B&B Electronics MES1B manual MES1A Connections

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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.

Power is supplied to the converter via the power supply terminal block.

Typically, the MES1A/B is connected to the network via a hub switch or router using standard straight-through CAT-5 cable. (If you are connecting the MES1A/B directly to a PC’s network interface a crossover Ethernet cable is required.)

Figure 8. MES1A 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.comB&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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Contents Modbus TCP Modbus Ascii / RTU Converters Models MES1A, MES1BManual Documentation Number MES1A/MES1B-2106m International Headquarters Page Manual Documentation Number MES1A/MES1B-2106m PN7138-rev001 Page Table of Contents Configuring the MES1A/B Modbus Basics Manual Documentation Number MES1A/MES1B-2106m Introduction About this ManualSupport About Your MES1A/B Converter Features Power LED Package ChecklistIndicators, Switches and Connectors Hardware OverviewReset Switch Link LEDActivity LED DB-9M Serial Port Connector MES1A only RS-422/485 Switch MES1B onlyEthernet Port Connector RS-422/485 Connector MES1B onlyRS-422/485 Four-Wire Mode RS-485 Two-Wire ModeConnecting the Hardware Power ConnectorMES1A Connections MES1B Connections Hardware Overview Getting Started QuickStartDiscover the MES1A/B on the Network Using the Device Installer Software Installing the Device InstallerSystem Requirements Starting the Device Installer Discovering DevicesDevice Installer Main Window Getting Device DetailsConnecting to the MES1A/B Press Enter to go into Setup ModeTelnet Configuration Tab with Settings Getting Started Configuring the MES1A/B Telnet Configuration TabNavigating the Configuration Menu Unit ID to IP Address TableTo Reconfigure the MES1A to Factory Settings Saving Configuration SettingsReconfiguring to Factory Settings To Reconfigure the MES1B, to Factory SettingsNetwork/IP Settings IP AddressDefault Gateway Auto-IPStatic IP Address Serial and Mode Settings Telnet Configuration PasswordNetmask Protocol Attached DeviceSerial Protocol Serial Interface MES1A Serial InterfaceMES1B Serial Interface Modem/Configurable Pin Settings Serial ParametersAdvanced Modbus Protocol Settings Advanced Modbus Protocol Settings MenuSlave Address / Unit ID Source For Auto…255 = No Allow Modbus BroadcastsUse MB/TCP 00BH/00AH Exception Responses = YesDisable Modbus/TCP Pipeline Character TimeoutMessage Timeout Swap 4x/0H to Get 3x/1x Unit ID to IP Address Lookup Table SettingsSerial TX Delay after RX Close Idle TCP Sockets AfterRedundant Entry Retries After Add, Delete, Exit Select FunctionModbus Address From/To Slave IP Address Using Other Device Installer Features Managing Device ListsCreating a New Device List Opening Device Lists Display Devices Using IconsSaving Device Lists Device List Display OptionsAdding a Device Manually Display the Hardware MAC AddressDisplay the Device Name Assigning an IP Address using Device Installer Using Device Installer to Assign an IP AddressUsing the Devices Details Tab Upgrading Firmware Adding Info to the Device Details TabInstalling Pre-Saved Configuration Files Saving Setup RecordsInstalling Setup Records Save Setup Records Dialog BoxLogging Search and Upgrade Data Options Window, Customization Tab Using Ping Using HelpUsing Other Device Installer Features Modbus Basics Modbus ASCII/RTUModbus/TCP Hints and Tips Modbus Basics Appendix a Default Configuration Settings Swap 4x/0H to get 3x/1xDefault Configuration Settings Appendix B Product Specifications Manual CD-ROM discProduct Specifications Appendix C Dimensional Diagrams Dimensional Diagram of the MES1ADimensional Diagram of the MES1B Appendix D Serial Connections DTEMES1B Terminal Block Pin-out for RS-485 Two-Wire Operation RJ-45 Pin Signal Wire Color Appendix E Network ConnectionsNetwork Connections Declaration of Conformity