Black Box LES431A User Manual
Modbus Hardened Serial Server
Connect Modbus networks (RS-232, RS-422,
or RS-485) to Ethernet networks, allowing
the Modbus network to become a node
on the network.
Access the Modbus network over a LAN/WAN using direct IP mode
connections.
LES431A
Customer
Support
Information
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: w ww.blackbox.com • E-mail: info@blackbox.com
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Trademarks Used in this Manual
Trademarks Used in this Manual
Black Box and the Double Diamond logo are registered trademarks of BB Technologies, Inc.
Firefox is a registered trademark of Mozilla Foundation.
Internet Explorer, Windows, and Windows Vista are registered trademarks of Microsoft Corporation.
UL is a registered trademark of Underwriters Laboratories.
Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.
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We‘re here to help! If you have any questions about your application
or our products, contact Black Box Tech Support at 724-746 -5500
or go to blackbox.com and click on “Talk to Black Box.”
You’ll be live with one of our technical experts in less than 30 seconds.
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FCC and IC RFI Statements
Federal Communications Commission and Industry Canada Radio Frequency Interference
Statements
This equipment generates, uses, and can radiate radio-frequency energy, and if not installed and used properly, that is, in strict
accordance with the manufacturer’s instructions, may cause inter ference to radio communication. It has been tested and found
to comply with the limits for a Class A computing device in accordance with the specifications in Subpart B of Part 15 of FCC
rules, which are designed to provide reasonable protection against such interference when the equipment is operated in a
commercial environment. Operation of this equipment in a residential area is likely to cause interference, in which case the user
at his own expense will be required to take whatever measures may be necessary to correct the interference.
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to
operate the equipment.
This digital apparatus does not exceed the Class A limits for radio noise emis sion from digital apparatus set out in the Radio
Interference Regulation of Industry Canada.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques
de la classe A prescrites dans le Règlement sur le brouillage radioélectrique publié par Industrie Canada.
WARNING: EXPLOSION HAZARD—DO NOT DISCONNECT EQUIPMENT WHILE THE CIRCUIT IS LIVE OR UNLESS THE AREA IS
KNOWN TO BE FREE OF IGNITABLE CONCENTRATIONS.
SUITABLE FOR USE IN CLASS I, DIVISION 2, GROUPS A, B, C AND D HAZARDOUS LOCATIONS, OR NONHAZARDOUS
LOCATIONS ONLY.
WARNING: EXPLOSION HAZARD—SUBSTITUTION OF ANY COMPONENT MAY IMPAIR SUITABILITY FOR CLASS I, DIVISION 2.
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NOM Statement
Instrucciones de Seguridad
(Normas Oficiales Mexicanas Electrical Safety Statement)
1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado.
2. Las instrucciones de seguridad y operación deberán ser guardadas para referencia futura.
3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de operación deben ser respetadas.
4. Todas las instrucciones de operación y uso deben ser seguidas.
5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo, cerca de la tina de baño, lavabo, sótano mojado o cerca
de una alberca, etc.
6. El aparato eléctrico debe ser usado únicamente con carritos o pedestales que sean recomendados por el fabricante.
7. El aparato eléctrico debe ser montado a la pared o al techo sólo como sea recomendado por el fabricante.
8. Servicio—El usuario no debe intentar dar servicio al equipo eléctrico más allá a lo descrito en las instrucciones de operación.
Todo otro servicio deberá ser referido a personal de servicio calificado.
9. El aparato eléctrico debe ser situado de tal manera que su posición no interfiera su uso. La colocación del aparato eléctrico
sobre una cama, sofá, alfombra o superficie similar puede bloquea la ventilación, no se debe colocar en libreros o gabinetes
que impidan el flujo de aire por los orificios de ventilación.
10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor como radiadores, registros de calor, estufas u otros
aparatos (incluyendo amplificadores) que producen calor.
11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del tipo descrito en el instructivo de operación, o como
se indique en el aparato.
12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada.
13. Los cables de la fuente de poder deben ser guiados de tal manera que no sean pisados ni pellizcados por objetos colocados
sobre o contra ellos, poniendo particular atención a los contactos y receptáculos donde salen del aparato.
14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las recomendaciones del fabricante.
15. En caso de existir, una antena externa deberá ser localizada lejos de las lineas de energia.
16. El cable de corriente deberá ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo.
17. Cuidado debe ser tomado de tal manera que objectos liquidos no sean derramados sobre la cubierta u orificios de ventilación.
18. Servicio por personal calificado deberá ser provisto cuando:
A: El cable de poder o el contacto ha sido dañado; u
B: Objectos han caído o líquido ha sido derramado dentro del aparato; o
C: El aparato ha sido expuesto a la lluvia; o
D: El aparato parece no operar normalmente o muestra un cambio en su desempeño; o
E: El aparato ha sido tirado o su cubierta ha sido dañada.
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Table of Contents
Table of Contents
1. Specifications ......................................................................................................................................................................... 6
2. Overview ............................................................................................................................................................................... 9
2.1 Introduction ...................................................................................................................................................................9
2.2 Features ......................................................................................................................................................................... 9
2.3 What’s Included ............................................................................................................................................................9
2.4 Hardware Description .................................................................................................................................................. 10
2.5 Modbus Hardened Serial Server Configuration Software ............................................................................................ 11
3. Installation and Initial Setup ................................................................................................................................................. 12
3.1 Connecting the Power Supply ..................................................................................................................................... 12
3.2 Connecting Modbus Hardened Serial Servers to Modbus Networks ........................................................................... 12
3.2.1 RS -2 32 ................................................................................................................................................................ 12
3.2.2 RS-422 ............................................................................................................................................................... 12
3.2.3 RS- 485 ............................................................................................................................................................... 12
3.3 Connecting Modbus Hardened Serial Servers to a Network .......................................................................................13
3.4 Modbus Hardened Serial Server Configuration Connections ....................................................................................... 13
3.4.1 Installing Modbus Hardened Serial Server Software ........................................................................................... 14
3.4.2 Configuring the Modbus Hardened Serial Server via the Network Connection ................................................. 17
3.4.3 Configuring the Modbus Hardened Serial Server on Networks Without a DHCP Server ...................................33
3.4.4 Configuring the Modbus Hardened Serial Server via the Serial Port ................................................................... 35
3.5 LES431A Modbus Hardened Serial Server Operational Connections ...........................................................................37
3.6 Initiating a Hardware Reset on the Modbus Hardened Serial Server ...........................................................................37
3.7 Reloading Factory Defaults ..........................................................................................................................................37
4. Upgrading the Modbus Hardened Serial Server Firmware ...................................................................................................38
4.1 Downloading Firmware Files ........................................................................................................................................ 38
4.2 Uploading the Firmware to the Modbus Hardened Serial Server ..........................................................................................39
5. Diagnostics ..........................................................................................................................................................................40
6. Application Examples ..........................................................................................................................................................42
6.1 Ethernet Master and Serial Slaves ................................................................................................................................42
6.2 Serial and Ethernet Masters, Serial and Ethernet Slaves ...............................................................................................47
6.3 Serial Masters, IP Slaves ...............................................................................................................................................49
6.4 Identical Hard-Coded Slaves ........................................................................................................................................ 51
6.5 Identical Production Lines ............................................................................................................................................ 51
7. Modbus Help.......................................................................................................................................................................52
7.1 Modbus ASCII/RTU Basics ...........................................................................................................................................52
7.2 Hints and Tips ..............................................................................................................................................................52
Appendix A. Default Modbus Hardened Serial Server Settings ................................................................................................. 53
Appendix B. Connector Pinouts ................................................................................................................................................54
B.1 DB9 M Connector .......................................................................................................................................................54
B.2 Terminal Block .............................................................................................................................................................54
B.3 Standard Ethernet Cable RJ-45 Pinout .......................................................................................................................55
Appendix C. Glossary ................................................................................................................................................................56
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Chapter 1: Specifications
1. Specifications
General Specifications
Approvals
Compatible
Operating Systems
Configuration
Options
Enclosure Rating: IP30;
User Controls (1) Reset button
Connectors (1) DB9 M, (1) 5-pin terminal block, (1) RJ-45, (1) 2-position pluggable terminal block for power
Indicators (3) LEDs: (1) Ready, (1) Serial, (1) Ethernet Link
Temperature
Tolerance
Operating
Humidity
Power Voltage requirements: 10 to 48 VDC (58 VDC max.) extermal power supply;
FCC Part 15, Class A, CE, NEMA TS2, UL® Class 1, Division 2, Groups A, B, C, and D
Windows® XP (32/64 bit), 2003 Server (32/64 bit), Windows Vista® (32/64 bit),
2008 Server (32/64 bit), Windows 7 (32/64 bit)
Via serial port using Modbus Hardened Serial Server Software, via network using Modbus Hardened Serial
Server Software with an Ethernet connection or a standard Web browser such as Internet Explorer® 7, 8, or 9,
or Firefox
Mounting: DIN rail mount (35 mm)
Operating: -40 to +176° F (-40 to +80° C);
Storage: -40 to +185° F (-40 to +85° C);
Maximum Ambient Surrounding Air Temperature: 176° F (80° C)
10 to 95%, noncondensing
Consumption: 4.0 watts maximum;
Terminal blocks: Wire size: 28 to 16 AWG,
Wire Type: Copper wire only,
Tightening Torque: 5 kg-cm,
Wire Temperature Rating: 105° C minimum, sized for 60° C ampacity
®
3 or 4
NOTE: One conductor per terminal.
Dimensions 1.2"H x 3.3"W x 4.7"D (4.6 x 12.2 x 17.1 cm)
Serial Interface Specifications
Baud Rates 75, 150, 300, 600, 1200, 2400, 4800, 7200, 9600, 14400, 19200, 28800, 38400, 57600, 115200, 230400
Data Bits 5, 6, 7, 8
Flow Control None, RTS/CTS, X-ON/X-OFF
Mode Selection RS-232/422/485 software-selectable
Parity None, even, odd, mark, space
RS-232 Lines TXD, RXD, RTS, CTS, DTR, DSR, DCD, GND
RS-422 Lines TXDA(-), TXDB(+), RXDA(-), RXDB (+), GND
RS-485 (2-Wire) Data(-), Data(+), GND
RS-485 (4-Wire) TXDA(-), TXDB(+), RXDA(-), RXDB (+), GND
RS-422/485 Biasing Auto 4.7 K-ohm pullups and pulldowns
RS-422/485
Termination
RS-485 Data
Control
Stop Bits 1, 1.5, 2
Auto termination with through hole (user supplied)
Auto control via MCU
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Network Specifications
Character Count 0 to 65535
Connection Modes Server, Client
Memory Serial: 8 KB per port;
Network memory: 4 KB
Firmware Upgrade Via serial, Ethernet, or auto Web search
IP Port Addresses 5300: heartbeat and configuration setting in TCP mode;
8888: LES431A update
Network
Communications
Network Physical
Layer Standards
Protocols
Supported
Search Serial direct COM and Ethernet autosearch or specific IP
Timeouts Character: 0 to 65535 ms. default set at 10 ms;
LAN: 10- /100-Mbps auto-detecting 10BASE-T and 100BASE-TX
Ethernet: IEEE 802.3 autodetecting and auto MDI/MDI-X 10BASE-T and 100BASE-TX
TCP, IPv4, UDP, ARP, HTTP 1.0, ICMP/PING, DHCP/BOOTP;
IP mode: Static, DHCP, or Auto IP;
TCP: User-definable
Modbus Message: 0 to 65535 ms, default set at 1000 ms;
Serial: 0 to 65535 sec.
Chapter 1: Specifications
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Chapter 1: Specifications
Dimensional Diagrams
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Figure 1-1. Dimensional diagram of a LES431A Modbus Hardened Serial Server.
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Chapter 2: Overview
2. Overview
2.1 Introduction
The 1-Port Modbus Hardened Serial Server connects Modbus networks (RS-232, RS-422, or RS-485) to Ethernet networks,
allowing the Modbus network to become a node on the network. The serial port can be accessed over a LAN/WAN using Direct
IP Mode connections. Modbus Hardened Serial Servers use 10BASE-T or 100BASE-TX copper network media. The servers are built
for use in industrial environments and feature an IP30 approved slim-line DIN-rail-mountable case. The product operates from a
range of DC power supply voltages and features pluggable terminal block power connectors. The Modbus Hardened Serial Server
has one Ethernet port.
Table 2-1. LES431A details.
Part Number Serial Ports Serial Connec tors Ethernet Media Ethernet Connector Power
(1) DB9M and (1) 5-pin terminal block
LES431A 1
2.2 Features
• Single Ethernet connector.
NOTE: Use either the DB9 or the terminal
block connector, but not both at
the same time.
RJ- 45 RJ-45 (1) 3-wire terminal block
• Multi-interface serial port (RS-232, RS-422, RS-485).
• DB9M and pluggable terminal block serial port connector options.
• All serial ports are software selectable for RS-232, RS-422, or RS-485 2- and 4-wire communication.
• Configuration can be done via network or direct serial connection.
• Slim-line DIN rail or panel mountable.
• Accepts DC power over a wide voltage range.
• Supports 10-/100-Mbps Ethernet with auto-selection and auto MDI/MDI-X.
• LAN and WAN communications.
• Configurable for TCP Client or Server operation.
• Upload firmware over the Ethernet port for future revisions/upgrades.
• Supports Windows® XP (32/64 bit), 2003 Server (32/64 bit), Vista (32/64 bit), 2008 Server (32/64 bit),
Windows 7 (32/64 bit).
• Configure Ethernet and serial port settings using Modbus Hardened Serial Server Software.
2.3 What‘s Included
Your package should include the following items. If anything is missing or damaged, contact Black Box Technical Support
at 724-746-5500 or info@blackbox.com.
• 1-Port Modbus Hardened Serial Server module (LES431A).
• A printed quick start guide.
To download this user manual, go to ftp://ftp.blackbox.com/anonymous/manuals/L/LES431A_USER_rev1.pdf or visit the Black Box
Web site (www.blackbox.com) and enter LES431A in the search bar.
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Chapter 2: Overview
2.4 Hardware Description
1-Port Modbus Hardened Serial Server (LES431A)
Figures 2-1 and 2-2 show the front, back, and top panels of the LES431A. Table 2-2 describes its components.
4
5
1
2
3
7
6
Figure 2-1. LES431A front and back panels.
4 8
Figure 2-2. LES431A top panel.
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Table 2-2. LES431A components.
Number in Figure
2-1 or 2-2 Component Description
Chapter 2: Overview
1 (1) R J-45 connec tor
2 (1) 5-position terminal block connector
3 (1) DB9 male connector
4 (1) 2-wire terminal block connector
5 (1) Serial Por t LED
6 (1) Ethernet Link LED
7 (1) Ready LED
8 (1) Reset mode switch
Connects a standard Ethernet network drop using a straight-through RJ-45 male Ethernet cable.
Connects to an RS-422 or RS-4 85 serial device when the DB9 M (RS -232) connector is disabled.
Connects to an RS-232 serial device when the 5-position terminal block (RS-422/RS-485) is disabled.
Removable 2-position terminal block with +, -, and chassis ground connections.
Flashes green when data is being transmitted or received on the serial port.
Lights steady green when the serial port is open.
Lights when a connection to the network is made.
Blinking when there is data traffic on the Ethernet link.
Blinks once per second when the system is operating correctly.
Blinks three times per second in reset, configuration mode, or when loading factory defaults.
Off or steady On when the system is not operating correctly.
Used to initiate a hardware reset, enter console mode, or reload factor y defaults.
2.5 Modbus Hardened Serial Server Configuration Software
Modbus Hardened Serial Server configuration software enables you to find connected Modbus Hardened Serial Servers, configure
them, upgrade Modbus Hardened Serial Server firmware, and save/load configuration files. Its graphical user interface (GUI) is
convenient and easy to use.
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Chapter 3: Installation and Initial Setup
3. Installation and Initial Setup
NOTE: In this section, devices to be connected to the Modbus Hardened Serial Server’s serial connections are simply referred to as
the “Modbus network.”
3.1 Connecting the Power Supply
Connect a DC power supply to the power terminals on the side of the Modbus Hardened Serial Server. Polarity of the wires is
indicated on the label on the side of the Modbus Hardened Serial Server. Acceptable voltages are between 10 VDC and 58 VDC.
The power supply must be capable of supplying 4 watts to the LES431A.
2-wire terminal
block connector
Figure 3-1. LES431A power supply connections.
3.2 Connecting Modbus Hardened Serial Servers to Modbus Networks
The Modbus Hardened Serial Servers can be connected to Modbus networks using RS-232, RS-422, RS-485 2-wire, or RS-485
4-wire. The LES431A uses either (1) DB9 M connector or (1) 5-position terminal strip.
3.2.1 RS-232
RS-232 connections support eight signal lines plus Signal Ground. Signals are single-ended and referenced to Ground. Default
communication parameters are 9600, 8, N, 1, and no flow control implemented.
3.2.2 RS-422
RS-422 connections support two signal pairs: TDA (-), TDB (+), RDA (-), RDB (+), and GND. The data lines are differential pairs
(A and B) in which the B line is positive relative to the A line in the idle (mark) state. In RS-422, the transmitter is always enabled.
Signal Ground provides a common mode reference.
3.2.3 RS-485
RS-485 connections support 2-wire or 4-wire operation.
When configured for 4-wire operation, the connection supports two signal pairs: TDA (-), TDB (+), RDA (-), RDB (+), and GND.
This makes full-duplex operation possible. The data lines are differential pairs (A and B) in which the B line is positive relative to
the A line in the idle (mark) state. Signal Ground provides a common mode reference.
When configured for 2-wire operation, the connection supports one signal pair: Data A (-) and Data B (+). These lines transmit
and receive signals using half-duplex operation. The data lines are differential with the Data B line positive relative to Data A in the
idle (mark) state. Signal Ground provides a common mode reference.
Connecting the Modbus Hardened Serial Server
The LES431A has one serial connection that supports RS-232, RS-422, and RS-485 (2- and 4-wire). The unit has two connectors:
a DB9 male connector and a 5-position terminal block.
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Chapter 3: Installation and Initial Setup
Diagram Format
Rule Size: 0.013
If you select RS-232 mode when you configure the Modbus Hardened Serial Server, you must connect the Modbus serial network
to the Modbus Hardened Serial Server via a serial cable. The LES431A is a DTE. If the Modbus network is a DTE, use a nullmodem (crossover) cable. If the Modbus network is a DCE, use a straight-through cable. DTE and DCE ports are complementary;
the output signals on a DTE port are inputs to a DCE port, and output signals on a DCE port are inputs to a DTE port. The signal
names match each other and connect pin-for-pin. Signal flow is in the direction of the arrows (see Table 3-1, below).
Table 3-1. DTE to DCE Connections.
DTE Device (Computer) DB9 DCE Device (Modem) DB9
Pin # RS-232 Signal Names Signal Direction Pin # RS-232 Signal Names
1 Carrier Detect (CDA) <---------------------------- 1 Carrier Detect (CD)
2 Receive Data (RX) <---------------------------- 2 Receive Data (RX)
3 Transmit Data (TX) ----------------------------> 3 Transmit Data (TX)
4 Data Terminal Ready (DTR) ----------------------------> 4 Data Terminal Ready (DTR)
5 Signal Ground (SG) ----------------------------- 5 Signal Ground (SG)
6 Data Set Ready (DSR) <---------------------------- 6 Data Set Ready (DSR)
7 Request to Send (RTS) ----------------------------> 7 Request to Send (RTS)
8 Clear to Send (CTS) <---------------------------- 8 Clear to Send (CTS)
9 Ring Indicator (RI) <---------------------------- 9 Ring Indicator (RI)
Soldered to DB9 metal—Shield (FGND) ----------------------------- Soldered to DB9 metal—Shield (FGND)
If you select RS-422 mode, RS-485 2-wire mode, or RS-485 4-wire mode when you configure the Modbus Hardened Serial
Server, you must connect the Modbus network appropriately, via the 5-position terminal block.
NOTE: Refer to Appendix B for connector pinout information.
Network
RS-232 serial cable
Modbus
PC
Hardened Serial
Server (LES431A)
Figure 3-2. LES431A connections.
RS-422/485 cable
Serial device
3.3 Connecting Modbus Hardened Serial Servers to a Network
When connecting a Modbus Hardened Serial Server equipped with a 10BASE-T/100BASE-TX network connection (RJ-45
connector) to an Ethernet network drop, use a standard unshielded twisted-pair cable. PCs configuring and/or communicating
with the Modbus Hardened Serial Server are also connected to the network.
3.4 Modbus Hardened Serial Server Configuration Connections
The Modbus Hardened Serial Servers can be configured using three methods:
• Via the network using Modbus Hardened Serial Server Software.
• Via the network using a Web browser.
• Via a serial port using Modbus Hardened Serial Server Software (Console Mode).
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Chapter 3: Installation and Initial Setup
3.4.1 Installing Modbus Hardened Serial Server Configuration Software
Step 1: Download the Modbus Configuration Manager Software from ftp://ftp.blackbox.com. Double-click on the executable file.
The file name is Modbus Hardened Serial Server Manager Vx.x.x.
a. The following screen will be displayed on your computer.
Figure 3-3. Modbus Hardened Serial Server Manager Installation Welcome screen.
b. Click “Next.” The License Agreement Screen will be displayed on your computer.
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Figure 3-4. Modbus License Acceptance Screen.
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Chapter 3: Installation and Initial Setup
c. Click “Next.” The User Information Screen will be displayed on your computer. Enter your name and organization (optional) and
select if the software will be accessible to your account or anyone who uses the computer.
Figure 3-5. User information screen.
d. Click “Next.” The Destination Folder Screen will be displayed on your computer. The default directory is:
C:\Program Files\Black Box\Modbus Hardened Serial Server\
If desired, you can select another location by pressing the “Browse” button.
Figure 3-6. Destination folder screen.
e. Click “Next.” The Ready to Install Application Screen will be displayed on your computer. You can select the “Back” button to
change the destination folder.
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Chapter 3: Installation and Initial Setup
Figure 3-7. Ready to Install Application screen.
f. Click “Next.” The software will begin installing.
Figure 3-8. Software Installing screen.
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Chapter 3: Installation and Initial Setup
g. After the installation is complete, an information screen will be displayed containing contact information and release notes.
Click “Next.”
Figure 3-9. Information screen.
h. The Installation Complete screen will be displayed on your computer. Click “Finish” to finish the installation.
Figure 3-10. Installation Complete screen.
3.4.2 Configuring the Modbus Hardened Serial Server via the Network Connection
To configure via the network, you can use either Modbus Configuration software or the Web interface.
Configuring with Modbus Configuration Manager
LES431A Modbus Hardened Serial Servers can be configured over the network Modbus Configuration manager software running
on a PC.
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Chapter 3: Installation and Initial Setup
To open Modbus Hardened Serial Server Configuration Manager:
1. From the Desktop, click Start—>Programs—>Modbus Hardened Serial Server Manager. An alternate method is to double-click
the shortcut installed on the desktop.
Figure 3-11. Opening Modbus Hardened Serial Server Configuration Manager.
Figure 3-12. Modbus Hardened Serial Server Configuration Manager Shortcut Icon.
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