B&B Electronics MES1A, MES1B manual Connecting the Hardware, Power Connector

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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 Connector

Connecting the Hardware

The MES1A is connected to its Modbus device via a DB-9M connector and an RS-232 cable. The MES1A is configured as a DTE. If the connected Modbus device is configured as a DCE, use a

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 Models MES1A, MES1B Modbus TCP Modbus Ascii / RTU ConvertersManual 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 Support About Your MES1A/B Converter IntroductionAbout this Manual Features Indicators, Switches and Connectors Package ChecklistPower LED Hardware OverviewActivity LED Reset SwitchLink LED Ethernet Port Connector RS-422/485 Switch MES1B onlyDB-9M Serial Port Connector MES1A only RS-422/485 Connector MES1B onlyRS-485 Two-Wire Mode RS-422/485 Four-Wire ModePower Connector Connecting the HardwareMES1A Connections MES1B Connections Hardware Overview QuickStart Getting StartedDiscover the MES1A/B on the Network System Requirements Using the Device Installer SoftwareInstalling the Device Installer Discovering Devices Starting the Device InstallerGetting Device Details Device Installer Main WindowPress Enter to go into Setup Mode Connecting to the MES1A/BTelnet Configuration Tab with Settings Getting Started Telnet Configuration Tab Configuring the MES1A/BUnit ID to IP Address Table Navigating the Configuration MenuReconfiguring to Factory Settings Saving Configuration SettingsTo Reconfigure the MES1A to Factory Settings To Reconfigure the MES1B, to Factory SettingsIP Address Network/IP SettingsStatic IP Address Default GatewayAuto-IP Netmask Serial and Mode SettingsTelnet Configuration Password Serial Protocol ProtocolAttached Device MES1B Serial Interface Serial InterfaceMES1A Serial Interface Serial Parameters Modem/Configurable Pin SettingsAdvanced Modbus Protocol Settings Menu Advanced Modbus Protocol Settings…255 Slave Address / Unit ID SourceFor Auto Use MB/TCP 00BH/00AH Exception Responses Allow Modbus Broadcasts= No = YesMessage Timeout Disable Modbus/TCP PipelineCharacter Timeout Serial TX Delay after RX Unit ID to IP Address Lookup Table SettingsSwap 4x/0H to Get 3x/1x Close Idle TCP Sockets AfterModbus Address From/To Redundant Entry Retries AfterAdd, Delete, Exit Select Function Slave IP Address Creating a New Device List Using Other Device Installer FeaturesManaging Device Lists Saving Device Lists Display Devices Using IconsOpening Device Lists Device List Display OptionsDisplay the Device Name Adding a Device ManuallyDisplay the Hardware MAC Address Using Device Installer to Assign an IP Address Assigning an IP Address using Device InstallerUsing the Devices Details Tab Adding Info to the Device Details Tab Upgrading FirmwareSaving Setup Records Installing Pre-Saved Configuration FilesSave Setup Records Dialog Box Installing Setup RecordsLogging Search and Upgrade Data Options Window, Customization Tab Using Help Using PingUsing Other Device Installer Features Modbus ASCII/RTU Modbus BasicsModbus/TCP Hints and Tips Modbus Basics Swap 4x/0H to get 3x/1x Appendix a Default Configuration SettingsDefault Configuration Settings Manual CD-ROM disc Appendix B Product SpecificationsProduct Specifications Dimensional Diagram of the MES1A Appendix C Dimensional DiagramsDimensional Diagram of the MES1B DTE Appendix D Serial ConnectionsMES1B Terminal Block Pin-out for RS-485 Two-Wire Operation Appendix E Network Connections RJ-45 Pin Signal Wire ColorNetwork Connections Declaration of Conformity