY characteristics, you must install an
NS-Link driver. After configuring the IP address and the port characteristics,
you can also configure the socket characteristics using the NS-Link
SocketServer. See Locating the NS-Link Drivers and Installation
Documentation (below) for details.
• To configure the ports for only socket characteristics, you will use Redboot to
program the IP address and then configure the socket characteristics using
SocketServer. See the Configuring RTS Network Information. You can
download the latest copy of the guide at, ftp://ftp.comtrol.com/Dev_Mstr/RTS/
Setup_Docs/Config_Network/Config_Network.pdf.
Configuring for MAC Address Usage
If you are planning on using a MAC address to communicate with the
DeviceMaster RTS, the RTS must be on the same network segment as the host
server. To use MAC addressing, install one of the NS-Link device drivers below.

Configuring the Network Setup 13
Locating the NS-Link Drivers and Installation Documentation
Locating the NS-Link Drivers and Installation Documentation
You can use the drivers on the CD, but you may want to download the latest driver
and installation document using these hyperlinks to the ftp site.
If you want the use the files on the CD that shipped with your product, insert the
CD and follow the menu system to install the driver. If the menu system does not
launch after you insert the CD, use the readme.pdf file at the root of the CD to
locate the NS-Link driver and associated installation documentation.
Operating
System
ftp://ftp.comtrol.com/Dev_Mstr/RTS/Drivers/
Driver Installation Document
Linux /linux/ /Linux/SW_Doc/
Windows 2000 /Win2000 /Win2000/SW_Doc/
Windows NT /WinNT /WinNT/SW_Doc/

Connecting Serial Devices 14
Connecting Serial Devices
This section contains the following topics:
• Connecting your serial devices
• Building cables
• Serial connector pinouts
• Building loopback connectors to test ports
Note: Go to Building the Serial Ribbon Cable on Page 33 for connector
information for the RTS 1-Port Embedded adapter.
Connecting Devices
Use this procedure to connect asynchronous serial devices to the RTS ports.
Make sure that you have configured the ports using the NS-Link driver
or SocketServer for the correct communications mode before
connecting any devices. The default mode in the NS-Link drivers is RS-
232. There is a remote possibility that connecting a peripheral for the
wrong mode could damage the peripheral.
1. Connect your serial devices to the appropriate port on the DeviceMaster RTS
using the appropriate cable. You can build your own cables using the Building
Cables for Serial Devices discussion (Page 14).
Note: Refer to the hardware manufacturer’s installation documentation if you
need help with connector pinouts or cabling for the peripheral device.
2. Verify that the devices are communicating properly:
• The amber Rx LEDs shows that the port is
connected to another RS-232 device or
receiving data in RS-422/485 mode.
• The green Tx LED shows that the data is
transmitting.
Note: The port LED activity on the RTS 16/32RM
may be inconsistent until the port has been
opened. After a port is opened the LED
activity works as documented.
Building Cables for Serial Devices
You can build your own null-modem or straight-through serial cables using:
•Building Null-Modem Cables (RS-232) on Page 15
•Building Straight-Through Cables (RS-232/485) on Page 15
•DB9 Connector Pinouts on Page 16
•Building Additional DB9 Loopback Plugs on Page 16
•RJ45 Connector Pinouts on Page 16
•Building Additional RJ45 Loopback Plugs on Page 17
•Building an RS-485 Test Cable on Page 17
Caution
TX1 *
RX1*
DB9 LEDs
RJ45 LEDs
Rx
Tx
Rx
Tx
* Represents port number.

Connecting Serial Devices 15
Building Null-Modem Cables (RS-232)
Building Null-
Modem Cables
(RS-232)
Use the following figure if you need to build an RS-232 null-modem cable. A null-
modem cable is required for connecting DTE devices.
Note: You may want to purchase or build a straight-through cable and purchase a
null-modem adapter.
Building Null-
Modem Cables
(RS-422)
Use the following figure if you need to build an RS-422 null-modem cable. A null-
modem cable is required for connecting DTE devices.
Note: RS-422 pinouts are not standardized. Each peripheral manufacturer uses
different pinouts. Please refer to the documentation for the peripheral to
determine the pinouts for the signals above.
Building Straight-
Through Cables
(RS-232/485)
Use the following figure if you need to build an RS232 or RS-485 straight-through
cable. Straight-through cables are used to connect modems and other DCE
devices.
DeviceMaster RTS
TxD
RxD
RTS
CTS
DSR
GND
DCD
DTR
Signal
RxD
TxD
CTS
RTS
DTR
GND
DCD
DSR
Signal
DB9
2
3
8
7
4
5
1
6
Pins DB25
3
2
4
7
8
6
Pins
RJ45
4
5
1
8
7
3
6
2
Pins
20
5
Female
RI N/A 922 RI
DB9
3
2
7
8
6
5
1
4
Pins
9
RJ45
5
4
1
3
6
7
Pins
2
8
N/A
DeviceMaster RTS
TxD+
TxD-
RxD+
Signal RJ45
1
4
8
Pins
Female
DB9
7
3
8
Pins
RxD+
RxD-
Signal
RJ45
Pins
RxD- 2 5
TxD+
TxD-
DeviceMaster RTS
DB9
1
2
3
4
5
8
6
7
Pins
DCD
RxD
TxD or TRx-
DTR
GND
CTS
DSR
RTS or TRx+
Signal
DB9
1
2
3
4
5
8
6
7
Pins
DCD
RxD
TxD or TRx-
DTR
GND
CTS
DSR
RTS or TRx+
Signal
Female
RI 9 9RI
RJ45
6
5
4
2
3
8
7
1
Pins
N/A
RJ45
6
5
4
2
3
8
7
1
Pins
N/A
DB25
8
3
2
20
7
5
6
4
Pins
22

Connecting Serial Devices 16
RTS Connector Pinouts
RTS Connector Pinouts
Use the appropriate subsection if you need information about the serial connectors
on the RTS, including:
• Signal information for each communications mode.
• How to build a loopback plug or cable to test a port.
DB9 Connector
Pinouts
Use the following pinout information for the DB9 serial port connectors on the
DeviceMaster RTS.
Building Additional
DB9 Loopback Plugs
Loopback connectors are DB9 female serial port plugs, with pins wired together as
shown, that are used in conjunction with application software to test serial ports.
The DeviceMaster RTS is shipped with a a single loopback plug (RS-232/422).
Note: Drivers for Windows 98 and Windows NT are bundled with the Test
Terminal (WCOM32) program. Linux users can use MiniCom. See the NS-
Link driver documentation for your operating system for information about
using these applications.
Wire the following pins together to build additional plugs or replace a missing RS-
232 loopback plug:
• Pins 1 to 4 to 6
•Pins2to3
• Pins 7 to 8 to 9
Wire the following pins together for an RS-422 loopback plug:
•Pins2to3
•Pins7to8
RJ45 Connector
Pinouts
Use the following pinout information for the RJ45 serial port connectors on the
DeviceMaster RTS.
Pin 1 Pin 6
DB9 Male
RS-232
RI
CTS
RTS
DSR
GND
DTR
TxD
RxD
CD Pin 1 Pin 6
DB9 Male
RS-422
Not used
RxD+
TxD+
Not used
Not used*
Not used
TxD-
RxD-
Not used
Pin 1 Pin 6
DB9 Male
RS-485
Not used
Not used
TxD/RxD+
Not used
Not used*
Not used
TxD/RxD-
Not used
Not used
* Pin 5 is tied to ground on the board,
but is not used in the cable.
Pin 1 Pin 5
Pin 6 Pin 9
RS-232 Only
(Back View)
The RS-232 loopback plug
also works for RS-422.
Pin 1 Pin 5
Pin 6 Pin 9
RS-422 Only
(Back View)
RS-232
RTS
DTR
Signal GND
TxD
RxD
DCD
DSR
CTS
Pin 1
RJ45
RS-422
TxD+
Not used
Not used**
TxD-
RxD-
Not used
Not used
RxD+
Pin 1
RJ45
RS-485
TxD/RxD+
Not used
Not used**
TxD/RxD-
Not used
Not used
Not used
Not used
Pin 1
RJ45
** Pin 3 is tied to ground on the board,
but is not used in the cable.

Connecting Serial Devices 17
Building Additional RJ45 Loopback Plugs
Building Additional
RJ45 Loopback
Plugs
Loopback connectors are RJ45 serial port plugs, with pins wired together as
shown, that are used in conjunction with application software to test serial ports.
The DeviceMaster RTS is shipped with a a single loopback plug (RS-232/422).
•Pins4to5
•Pins1to8
• Pins 2 to 6 to 7
Note: Drivers for Windows 98
and Windows NT are
bundled with the Test
Terminal (WCOM32) program. Linux users can use MiniCom. See the NS-
Link driver documentation for your operating system for information about
using these applications.
Building an RS-485
Test Cable
You can use a straight-through cable as illustrated previously, or build your own
cable.
18
Plug
Top View
Cable
The RS-232 loopback plug also
works for RS-422.
TxD or TRX-
RTS or TRX+
Signal
TxD or TRX-
RTS or TRX+
Signal RJ45
4
1
Pins

RTS Specifications 18
RTS Specifications
The following subsections contain specifications and safety notices for the
DeviceMaster RTS family.
Electromagnetic Compliances
This table lists electromagnetic compliances for the DeviceMaster RTS family.
Electromagnetic Compliances Status
Emission:
Canadian EMC requirements ICES-003: 1997
CISPR-22: 1997
European Standard EN55022: 1998
Amendment A1: 2000
IEC 1000-3-2/EN61000-3-2: Harmonic
IEC 1000-3-3/EN61000-3-3: Flicker
FCC Part15 Subpart B: Class A limit
Yes
Immunity: EN55024: 1998
IEC 1000-4-2: EN61000-4-2: 1995 ESD
IEC 1000-4-3: EN61000-4-3: 1996 RF
IEC 1000-4-4: EN61000-4-4: 1994 Fast Transient
IEC 1000-4-5: EN61000-4-5: 1995 Surge
IEC 1000-4-6: EN61000-4-6: 1996 Conducted disturbance
IEC 1000-4-8: EN61000-4-8: 1994 Magnetic field
IEC 1000-4-11: EN61000-4-11: 1994 Dips and Voltage Variations
Yes
Safety:
IEC 60950/EN60950
CSA C22.2 No. 60950/UL 60950, Third Edition
Yes

19
Power Supply Specifications
Power Supply Specifications
This subsection discusses information that you may need if you wish to use your
own external power supplies on the following products:
• DeviceMaster RTS 1-port models
• DeviceMaster RTS 4 and 8-port models
• DeviceMaster RTS Rack Mount 16 (RM16)
This table provides other data that you may require about the external power
supply (if supplied).
Power Connector Model External Power
Supply Specification
Coaxial 5.5±0.1 x 2.1 mm
1-Port
Input line frequency
Input line voltage
Output voltage†
Output current†
60 Hz
90 - 132VAC
5VDC††
420 mA (Min) @ 5VDC
Housing Molex P/N:
39-01-4030
Pins Molex P/N:
44485-1211
4-Port
Input line frequency
Input line voltage
Output voltage†
Output current†
47 - 63 Hz
90 - 260VAC
9-30VDC††
200 mA (Min) @ 24VDC
8-Port
Input line frequency
Input line voltage
Output voltage†
Output current†
47 - 63 Hz
90 - 260VAC
9-30VDC††
290 mA (Min) @ 24VDC
RM16
Input line frequency
Input line voltage
Output voltage†
Output current†
47 - 63 Hz
90 - 260VAC
9-30VDC††
490 mA (Min) @ 24VDC
†Any power supply that meets output current and voltage requirements, and
connector pinouts can be used.
†† The output voltage is plus or minus 5%.
-+VDC
+VDC
V Return - GND
Shield GND

20
Hardware Specifications
Hardware Specifications
The following table lists hardware specifications for the RTS. See Power Supply
Specifications above for detailed power supply specification information.
Topic Specification
Current consumption:
RTS 1 models
RTS 4
RTS 8
RTS 16 with external power supply
RTS 16RM with internal power supply
RTS 32RM
420 mA @ 5VDC
200 mA @ 24VDC
290 mA @ 24VDC
490 mA @ 24VDC
130 mA @ 110VAC
200 mA @ 110VAC
Power consumption:
RTS 1 models
RTS 4
RTS 8
RTS 16 with external power supply
RTS 16RM with internal power supply
RTS 32RM
2.1 W
4.8 W
6.96 W
11.76 W
14.3 W
22.0 W
Processor type ARM7
Memory 8MB SDRAM/4MB flash
Real time clock (RTS 4/8/16 with external
power supply, only)
Battery backup, 256B RAM,
watchdog time/power off monitor
Baud rate/port (maximum) 230.4 Kbps
Ethernet host interface
(Downstream port available with some
models)
10/100Base-T
(10/100 Mbps - RJ45)
Serial interface RS-232, RS-422, and RS-485
Serial connector types:
RTS 1
RTS 1 Embedded System
4/8-Port models
16/32-Port models
DB9
Header, IDC10
DB9 and DB9 to RJ45 adapter
RJ45
Network default values:
IP address
Subnet mask
Gateway
192.168.250.250
255.255.0.0
192.168.250.1
Network protocols
TCP, UDP, BOOTP, TFTP, ICMP,
ARP, SNMP (MIB-II), Telnet,
HTTP
NS-Link control:
Data bits
Parity
Stop bits
7 or 8
Odd, Even, None
1 or 2
SNMP support Monitoring only.
Continued