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.
Installation and Configuration Overview .............................................................................................................................. 7
NS-Link COM Port Driver Installation....................................................................................................................................................7
Step 3: Program the DeviceMaster IP Address............................................................................................................................7
Step 4: Install NS-Link Device Driver for Windows ..................................................................................................................7
Step 5: Configure NS-Link Port Properties Page........................................................................................................................8
Step 7: Serial Device Connection...................................................................................................................................................... 8
Secure COM Port Redirector Installation Overview ........................................................................................................................ 8
Step 3: Program the DeviceMaster IP Address............................................................................................................................8
Step 6: Install the Port Redirector.................................................................................................................................................... 8
Step 7: Add and Configure the COM Port ......................................................................................................................................8
Step 8: Serial Device Connection...................................................................................................................................................... 8
NS-Link tty Port Installation Overview ................................................................................................................................................. 9
Step 3: Program the DeviceMaster IP Address............................................................................................................................9
Step 4: Install the NS-Link Device Driver for Linux.................................................................................................................. 9
Step 6: Serial Device Connection...................................................................................................................................................... 9
TCP/IP Socket Port Installation Overview...........................................................................................................................................9
Step 3: Program the DeviceMaster IP Address............................................................................................................................9
Step 5: Configure the Socket Ports................................................................................................................................................ 10
Step 6: Serial Device Connection................................................................................................................................................... 10
Locating Software and Documentation................................................................................................................................10
1-Port - Embedded Model .........................................................................................................................................................16
Building the Serial Ribbon Cable........................................................................................................................................................... 16
Mounting the Embedded .......................................................................................................................................................................... 17
Attaching the Network and Serial Cables .......................................................................................................................................... 18
Connecting the Power and Verifying Installation .......................................................................................................................... 18
4-Port and 8-Port Models..........................................................................................................................................................24
16-Port (DeviceMaster RTS - External Power Supply)....................................................................................................26
PortVision Plus Requirements................................................................................................................................................33
Installing PortVision Plus .........................................................................................................................................................33
Configuring the Network Settings ..........................................................................................................................................34
Checking the SocketServer Version.......................................................................................................................................36
Linux Installation.........................................................................................................................................................................39
Windows Installation .................................................................................................................................................................39
Windows Vista: NS-Link Installation................................................................................................................................................... 40
Windows XP and Windows Server 2003: NS-Link Installation ............................................................................................... 41
Windows 2000: NS-Link Installation .................................................................................................................................................. 42
Configuring the NS-Link Driver for Windows ....................................................................................................................43
Configuring COM Port Properties for Windows ................................................................................................................44
Secure COM Port Set Up.................................................................................................................................45
Secure COM Port Redirector Overview ................................................................................................................................45
Configuring Serial Ports and Enabling Security ................................................................................................................45
Installing the Secure COM Port Redirector .........................................................................................................................47
Configuring Secure Redirector COM Ports ..........................................................................................................................48
Adding a Secure Port .................................................................................................................................................................................. 48
Configuring the Secure COM Port ......................................................................................................................................................... 48
Socket Port Configuration ............................................................................................................................49
Web Browser ................................................................................................................................................................................................. 51
Web Manager Button ......................................................................................................................................................................... 51
Connecting Serial Devices ............................................................................................................................53
DeviceMaster 2-Port with Serial Terminals .......................................................................................................................56
Serial Terminal (4) Signals (1E) ............................................................................................................................................................ 56
Serial Terminal (8) Signals (2E) ............................................................................................................................................................ 57
DB9 Serial Cables and Loopback Plugs.................................................................................................................................59
RJ45 Serial Cables and Loopback Plugs................................................................................................................................61
RS-485 Test Cable........................................................................................................................................................................................ 62
iv - Table of ContentsDeviceMaster Installation and Configuration Guide: 2000506 Rev. B
Table of Contents
DeviceMaster 1E (Serial Terminals) Cables and Loopbacks.........................................................................................63
Serial Terminal (4) Null-Modem Cables (RS-232)......................................................................................................................... 63
Serial Terminal (4) Null-Modem Cables (RS-422)......................................................................................................................... 63
Serial Terminal (4) Straight-Through Cables (RS-232/485) .................................................................................................... 64
1E Loopback Signals ................................................................................................................................................................................... 64
DeviceMaster 2E (Serial Terminals) Cables and Loopbacks.........................................................................................65
Serial Terminal (8) Null-Modem Cables (RS-232)......................................................................................................................... 65
Serial Terminal (8) Null-Modem Cables (RS-422)......................................................................................................................... 65
Serial Terminal (8) Straight-Through Cables (RS-232/485) .................................................................................................... 66
2E Loopback Signals ................................................................................................................................................................................... 66
Managing the DeviceMaster.........................................................................................................................67
Rebooting the DeviceMaster....................................................................................................................................................67
Uploading SocketServer to Multiple DeviceMasters........................................................................................................68
Using Configuration Files..........................................................................................................................................................69
Checking the Bootloader Version.......................................................................................................................................................... 70
Adding a DeviceMaster to an Existing Installation...........................................................................................................72
Replacing a DeviceMaster.........................................................................................................................................................72
Device Programmed with IP Address ................................................................................................................................................. 72
Device Programmed with MAC Address............................................................................................................................................ 72
Restoring Serial Port Settings..................................................................................................................................................73
NS-Link COM Port ........................................................................................................................................................................................ 73
Establishing a Serial Connection ........................................................................................................................................................... 75
Establishing a Telnet Connection.......................................................................................................................................................... 76
Determining the Network Settings ........................................................................................................................................77
Configuring the Network Settings..........................................................................................................................................77
Determining the Bootloader Version....................................................................................................................................78
Resetting the DeviceMaster......................................................................................................................................................78
Serial Method................................................................................................................................................................................................. 79
Serial Communications..............................................................................................................................................................85
External Power Supply Specifications ..................................................................................................................................87
1-Port 5VDC Power Supply......................................................................................................................................................................87
1-Port 5-30VDC Power Supply............................................................................................................................................................... 87
2-Port (Serial Terminals) Power Supply ........................................................................................................................................... 88
2-Port (DB9) Power Supply.....................................................................................................................................................................88
4-Port Power Supply .................................................................................................................................................................................. 88
8-Port Power Supply .................................................................................................................................................................................. 88
16-Port Power Supplies ............................................................................................................................................................................ 89
DeviceMaster Installation and Configuration Guide: 2000506 Rev. B Table of Contents - v
2-Port (Single Ethernet Port) with Serial Terminals.................................................................................................................... 92
2-Port (Dual Ethernet Ports) with Serial Terminals..................................................................................................................... 92
Radio Frequency Interference (RFI) (FCC 15.105) ....................................................................................................................... 96
Important Safety Information ................................................................................................................................................................ 96
Troubleshooting and Technical Support.................................................................................................97
General Troubleshooting..........................................................................................................................................................99
vi - Table of ContentsDeviceMaster Installation and Configuration Guide: 2000506 Rev. B
Introduction
This section provides an installation and configuration overview for the DeviceMaster
platform:
•DeviceMaster PRO
•DeviceMaster RTS
•DeviceMaster Serial Hub
In addition, it provides links to download the latest files for the DeviceMaster installation.
Optionally, you can use the Software and Documentation CD to install the DeviceMaster.
Installation and Configuration Overview
There are four basic installations depending on your requirements. You can use the
appropriate overview to install and configure the DeviceMaster for your environment.
•NS-Link COM port device driver
•Secure COM port redirector
•NS-Link tty port device driver
•TCP/IP socket port
NS-Link COM Port
Driver Installation
Step 1: Hardware
Installation
Step 2: Install
PortVision Plus
Step 3: Program the
DeviceMaster IP
Address
Step 4: Install NS-Link
Device Driver for
Windows
Use the following steps, which are discussed in detail in the subsequent sections, to install
and configure the DeviceMaster to run the NS-Link device driver for Windows operating
systems.
•Step 1: Hardware Installation
•Step 2: Install PortVision Plus
•Step 3: Program the DeviceMaster IP Address
•Step 4: Install NS-Link Device Driver for Windows
•Step 5: Configure NS-Link Port Properties Page on Page 8
•Step 6: Configure Socket Ports on Page 8
•Step 7: Serial Device Connection on Page 8
Power up the DeviceMaster. Technical Support suggests installing one DeviceMaster at a
time to avoid configuration problems. Refer to Hardware Installation
detailed installation procedures for your DeviceMaster model.
Comtrol recommends connecting the DeviceMaster to a PC or laptop running Windows®
2000/XP/2003/Vista so that you can install PortVision Plus for easy IP address
configuration. See PortVision Plus Requirements
Installing PortVision Plus
See Configuring the Network Settings on Page 34 for detailed configuration procedures.
See Windows Installation on Page 39 for an installation overview of the NS-Link driver for
each Windows operating system.
on Page 33 to install PortVision Plus.
on Page 7
on Page 13 for
on Page 33 and use then refer to
DeviceMaster Installation and Configuration Guide: 2000506 Rev. B Introduction - 7
Step 5: Configure NS-Link Port Properties Page
Step 5: Configure NSLink Port Properties
Page
Step 6: Configure
Socket Ports
Step 7: Serial Device
Connection
Secure COM Port
Redirector Installation
Overview
Step 1: Hardware
Installation
Configuring the NS-Link Driver for Windows on Page 43 provides and overview of COM
port configuration and Configuring COM Port Properties for Windows
Optionally, you may need to configure one or more ports for socket mode. See Socket Port
Configuration on Page 49 for information about configuring socket ports using the Server
Configuration web page.
Connect the serial devices to the DeviceMaster. Refer to Connecting Serial Devices on Page
53 for cabling and connector information.
Use the following steps, which are discussed in detail in the subsequent sections, to install
and configure the secure COM port redirector for the DeviceMaster.
•Step 1: Hardware Installation
•Step 2: Install PortVision Plus
•Step 3: Program the DeviceMaster IP Address
•Step 4: Update SocketServer
•Step 5: Configure SocketServer
•Step 6: Install the Port Redirector
•Step 7: Add and Configure the COM Port
•Step 8: Serial Device Connection
Power up the DeviceMaster. Technical Support suggests installing one DeviceMaster at a
time to avoid configuration problems. Refer to Hardware Installation on Page 13 for
detailed installation procedures for your DeviceMaster model.
Step 2: Install
PortVision Plus
Step 3: Program the
DeviceMaster IP
Address
Step 4: Update
SocketServer
Step 5: Configure
SocketServer
Step 6: Install the Port
Redirector
Step 7: Add and
Configure the COM Port
Step 8: Serial Device
Connection
Comtrol recommends connecting the DeviceMaster to a PC or laptop running Windows®
2000/XP/2003/Vista so that you can install PortVision Plus for easy IP address
configuration. See PortVision Plus Requirements
on Page 33 and use then refer to
Installing PortVision Plus on Page 33 to install PortVision Plus.
See Configuring the Network Settings on Page 34 for procedures on IP address
configuration procedures.
If necessary, update SocketServer. You can use Checking the SocketServer Version on Page
36 and then refer to Locating Software and Documentation on Page 10 to locate the latest
version on the web site. See Uploading SocketServer
on Page 37 if you need to update
SocketServer.
Configure the serial port characteristics and enable the security feature in the
SocketServer. Refer to Configuring Serial Ports and Enabling Security on Page 45 for
detailed set-up procedures.
Refer to Installing the Secure COM Port Redirector on Page 47 for installation procedures.
Refer to Configuring Secure Redirector COM Ports on Page 48 to complete the set up of the
secure COM port redirector.
Connect the serial devices to the DeviceMaster. Refer to Connecting Serial Devices on Page
53 for cabling and connector information.
8 - IntroductionDeviceMaster Installation and Configuration Guide: 2000506 Rev. B
NS-Link tty Port Installation Overview
NS-Link tty Port
Installation Overview
Step 1: Hardware
Installation
Step 2: Install
PortVision Plus
Step 3: Program the
DeviceMaster IP
Address
Step 4: Install the NSLink Device Driver for
Linux
Use the following steps, which are discussed in detail in the subsequent sections, to install
and configure the DeviceMaster to run the NS-Link device driver for Linux operating
systems.
•Step 1: Hardware Installation
•Step 2: Install PortVision Plus
•Step 3: Program the DeviceMaster IP Address
•Step 4: Install the NS-Link Device Driver for Linux
•Step 5: Configure Socket Ports
•Step 6: Serial Device Connection
Power up the DeviceMaster. Technical Support suggests installing one DeviceMaster at a
time to avoid configuration problems. Refer to Hardware Installation
on Page 13 for
detailed installation procedures for your DeviceMaster model.
Comtrol recommends connecting the DeviceMaster to a PC or laptop running Windows®
2000/XP/2003/Vista so that you can install PortVision Plus for easy IP address
configuration. See PortVision Plus Requirements
Installing PortVision Plus
on Page 33 to install PortVision Plus.
on Page 33 and use then refer to
See Configuring the Network Settings on Page 34 for procedures on IP address
configuration procedures.
Locate and unpackage the driver assembly. Refer to the readme file packaged with the
Linux driver assembly for driver installation and configuration procedures for the tty port.
Step 5: Configure
Socket Ports
Step 6: Serial Device
Connection
TCP/IP Socket Port
Installation Overview
Step 1: Hardware
Installation
Step 2: Install
PortVision Plus
Step 3: Program the
DeviceMaster IP
Address
Optionally, you may need to configure one or more ports for socket mode. See Socket Port
Configuration on Page 49 for information about configuring socket ports using the Server
Configuration web page.
Connect the serial devices to the DeviceMaster. Refer to Connecting Serial Devices on Page
53 for cabling and connector information.
Use the following steps, which are discussed in detail in the subsequent sections, to
configure DeviceMaster socket ports.
•Step 1: Hardware Installation
•Step 2: Install PortVision Plus
•Step 3: Program the DeviceMaster IP Address
•Step 4: Update SocketServer
on Page 10
•Step 5: Configure the Socket Ports on Page 10
•Step 6: Serial Device Connection on Page 10
Power up the DeviceMaster. Technical Support suggests installing one DeviceMaster at a
time to avoid configuration problems. Refer to Hardware Installation
on Page 13 for
detailed installation procedures for your DeviceMaster model.
Comtrol recommends connecting the DeviceMaster to a PC or laptop running Windows®
2000/XP/2003/Vista so that you can install PortVision Plus for easy IP address
configuration. See PortVision Plus Requirements
Installing PortVision Plus
on Page 33 to install PortVision Plus.
on Page 33 and use then refer to
See Configuring the Network Settings on Page 34 for procedures on IP address
configuration procedures.
DeviceMaster Installation and Configuration Guide: 2000506 Rev. B Introduction - 9
Step 4: Update SocketServer
Step 4: Update
SocketServer
If necessary, update SocketServer. You can use Checking the SocketServer Version on Page
36 and then refer to Locating Software and Documentation on Page 10 to locate the latest
version on the web site. See Uploading SocketServer
SocketServer.
Step 5: Configure the
Socket Ports
Step 6: Serial Device
Connection
Configure the serial socket ports using the PortVision Plus property pages or enter the IP
address in a web browser and use the SocketServer web pages.
Connect the serial devices to the DeviceMaster. Refer to Connecting Serial Devices on Page
53 for cabling and connector information.
Locating Software and Documentation
You can access the appropriate software assembly, PortVision Plus, and the DeviceMaster
documentation from the CD shipped with the DeviceMaster. Optionally, if you know what
you need for your installation, you can download the latest files using these internet links.
If you are not sure what files are required for your installation, each installation and
configuration overview also provides links to the required files in this Guide.
PortV ision Plus
SocketServer
Bootloader
on Page 37 if you need to update
SoftwareOperating SystemsWeb
Windows 2000 (32-bit)
Windows XP (32/64-bit)
Windows Server 2003 (32/64-bit)
Windows Vista (32-bit)
The firmware that comes preinstalled on your DeviceMaster
platform, which provides an interface
to TCP/IP socket mode configuration
and services.
The operating system that runs on
the DeviceMaster hardware during
the power on phase, which then
loads SocketServer.
NS-Link Device Drivers and Installation Documentation
Windows 2000 (32-bit)
Device driver (COM ports)
Windows XP (32/64-bit)
Windows Server 2003 (32/64-bit)
Windows Vista (32/64-bit)
NS-Link User Guide for
Windows
Linux (32/64-bit)Device driver (tty ports)
Secure COM Port Redirector
Windows 2000 (32-bit)
Windows XP (32/64-bit)
Windows Server 2003 (32/64-bit)
Secure COM port redirector
Windows Vista (32/64-bit)
10 - IntroductionDeviceMaster Installation and Configuration Guide: 2000506 Rev. B
Installation Document (this guide)
DeviceMaster Installation and Configuration Guide
Port Testing and Monitoring Applications
Developer’s Kit
Developer’s Kit
Windows 2000 (32-bit)
Windows XP (32/64-bit)
Windows Server 2003 (32/64-bit)
Windows Vista (32-bit)
Comtrol Utilities
(Test Terminal and Port
Monitor)†
Linux (32-bit)LCOM
† Test Terminal and Port Monitor are included in PortVision Plus.
In addition to the standard capabilities of the DeviceMaster they are also a fullyprogrammable, embedded computing, platform.
If you are interested in writing your own applications for the DeviceMaster or would like
information on how to obtain the Comtrol DeviceMaster Developer's Kit, see http://
www.comtrol.com/products/family/dmrtsdk or please contact your Comtrol sales
representative.
Note: The DeviceMaster PRO is shipped with the Developer’s Kit. The DeviceMaster RTS
supports the Developer’s Kit. The DeviceMaster Serial Hub is not supported in the
Developer’s Kit.
DeviceMaster Installation and Configuration Guide: 2000506 Rev. B Introduction - 11
Developer’s Kit
12 - IntroductionDeviceMaster Installation and Configuration Guide: 2000506 Rev. B
Installation Overview
Hardware Installation
The DeviceMaster enables communications with serial devices over an Ethernet network.
The DeviceMaster 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:
DeviceMaster PRO
Default Network Settings
IP address:
192.168.250.250
Subnet mask:
255.255.0.0
Gate way addres s:
192.168.250.1
DB9 serial ports with dual
Ethernet†† ports
RJ45 serial ports with dual
Ethernet†† ports
DB9 serial port with a single
Ethernet port
Embedded system11-Port - Embedded Model on Page 16
Screw terminal serial ports2‡
DB9 serial ports2‡2-Port (DB9) 1E/2E Models on Page 22
DB9 serial ports with dual
Ethernet†† ports
RJ45 serial ports with dual
Ethernet†† ports
RJ45 serial ports with a single
Ethernet port
DB9 serial ports with dual
Ethernet†† ports
DB9 serial ports with a single
Ethernet port
†The DeviceMaster RTS 4 and 8-port models may also include DB9 to RJ45 adapters.
††One of the Ethernet ports on the DeviceMaster is a built-in downstream port for
daisy-chaining DeviceMaster systems or other network-ready devices.
‡Either Ethernet port on the DeviceMaster RTS 2-port 2E model can be used for daisy-
chaining DeviceMaster systems or other network-ready devices.
8†4-Port and 8-Port Models
1616-Port (DeviceMaster PRO) on Page 28
DeviceMaster RTS
11-Port - Enclosed Models
2-Port (Serial Terminal) 1E/2E Models on Page
20
4† or
8†
16
16 or 3216/32-Port Rack Mount Models (Internal Power
DeviceMaster Serial Hub
84-Port and 8-Port Models
16
4-Port and 8-Port Models on Page 24
16-Port (DeviceMaster RTS - External Power
Supply) on Page 26
Supply) on Page 30
16/32-Port Rack Mount Models (Internal Power
Supply) on Page 30
on Page 24
on Page 14
on Page 24
DeviceMaster Installation and Configuration Guide: 2000506 Rev. B Hardware Installation - 13
1-Port - Enclosed Models
M4
DIN Rail
Clip
Side View
Presshere
FrontView
DeviceMaster
Caution
1-Port - Enclosed Models
Use the following procedure to install the DeviceMaster 1-Port.
1.Record the MAC address and serial number of the DeviceMaster on the customer
service label provided.
You may need the MAC address during driver configuration. The MAC address (starts
with 00 C0 4E) and serial number are located on a label on the DeviceMaster.
Note: Do not connect multiple units until you have changed the default IP address, see
Initial Configuration
2.Place the 1-Port on a stable surface and skip to Step 3
on Page 33.
or optionally mount the
DeviceMaster using the mounting flanges or DIN rail adapters.
a.Pick up the DeviceMaster so that the front of the device is facing you.
b.Pick up a DIN rail clip. (The three tines should be on top and
the M4 label should face you.)
c.Slide the DIN rail clip behind the DeviceMaster and line it up
with one of the screw holes o n the De vi ce Master.
d.I ns e r t t he M4 screw into the hole and tighten with a Phillips
screwdriver.
e.Repeat Steps b
through d with the second DIN rail clip. Make
sure the screws on both DIN rail clips line up.
Note: If you need to remove the DeviceMaster from the DIN
rail, exert pressure on the backside of the tabs at the
bottom of both DIN rail clips.
f.Attach the DeviceMaster to the DIN rail.
3.Connect the DeviceMaster 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 DeviceMaster using the appropriate procedure for your power
supply.
Note: The supported input voltage (5VDC or 5-30VDC) is printed on the DeviceMaster.
5VDC Power Supply (Barrel Connector)
•Connect the 5VDC power supply to the DeviceMaster and to a power outlet.
•Go to Step 5
14 - Hardware InstallationDeviceMaster Installation and Configuration Guide: 2000506 Rev. B
to verify that the DeviceMaster is functioning properly.
1-Port - Enclosed Models
Caution
Earth Gnd
Return
Positive
5-30VDC
+
-
Wire gauge:
AWG 12-22
Screw Terminal Power Connector
5-30VDC with Screw Terminal Power Connector
Use the following procedure power on this model.
Observe proper ESD techniques when connecting and disconnecting the
DeviceMaster.
•Insert the earth ground wire into the earth ground screw terminal.
•Insert the DC positive wire into the positive
screw terminal and the DC return wire into
the return screw terminal.
If you purchased the Comtrol power supply
(separately), the wires are identified below:
-Red = 5-30VDC positive
-White = 5-30VDC return
-Black = earth ground
If you did not purchase a power supply from
Comtrol for the DeviceMaster, see 1-Port
530VDC Power Supply on Page 87 for power
requirements.
•U se a small fla t head s cre w to lock th e wi res
into place.
•Verify that each wire has been tightened securely.
•Plug the screw terminal power connector into the
DeviceMaster.
Note: Align the plug properly. The scalloped side of the
screw terminal power connector should be aligned
with the scalloped side of the power jack on the
unit.
•Connect the power supply to a power source.
•Go to Step 5
to verify that the DeviceMaster is functioning
properly.
5.Verify that the Status LED has completed the boot cycle and
network connection for the DeviceMaster is functioning
properly using the table below.
Status
Link/ActIf the red Link/Act LED is lit, it indicates a working Ethernet connection.
DuplexIf the red Duplex LED is lit, it indicates full-duplex activity.
100
Note: For additional LED information, go to the Status LED table on Page 97.
6.Go to Initial Configuration
DeviceMaster Installation and Configuration Guide: 2000506 Rev. B Hardware Installation - 15
configure the DeviceMaster for use.
1-Port Enclosed LED Descriptions
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. When the
Bootloader completes the cycle, the LED has a solid, steady light
that blinks approximately every 10 seconds.
If the red 100 LED is lit, it indicates a working 100 MB Ethernet
connection (100 MB network, only). If the LED is not lit, it indicates a 10
MB Ethernet connection.
on Page 33 for default network settings and how to
1-Port - Embedded Model
Caution
Pin 1
Pin 6
1
2
9 10
Ribbon Cable
10-Pin
Socket
Pin 5
Pin 9
DB9
Male
J3
1 - Po r t - E m b e dde d M o de l
Installing the DeviceMaster 1-Port Embedded system follows these basic steps:
•Building the serial ribbon cable (below).
•Mounting the Embedded
•Attaching the Network and Serial Cables
•Connecting the Power and Verifying Installation
on Page 17 and installing light pipes.
on Page 18.
on Page 18.
Observe proper ESD techniques when handling the DeviceMaster.
Building the Serial
Ribbon Cable
Use the following information to build a DB9 serial ribbon cable to connect to the
Use the following procedure to mount the DeviceMaster 1-Port Embedded with the 530VDC power supply.
Observe proper ESD techniques when handling the DeviceMaster.
1.Carefully remove the DeviceMaster from the anti-static bag, following standard
electrostatic device handling procedures.
Note: Write down the MAC address located on a label on the bottom (solder side)
center of the DeviceMaster because you may need it during configuration.
2.Mount the DeviceMaster for your environment using 1/4” stand-offs to separate the
DeviceMaster from the base.
3.Use one of the following methods to ground the DeviceMaster.
•Through the power supply by connecting the ground wire on the power cable
using plastic or metal stand-offs.
•Through the chassis, using metal stand-offs. If plastic stand-offs are used to
mount the board, then you must ground the DeviceMaster using the power cable.
Note: The maximum diameter of the metal stand-offs should be 0.175” with a 4-40
machine screw. Metal stand-offs are not provided with the DeviceMaster.
4.Optionally, attach the light pipes. The following light pipes have been tested and found
DeviceMaster Installation and Configuration Guide: 2000506 Rev. B Hardware Installation - 17
to function; Bivar, Inc. (P/N:LP-230) and Ledtronics, Inc.
(P/N:LTP003-0CW-001).
Attaching the Network and Serial Cables
Ethernet
10/100
Connector
J3
12
910
Caution
Caution
Earth Gnd
Return
Positive
5-30VDC
+
-
Wire gauge:
AWG 12-22
Screw Terminal Power Connector
After mounting the DeviceMaster, you are ready to connect the cables.
Attaching the Network
and Serial Cables
Use the following procedure to attach the serial ribbon and Ethernet cables. For a larger
illustration of the system, see 1-Port Embedded
1.Attach the ribbon cable built in Building the Serial Ribbon Cable
on Page 92.
on Page 16 to the
header labeled J3.
2.Connect a standard Ethernet cable from the RJ45 port on the DeviceMaster to your
Ethernet hub.
The default serial port setting on the DeviceMaster is RS-232. Do not connect the
serial device until you have configured the serial port settings. You must
configure network settings and upload firmware before configuring the serial
port settings.
Use the next subsection to wire the power terminal connector and verify the hardware
installation.
Connecting the Power
and Verifying
Installation
Use the following procedure to wire the power terminal connector and connect the
DeviceMaster to a power source.
Observe proper ESD techniques when connecting and disconnecting the
DeviceMaster.
1.Insert the earth ground wire into the earth ground screw terminal.
2.Insert the DC positive wire into the positive
screw terminal and the DC return wire into the
return screw terminal.
If you purchased the Comtrol power supply
(separately), the wires are identified below:
•Red = 5-30VDC positive
•White = 5-30VDC return
•Black = earth ground
If you did not purchase a power supply from
Comtrol for the DeviceMaster, see 1-Port
30VDC Power Supply on Page 87 for power
requirements.
3.Use a small flat head screw to lock the wires
5-
into place.
4.Verify that each wire has been tightened securely.
18 - Hardware InstallationDeviceMaster Installation and Configuration Guide: 2000506 Rev. B
Connecting the Power and Verifying Installation
LEDs
JP1
5.Plug the screw terminal power connector into the DeviceMaster.
6.Connect the power supply to a power source.
7.Plug the screw
term in al p owe r
connector into JP1 on
the DeviceMaster by
aligning the scalloped
sides.
Note: Align the plug
properly. The
scalloped side
of the screw
terminal power
connector
should be
aligned with
the scalloped
side of the
power jack on
the unit.
8.Apply power to the DeviceMaster.
9.Verify the Status LED has completed the boot cycle and network connection for the
DeviceMaster is functioning properly using the table below.
The LEDs are located between the RJ45 connector and the power terminal block.
When lit, the amber Status LED (D1) on the DeviceMaster
indicates the devices is fully powered and has completed
the boot cycle.
Status
Note: The Status LED flashes for approximately 15 seconds
while booting. When the Bootloader completes the
cycle, the LED has a solid, steady light that blinks
approximately every 10 seconds.
Link/
Act
Duplex
When lit, the red Link/Act LED (D2) indicates a working
Ethernet connection.
When lit, the red Duplex (D3) LED indicates full-duplex
activity.
When lit, the red 100 (D4) LED indicates a working 100 MB
100
Ethernet connection (100 MB network, only). If the LED is
not lit, it indicates a 10 MB Ethernet connection.
Note: For additional LED information, go to the Status LED table on
Page 97.
10. Go to Initial Configuration
configure the DeviceMaster for use.
LED Descriptions
on Page 33 for default network settings and how to
DeviceMaster Installation and Configuration Guide: 2000506 Rev. B Hardware Installation - 19
2-Port (Serial Terminal) 1E/2E Models
Caution
Signal
Ground†
Chassis
Ground†
Positive†
Return†
5-30VDC
† Wire gauge: AWG 12-22
Signal Ground is used to connect RS-232 devices
later in the installation.
2-Port (Serial Terminal) 1E/2E Models
Use the following procedure to install DeviceMaster 2-port models with serial terminal
connectors. See 2-Port (DB9) 1E/2E Models
connectors.
1.Record the MAC address and serial number of the DeviceMaster unit on the customer
service label provided.
You may need the MAC address during driver configuration. The MAC address (starts
with 00 C0 4E) and serial number are located on a label on the DeviceMaster.
2.Attach the DeviceMaster 2-Port to the DIN rail adapter.
3.Connect the power supply and apply power to the DeviceMaster using the power
supply specifications on the product label and the following information.
Observe proper ESD techniques when connecting and disconnecting the
DeviceMaster.
a.Insert the earth ground
b.Insert the DC positive
c.Use a small flat head screw driver to lock the wires into place.
d.Verify that each wire has been tightened securely.
e.Connect the power supply to a power source.
Note: Do not connect multiple units until you have changed the default IP address, see
4.Use the appropriate method for network attachment of your DeviceMaster 2-port:
DeviceMaster 1E: Connect the 10/100 port to the same Ethernet network segment as
the host PC using a standard network cable.
DeviceMaster 2E: Connect the DeviceMaster 2E using one of these methods:
•Ethernet hub, switch (10/100Base-T), Server NIC (10/100Base-T): Connect
•Daisy-chaining DeviceMaster units: Connect the port labeled E1 (or E2) on the
20 - Hardware InstallationDeviceMaster Installation and Configuration Guide: 2000506 Rev. B
on Page 22 if the DeviceMaster has DB9 serial
wire into the chassis
ground screw terminal.
The chassis ground
connection is made only
if the DIN rail is NOT
connected to signal
ground.
wire into the + screw
terminal and the DC
return wire into the screw terminal.
If you purchased the
Comtrol power supply
(separately), the wires
are identified below:
•Red = 5-30VDC
positive
•White = 5-30VDC return
•Black = chassis ground
If you did not purchase a power supply from Comtrol for the DeviceMaster, see 2-
Port (Serial Terminals) Power Supply on Page 88 for power requirements.
Initial Configuration
on Page 33.
a 10/100 port to the same Ethernet network segment as the host PC using a
standard Ethernet cable.
first DeviceMaster to the port labeled E1 (or E2) on the second DeviceMaster or
other device using a standard Ethernet cable.
2-Port (Serial Terminal) 1E/2E Models
Caution
Do not connect RS-422/485 devices until the appropriate port interface type has
been configured. The default port setting is RS-232.
5.Verify that the Status LED has completed the boot cycle and network connection for
the DeviceMaster is functioning properly using the following table.
2-Port LED Descriptions
The STATUS LED on the device is lit, indicating you have power and it
ha s comp leted th e boo t cyc le.
STATUS
Note: The STATUS LED flashes while booting and it takes approximately
15 seconds for the Bootloader to complete the cycle. When the
Bootloader completes the cycle, the LED has a solid, steady light
that blinks approximately every 10 seconds.
LINKIf the LINK (green) LED is lit, it indicates a working Ethernet connection.
ACTIf the ACT (yellow) LED flashes, it indicates network activity.Note: For additional LED information, go to the STATUS LED table on Page 97.
6.Go to Initial Configuration
configure the DeviceMaster for use.
on Page 33 for default network settings and how to
DeviceMaster Installation and Configuration Guide: 2000506 Rev. B Hardware Installation - 21
2-Port (DB9) 1E/2E Models
Caution
PW1PW2
Return†
Positive†Positive†
Chassis
Ground†
† Wire gauge: AWG 12-22
6-30VDC
2-Port (DB9) 1E/2E Models
Use the following procedure to install DeviceMaster 2-port models with DB9 connectors.
1.Record the MAC address and serial number of the DeviceMaster unit on the customer
2.Attach the DeviceMaster 2-Port to the DIN rail adapter.
3.Connect the power supply and apply power to the DeviceMaster using the power
Observe proper ESD techniques when connecting and disconnecting the DeviceMaster.
service label provided.
You may need the MAC address during driver configuration. The MAC address (starts
with 00 C0 4E) and serial number are located on a label on the DeviceMaster.
supply specifications on the product label and the following information.
a.Insert the earth ground wire into the chassis ground screw terminal.
Note: The chassis ground connection is made only if the DIN rail is NOT
connected to earth ground.
b.Insert the DC positive wire into one of the + screw terminals and the DC return
wire into the - screw terminal.
A second redundant power supply can be connected to the unit by inserting the
DC positive wire into the other + screw terminal and the DC return wire into the
- screw terminal.
The DeviceMaster will
continue to operate if one of
the two connected power
supplies should fail.
I f y ou p ur ch a se d t h e C om tr ol
power supply (separately),
the wires are identified
below:
•Red = 6-30VDC positive
•White = 6-30VDC return
•Black = chassis ground
If you did not purchase a
power supply from Comtrol
for the DeviceMaster, see 2-
Port (DB9) Power Supply on
Page 88 for power
requirements.
c.Use a small flat head screw driver to lock the wires into place.
d.Verify that each wire has been tightened securely.
e.Connect the power supply to a power source.
Note: Do not connect multiple units until you have changed the default IP address, see
Initial Configuration
on Page 33.
22 - Hardware InstallationDeviceMaster Installation and Configuration Guide: 2000506 Rev. B
2-Port (DB9) 1E/2E Models
Caution
4.Use the appropriate method for network attachment of your DeviceMaster 2-port:
DeviceMaster 1E: Connect the 10/100 port to the same Ethernet network segment as
the host PC using a standard network cable.
DeviceMaster 2E: Connect the DeviceMaster 2E using one of these methods:
•Ethernet hub, switch (10/100Base-T), Server NIC (10/100Base-T): Connect
a 10/100 port to the same Ethernet network segment as the host PC using a
standard Ethernet cable.
•Daisy-chaining DeviceMaster units: Connect the port labeled E1 (or E2) on the
first DeviceMaster to the port labeled E1 (or E2) on the second DeviceMaster or
other device using a standard Ethernet cable.
Do not connect RS-422/485 devices until the appropriate port interface type has
been configured. The default port setting is RS-232.
5.Verify that the Status LED has completed the boot cycle and network connection for
the DeviceMaster is functioning properly using the following table.
2-Port LED Descriptions
The STATUS LED on the device is lit, indicating you have power and it
ha s comp leted th e boo t cyc le.
STATUS
Note: The STATUS LED flashes while booting and it takes
approximately 15 seconds for the Bootloader to complete the
cycle. When the Bootloader completes the cycle, the LED has a
solid, steady light that blinks approximately every 10 seconds.
LINK
If the LINK (green) LED is lit, it indicates a working Ethernet
connection.
ACTIf the ACT (yellow) LED flashes, it indicates network activity.
Note: For additional LED information, go to the Status LED table on Page 97.
6.Go to Initial Configuration
on Page 33 for default network settings and how to
configure the DeviceMaster for use.
DeviceMaster Installation and Configuration Guide: 2000506 Rev. B Hardware Installation - 23
4-Port and 8-Port Models
Larger Picture, Page 93
Larger Picture, Page 93
DeviceMaster RTS
Larger Picture, Page 93
DeviceMaster PRO and
DeviceMaster Serial Hub
Caution
Caution
4-Port and 8-Port Models
Use the following procedure to install the DeviceMaster 4-port or 8-port.
1.Record the MAC address and serial number of the DeviceMaster unit on the customer
2.Optionally, attach the mounting brackets using the screws provided in the kit (6-32 1/
service label provided.
You may need the MAC address during driver configuration. The MAC address (starts
with 00 C0 4E) and serial number are located on a label on the DeviceMaster.
Note: Do not connect multiple units until you have changed the default IP address, see
Initial Configuration
on Page 33.
4” flathead machine) or place the DeviceMaster on a stable surface.
Failure to use the correct screws can damage the PCB and void the warranty. Do
NOT use screws that exceed the length of the screws provided with the mounting
bracket kit.
Note: If you ordered the DeviceMaster Rackmount Shelf Kit accessory, use the
document that accompanied that kit or download the document
to mount the
DeviceMaster on the shelf.
3.Connect the DeviceMaster 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
DeviceMaster using a standard Ethernet cable.
•Server NIC (10/100Base-T): Connect to the port labeled DOWN on the
DeviceMaster using a standard Ethernet cable.
•Daisy-chaining DeviceMaster units: Connect the port labeled DOWN on the
first DeviceMaster to the port labeled UP on the second DeviceMaster or other
device using a standard Ethernet cable. Refer to Daisy-Chaining DeviceMaster
2E/4/8/16-Port Units on Page 101 for more detailed information.
Do not connect RS-422/485 devices until the appropriate port interface type has
been configured. The default port setting is RS-232.
4.Apply power to the DeviceMaster by connecting the AC power adapter to the
DeviceMaster, 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 4-Port
Power Supply on Page 88.
24 - Hardware InstallationDeviceMaster Installation and Configuration Guide: 2000506 Rev. B
4-Port and 8-Port Models
LNK
ACT
COL
100
10/100 NETWORK
UPDOWN
5.Verify that the PWR LED has completed the boot cycle and network connection for
the DeviceMaster is functioning properly using the table below.
4-Port and 8-Port LED Descriptions
LED on the front panel of the DeviceMaster is lit, indicating you have power
and it has completed the boot cycle.
PWR
Note: The PWR LED flashes while booting and it takes approximately 15
seconds for the Bootloader to complete the cycle. When the
Bootloader completes the cycle, the LED has a solid, steady light that
blinks approximately every 10 seconds.
LNK
ACT
COL
The red LNK ACT LED is lit, indicating that
you have a working Ethernet connection.
If the red COL LED is lit, there is a network
collision.
If the red 100 LED is lit, it indicates a working
100
100 MB Ethernet connection (100 MB
network, only). If the LED is not lit, it indicates
a 10 MB Ethernet connection.
Note: For additional LED information, go to the PWR LED table on Page 97.
6.Go to Initial Configuration
on Page 33 for default network settings and how to
configure the DeviceMaster for use.
DeviceMaster Installation and Configuration Guide: 2000506 Rev. B Hardware Installation - 25
16-Port (DeviceMaster RTS - External Power Supply)
Larger picture, Page 94
Caution
Caution
16-Port (DeviceMaster RTS - External Power Supply)
Use the following procedure to install the DeviceMaster RTS 16-port with an external
power supply.
1.Record the MAC address and serial number of the DeviceMaster unit on the customer
service label provided.
You may need the MAC address during driver configuration. The serial number and
MAC address (starts with 00 C0 4E) are located on a label on the DeviceMaster.
Note: Do not connect multiple units until you have changed the default IP address, see
Initial Configuration
2.Place the DeviceMaster RTS on a stable surface, or optionally mount the DeviceMaster
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.
on Page 33.
c.Attach the L bracket into your rack.
Follow these guidelines when mounting the DeviceMaster RTS in a rack.
•If the DeviceMaster 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 DeviceMaster in an environment
that is compatible with the maximum rated ambient temperature. See http://
www.comtrol.com/products/specifications/99450-3 for temperature
specifications.
•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 DeviceMaster 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
DeviceMaster is reliably grounded when mounting within the rack.
3.Connect the DeviceMaster 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
DeviceMaster RTS using a standard Ethernet cable.
•Server NIC (10/100Base-T): Connect to the port labeled DOWN on the
DeviceMaster RTS using a standard Ethernet cable.
•Daisy-chaining DeviceMaster units: Connect the port labeled DOWN on the
first DeviceMaster RTS to the port labeled UP on the second DeviceMaster or
other device using a standard Ethernet cable.
Do not connect RS-422/485 devices until the appropriate port interface type has
been configured. The default port setting is RS-232.
4.Apply power to the DeviceMaster RTS by connecting the AC power adapter to the
DeviceMaster, the power cord to the power adapter, and plugging the power cord into
a power source. See External Power Supply Specifications
on Page 87 if you want to
provide your own power supply.
26 - Hardware InstallationDeviceMaster Installation and Configuration Guide: 2000506 Rev. B
16-Port (DeviceMaster RTS - External Power Supply)
LNK
ACT
COL
100
10/100 NETWORK
UPDOWN
5.Verify that the PWR LED has completed the boot cycle and network connection for
the DeviceMaster RTS is functioning properly using the table below.
DeviceMaster RTS 16-Port (External Power Supply) LED Descriptions
Red LED on the front panel of the DeviceMaster is lit, indicating you have
power and it has completed the boot cycle.
Red
LED
Note: The LED flashes while booting and it takes approximately 15 seconds for
the Bootloader to complete the cycle. When the Bootloader completes
the cycle, the LED has a solid, steady light that blinks approximately
every 10 seconds.
LNK
ACT
COL
The red LNK ACT LED is lit, indicating that you
have a working Ethernet connection.
If the red COL LED is lit, there is a network
collision.
If the red 100 LED is lit, it indicates a working 100
100
MB Ethernet connection (100 MB network, only).
If the LED is not lit, it indicates a 10 MB Ethernet
connection.
Note: For additional LED information, go to the PWR/Status LED table on Page 97.
6.Go to Initial Configuration
on Page 33 for default network settings and how to
configure the DeviceMaster for use.
DeviceMaster Installation and Configuration Guide: 2000506 Rev. B Hardware Installation - 27
16-Port (DeviceMaster PRO)
Caution
Caution
16-Port (DeviceMaster PRO)
Use the following procedure to install the DeviceMaster PRO 16-port with an external
power supply.
1.Record the MAC address and serial number of the DeviceMaster 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 C0 4E.
2.Place the DeviceMaster PRO on a stable surface, or optionally mount the DeviceMaster
PRO 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 DeviceMaster in a rack.
•If the DeviceMaster PRO is installed in a closed or multi-rack assembly, the
•Make sure that the mechanical loading is level to avoid a hazardous
•Slots and openings in the cabinet are provided for ventilation. To ensure
•AC power inputs are intended to be used with a three-wire grounding type
3.Connect the DeviceMaster PRO 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
•Server NIC (10/100Base-T): Connect to the port labeled DOWN on the
•Daisy-chaining DeviceMaster units: Connect the port labeled DOWN on the
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.Connect the power cord into a power source.
5.Apply power to the DeviceMaster PRO by turning on the power switch.
operating temperature of the rack environment may be greater than the
ambient temperature. Be sure to install the DeviceMaster in an environment
that is compatible with the maximum rated ambient temperature (http://
www.comtrol.com/products/specifications/99451-0).
condition; such as, loading heavy equipment in the rack unevenly. The rack
should safely support the combined weight of all equipment in the rack.
reliable operation of the DeviceMaster and to protect it from overheating,
maintain a minimum of 1 inch of clearance on all sides of the unit.
plug, which has a grounding pin. Equipment grounding ensures safe
operation. Do not defeat the grounding means and verify that the
DeviceMaster is reliably grounded when mounting within the rack.
DeviceMaster PRO using a standard Ethernet cable.
DeviceMaster PRO using a standard Ethernet cable.
first DeviceMaster PRO to the port labeled UP on the second DeviceMaster PRO or
other device using a standard Ethernet cable.
Note: Do not connect multiple units until you have changed the default IP
address, see Initial Configuration
on Page 33.
28 - Hardware InstallationDeviceMaster Installation and Configuration Guide: 2000506 Rev. B
16-Port (DeviceMaster PRO)
LNK/
ACT
COL
100
10/100 NETWORK
UPDOWN
6.Verify that the PWR LED has completed the boot cycle and network connection for
the DeviceMaster is functioning properly using the table below.
DeviceMaster PRO 16-Port LED Description
Red LED on the front panel of the DeviceMaster PRO is lit, indicating you
Red
LED
(Front
panel)
have power and it has completed the boot cycle.
Note: The LED flashes while booting and it takes approximately 15
seconds for the Bootloader to complete the cycle. When the
Bootloader completes the cycle, the LED has a solid, steady light
that blinks approximately every 10 seconds.
LNK/
ACT
COL
The red LNK/ACT LED is lit, indicating
that you have a working Ethernet
connection.
If the red COL LED is lit, there is a
network collision.
If the red 100 LED is lit, it indicates a
100
working 100 MB Ethernet connection (100
MB network, only). If the LED is not lit, it
indicates a 10 MB Ethernet connection.
Note: For additional LED information, go to the PWR/Status LED table on Page 97.
7.Go to Initial Configuration
on Page 33 for default network settings and how to
configure the DeviceMaster for use.
DeviceMaster Installation and Configuration Guide: 2000506 Rev. B Hardware Installation - 29
16/32-Port Rack Mount Models (Internal Power Supply)
Caution
16/32-Port Rack Mount Models (Internal Power Supply)
Use the following procedure to install the DeviceMaster 16-port or 32-port with an
internal power supply.
1.Record the MAC address and serial number of the DeviceMaster unit on the customer
service label provided.
You may need the MAC address during driver configuration. The serial number and
MAC address (starts with 00 C0 4E) are located on a label on the DeviceMaster.
Note: Do not connect multiple units until you have changed the default IP address, see
Initial Configuration
2.Place the DeviceMaster on a stable surface, or optionally mount the DeviceMaster in a
rack.
Rack Installation:
a.Attach the L brackets to the interface using the screws supplied with the unit.
on Page 33.
b.You can mount the unit facing in either direction.
c.Attach the L bracket into your rack.
Follow these guidelines when mounting the DeviceMaster in a rack.
•If the DeviceMaster 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 DeviceMaster in an environment
that is compatible with the maximum rated ambient temperature. Refer to
the appropriate link for temperature specifications.
DeviceMaster Serial Hub: http://www.comtrol.com/products/specifications/
99460-2
•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 DeviceMaster 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
DeviceMaster is reliably grounded when mounting within the rack.
30 - Hardware InstallationDeviceMaster Installation and Configuration Guide: 2000506 Rev. B
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