Omega Speaker Systems iLD Series manual Serial Communication Interfaces For Models with RS485 Port

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2.4 Serial Communication Interfaces (For Models with RS485 Port)

The iLD Big Display controller/monitor with the Embedded Ethernet Server option board support only RS485/422 interfaces. These standards define the electrical characteristics of a communication network. The RS485 port of the Ethernet Server is fully compatible for use with RS422 instruments. The RS485 is an extended version of the RS422 communication standard which increases the allowable number of devices from 10 to 32 by improving the electrical characteristics.

•The RS485 standard (multi-point) allows one or more devices (multi-dropped) to be connected to the Ethernet Server using a two-wire connection (half-duplex) +Rx/+Tx and –Rx/-Tx. Use of RS485 communications allows up to 32 devices to connect to the Web Server with cable length up to 4000 feet long.

Although the RS485 is commonly referred to as a "two wire" connection, the Web Server also provides a ground/return shield connection to use as a common connection for EMI noise protection.

Table 2.2 shows some characteristics of the RS485 communication interface.

Table 2.2 Data Transmission Characteristics RS485

Data Transmission Characteristics	RS485
Transmission Mode	Differential
Electrical connections	2 wire
Drivers per line	32 drivers
Receivers per line	32 receiver
Maximum data rate	10M bits/s
Maximum cable length	4000 ft (1200 meters)

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Contents User’s Guide OMEGAnet On-Line Service Internet e-mail Info@omega.com Servicing North AmericaTable of Contents Rear Panel View of i16 and i8 Series Meters with List of TablesBefore You Begin Inspecting Your Shipment Customer ServiceManuals, Software Part Introduction Safety and EMC ConsiderationsEMC Considerations IServer on the Ethernet Network Part Hardware Physical Characteristics and MountingTB4 DIP Switches on the iServer Network Communication Interface SectionData Transmission Characteristics RS485 Serial Communication Interfaces For Models with RS485 PortHalf Duplex Hookup TB4 Pin# ILD Big Display Wiring RS485 InterfaceDevice # with RS485 RJ45 Pinout 2 10Base-T Crossover Wiring Network Communication Interfaces 1 10Base-T RJ-45 PinoutNetwork Protocols Part Network ConfigurationEthernet MAC Address DIP Switch on the iServer DNS DhcpIP Address Default IP AddressPort Number Command Prefix Command Class Meaning Part OperationsLSB MSB Pinging eis03ec MS-DOS Prompt Device Type IServer Home Page MenuRead Devices Read Devices Device SetpointsDevice Setup Device Setup Modify Device Parameters or Device List EntryConfiguration 10 Configuration Serial CommunicationTerminal Server Device No. Refer to Section Access Control 11 Access ControlAccess Control Host Name Refer to .4, DNS 3 4 OFFSetting a New IP Address over the Network 12 Access Control13 Terminal Server Configuration Terminal Server FunctionTerminal Emulation 14 Terminal EmulationTelnet Setup Tera Term Telnet Connection Screen17 Telnet Setup iServer Help \iServer\Httpget\httpget -r -S *01X01\r Httpget Program01X01074.3 18 ARP Commands and Responses ARP ProtocolRemote Access Tunneling 19 PC-to-Device Communication21 Configuration Menu Remote iServer Remote iServerLocal iServer Under Terminal Server section, set Number of Connections toInstallation Mail Notifier SoftwareProgram Options Setup and Configuration Email Connection Mapi AccessDevice Setting and Configuration Device setup requires 25 iServer Mail Notifier Device SettingProcessor CPU Part Specifications Serial InterfaceNetwork Interface Internal WEB ServerNetwork Interface Serial InterfaceAppendix a Glossary Appendix B IP Address Class B Appendix C IP NetmaskMask Dotted Notation Mask Binary Mask Bits Class a Class CDec Hex Binary Appendix D Ascii ChartAscii Dec Hex Binary Char No Parity No parityDec Hex Ctrl Key Definition Appendix D Ascii Chart ContinuationAscii Control Codes Dec Hex Ctrl Key Definition Char EquivPart Approvals Information CE Approvals Information WARRANTY/DISCLAIMER Shop on line at omega.com