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M Mo od de ells s:: M ME ES S1 1A A,, M ME ES S1 1B B
Modbus TCP
Modbus TCP
to
to
Modbus ASCII / RTU
Modbus ASCII / RTU
Converters
Converters
Manual Documentation Number: MES1A/MES1B-2106m PN7138-rev001
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.b
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Manual Documentation Number: MES1A/MES1B-2106m PN7138-rev001 B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com
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International Headquarters B&B Electronics Mfg. Co. Inc. 707 Dayton Road Ottawa, IL 61350 USA Phone (815) 433-5100 -- General Fax (815) 433-5105 Website: www.bb-elec.com Sales e-mail: orders@bb-elec.com -- Fax (815) 433-5109 Technical Support e-mail: support@bb.elec.com -- Fax (815) 433-5104 European Headquarters B&B Electronics Ltd. Westlink Commercial Park Oranmore, Co. Galway, Ireland Phone +353 91-792444 -- Fax +353 91-792445 Website: www.bb-europe.com
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© 2006 B&B Electronics. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photography, recording, or any information storage and retrieval system without written consent. Information in this manual is subject to change without notice, and does not represent a commitment on the part of B&B Electronics. B&B Electronics shall not be liable for incidental or consequential damages re
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Table of Contents Table of Contents CHAPTER 1: INTRODUCTION............................................................................. 1 ABOUT THIS MANUAL ............................................................................................... 1 SUPPORT.................................................................................................................... 1 ABOUT YOUR MES1A/B CONVERTER ...................................................................... 1 FEATURE
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CHAPTER 4: CONFIGURING THE MES1A/B.................................................. 19 NAVIGATING THE CONFIGURATION MENU .............................................................. 20 1) NETWORK/IP SETTINGS....................................................................................... 22 IP Address........................................................................................................... 22 Default Gateway .......................................................
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USING PING ............................................................................................................. 45 USING HELP............................................................................................................. 45 CHAPTER 6: MODBUS BASICS.......................................................................... 47 MODBUS ASCII/RTU.............................................................................................. 47 MODBUS/TCP...................
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Manual Documentation Number: MES1A/MES1B-2106m PN7138-rev001 B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com iv
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Introduction Chapter 1: Introduction Chapter 1: Introduction Thank you for purchasing an MES1A or MES1B Modbus TCP to Modbus ASCII/RTU Converter! Like all B&B Electronics products, this product has been manufactured to the highest standards of quality and performance to ensure your complete satisfaction. About this Manual This manual has been created to assist you in installing, configuring and using the MES1A/B. Please read it carefully and follow the instructions to achieve best
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Introduction MES1A Converters allow new and legacy Modbus ASCII/RTU slave devices with RS-232 serial ports to operate on a TCP/IP network as full Modbus TCP slaves. All Modbus TCP devices on the network can share access to the Modbus ASCII/RTU device. MES1B Converters allow Modbus/RTU slave devices with RS-422/485 interfaces to operate on a TCP/IP network as full Modbus TCP slaves. All Modbus devices on an RS-485 bus can be connected to the TCP/IP network via the MES1B, allowing them all
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Hardware Overview Chapter 2: Hardware Overview Chapter 2: Hardware Overview Package Checklist MES1A/B Modbus ASCII/RTU to Modbus TCP Converters are shipped with the following items included: the MES1A or MES1B module a printed version of this user manual a printed version of the MES1A/B Quick Start Guide a CD-ROM disc with o Device Installer software o this manual in pdf format o a Quick Start guide in pdf format Indicators, Switches and Connectors Power LED The Power LE
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Hardware Overview Link LED When the Link LED located on the Ethernet jack is illuminated it indicates that a connection (link integrity) has been established between the converter and the network. Its color is green if connected to a 100BaseT network; orange if connected to a 10BaseT network. It turns orange briefly during the power up process. Activity LED When the Activity LED located on the Ethernet jack is flashing (green) it indicates data is being sent across the network. This
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Hardware Overview RS-422/485 Switch (MES1B only) The RS-422/485 switch allows you to set the MES1B Converter for RS-422/485 four-wire or RS-485 two-wire operation. • When the switch is in the left position, the MES1B operates in RS-422/485 four-wire mode. • When the switch is in the right position, the MES1B operates in the RS-485 two-wire mode. Ethernet Port Connector The Ethernet Port connector is a standard RJ-45 receptacle that allows the converter to be connected to an Ethern
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Hardware Overview Figure 4. MES1B Serial Connector RS-422/485 Four-Wire Mode When the MES1B is configured to operate in RS-422/485 four-wire mode (RS-422/485 switch in the left position) its receive terminals are connected to the transmit terminals of the Modbus device it is communicating with. Its transmit terminals are connected to the receive terminals of the Modbus device it is communicating with. Figure 5. RS-422/485 Four-Wire Connection RS-485 Two-Wire Mode When the MES1B i
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Hardware Overview Figure 6. RS-485 Two-Wire Connection No jumpers are required to bridge the transmit and receive lines in two-wire mode. Power Connector The Power Connector is a removable two-position screw terminal block with screw down. The MES1A/B requires between 10 VDC and 30 VDC (3.6 Watts). Typically a 12 VDC power adapter is connected to the terminal block via bare wires. The terminal block can be unplugged to remove the converter from service. Figure 7. MES1A/B Power C
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Hardware Overview straight-through cable. If the connected Modbus device is configured as a DTE, use a null modem cable. Always check the interface specifications of the Modbus device to determine whether it is a DTE or DCE before connecting. The MES1B is connected to its Modbus device via the RS-422/485 terminal block. In RS-422/485 four-wire mode a cable containing two pairs and a ground/shield is used. In RS-485 two-wire mode a cable containing one pair and a ground/shield is used.
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Hardware Overview Figure 9. MES1B Connections Manual Documentation Number: MES1A/MES1B-2106m PN7138-rev001 B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb- europe.com 9
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Hardware Overview Manual Documentation Number: MES1A/MES1B-2106m PN7138-rev001 B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com 10
