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Front View of the ESR901, ESR902 and ESR904 Serial Servers Manual Documentation Number: ESR90x-0508m Chapter 2 B&B Electronics Mfg Co Inc – 707 Dayton Rd -Ottawa IL 61350 -Ph 815-433-5100 -Fax 815-433-5104 – B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – Making the Hardware Connections ESR90x Indicators, Switches and Connectors Indicators • One bi-color Link LED (Yellow = 10BaseT, Green = 100Base T) • One green Ready LED (flashing = system ready) • One red Power LED • One red RX LED and one green TX LED for each serial port Switches Reset A recessed reset switch that allows the united to be reset. Insert a small plastic tool, press lightly and hold for three seconds. The Link and Ready lights will go out and then come back on. Run/Console Switch A recessed single DIP (dual inline package) switch that allows the Serial Server to be switched between Run Mode and Console Mode. When switched to the Console position the Serial Server enters Console Mode. This allows you to configure the Serial Server from a PC running a terminal program such as HyperTerminal without connecting the server to the network. To communicate with the connected serial device the switch must be returned to “Run” position. DB-9/Terminal Switch (ESR901 only) Allows connection to the serial port (RS-232, 422 or 485) via the DB-9M connector or the five-terminal removable terminal block. Connectors Ethernet Connector One standard RJ-45 receptacle that allows the Serial Server to be connected to an Ethernet hub, switch, or wall plate using a standard straight-through RJ45 (male) Ethernet cable. To connect directly to an RJ-45 Ethernet port on a PC or laptop a crossover Ethernet cable must be used. 10 Chapter 2 Manual Documentation Number: ESR90x-0508m B&B Electronics Mfg Co Inc – 707 Dayton Rd - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – Making the Hardware Connections Serial Port(s) • ESR901: One serial port with two connector options: one (DB-9M) or one five-terminal removable terminal block (DIP switch selectable) • ESR902: Two serial port connectors (DB-9M) • ESR904: Four serial port connectors (DB-9M) N NNo oot tte ee: :: Refer to Appendices A, B and C for connection pin-outs. Power Connector The power connector is a removable terminal block with four terminals. From top to bottom the terminals are: Terminal Connect to Description GND Negative side of DC power supply (if DC power used) Also connect negative side of Backup DC power supply (if used) Internally, the chassis ground of the Serial Server is connected to this terminal. AC In One side of AC power supply (if AC power used) Either AC or DC power can be used to power ESR Serial Servers. Power supply can voltages range from 9 V to 48 VDC or 8 V to 24 VAC.AC/DC + In The other side of AC power supply (if AC power used) OR Positive side of DC power supply (if DC power used) Backup DC+ In Positive side of Backup DC power supply Backup power must be DC voltage and can be any voltage between 9 VDC and 48 VDC. Serial Server/Port Operational Modes Using the ESP Manager, Web Server or Telnet the Serial Server can be put into Console Mode, Default Mode or Upgrade Mode. The serial ports can be configured for RS-232, RS-422, RS-485H (half duplex) or RS-485F (full duplex) operation. The server also can be put into Console Mode by placing the Run/Console switch in the Console position. Manual Documentation Number: ESR90x-0508m Chapter 2 B&B Electronics Mfg Co Inc – 707 Dayton Rd -Ottawa IL 61350 -Ph 815-433-5100 -Fax 815-433-5104 – B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – Making the Hardware Connections Default Mode When Default Mode is selected and the server properties are Updated (Saved) all the configuration settings return to their default values. N NNo oot tte ee: :: Refer to Chapter 5 for details on Serial Server Configuration settings. See Chapter 12 for Serial Server default parameters. Console Mode In Console Mode the Configuration Menu can be accessed from a PC by connecting its RS-232 serial port to the ESR901 serial port or ESR902/904 Serial Port 1. Since the computer is a DTE device, and the serial ports are configured as DTEs (with DB-9M connectors), a null modem crossover cable must be used. In Console Mode the default serial port settings are: 9600 baud, 8 data bits, No parity, and 1 stop bit. From Windows, HyperTerminal with VT100 terminal emulation can be used for Console Mode configuration. N NNo oot tte ee: :: Refer to Chapter 9 for details on Console Mode Upgrade Mode In Upgrade Mode firmware can be uploaded from a PC via its serial port to the ESR901 serial port or ESR902/904 Serial Port 1. Upgrading a...

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