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GE 994-0089 user manual Pull-up for TX+

Models: 994-0089

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Switch SW3/SW4 Configuration

Switches SW3 (for Channel 2 on TB1-6 through TB1-10) and SW4 (for Channel 1 on TB1-1 through TB1-5) contain ten DIP-switches that control pull-up and pull-down resistors for the differential data lines and provide line termination between the differential data pairs. Each DIP-switch can be set to ON or OFF to select the appropriate function for the switch. That is, if all pins are set to ON, switch is ON. If all pins are set to OFF, switch is OFF.

If termination/pull up is selected, the TX+ and RX+ signals have a 680 ohm pull-up resistor, the TX- and RX- signals have a 680 ohm pull-down resistor, and the RX and TX signals have a 120 ohm termination.

RS-485 Card Switch SW3/SW4 Settings

SW3/SW4 Pin	Pin Position		Function

1	ON		Pull-up for TX+

	OFF		No pull-up for TX+
	OFF		No pull-up for TX+

2	ON		Pull-down for TX-

	OFF		No pull-down for TX-
	OFF		No pull-down for TX-

3	Not connected

4	ON		Pull-up for RX+

	OFF		No pull-up for RX+
	OFF		No pull-up for RX+

5	ON		Pull-down for RX-

	OFF		No pull-down for RX-
	OFF		No pull-down for RX-

6	ON		Line termination between TX+ and TX-

	OFF		No Line termination between TX+ and TX-
	OFF		No Line termination between TX+ and TX-

7	ON		Line termination between TX+ and TX-

	OFF		No Line termination between TX+ and TX-
	OFF		No Line termination between TX+ and TX-

8	Not connected

9	ON		Line termination between RX+ and RX-

	OFF		No Line termination between RX+ and RX-
	OFF		No Line termination between RX+ and RX-

10	ON		Line termination between RX+ and RX-

	OFF		No Line termination between RX+ and RX-
	OFF		No Line termination between RX+ and RX-

D400 Substation Data Manager User's Manual 33

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GE 994-0089 user manual Pull-up for TX+

Contents

D400 Substation Data Manager Trademark Notices Copyright NoticeContents 994-0089-1.00-2, General Purpose About this DocumentIntended Audience Additional DocumentationDocument Conventions How to Use this GuideSearch Technical Support Product SupportContact Customer Support Product ReturnsGE Energy Before You Start Safety PrecautionsSymbol Meaning Regulatory Compliance Information RoHS Material Declaration Data Content by AssemblyCE Mark Compliance Restriction of Hazardous Substances RoHSProduct Overview Hardware Overview Features14 994-0089-1.00-2, General Product Specifications SystemCommunications Serial communications Signal PropagationRS-232 RS-485Physical ElectricalStorage Recommendations Battery LifeEnvironmental SoftwareInstalling the D400 Installation Steps» Follow these main steps to install and set up the D400 Required Tools Unpacking the D400 Package ContentsShipping Inspection UnpackingFirst Look at the D400 Front PanelRear Panel Rack Mounting Physical Installation» To mount the D400 on a rack Panel Mount » To mount the D400 in a panelSetting up Communication Cards Communication CardsD400 I/O Adapter Card Slots Network Slots 11 Types of Communication Cards» To change the settings on a communication card Changing Card SettingsConfiguration Options Factory DefaultRS-232 Adapter RS-232 Adapter Top Side Switch SW1/SW2 ConfigurationDTE default Switch SW3/SW4 Configuration30 994-0089-1.00-2, General RS-485 Adapter RS-485 Adapter Top Side RS-485 Adapter Bottom Side Pull-up for TX+ Fiber Optic Serial Adapter Switch SW1 ConfigurationGE Energy IRIG-B Input Adapter Switch SW2 Configuration Switch SW3 ConfigurationIRIG-B Input Adapter IRIG-B Distribution Adapter IRIG-B Distribution AdapterPort Twisted-Pair Ethernet Switch Card 4-Port Twisted-Pair Ethernet SwitchHot Standby Fiber Optic Ethernet Switch Card Hot Standby Fiber Optic Ethernet SwitchRedundant TP Ethernet + COM2 Port Adapter Card Redundant Twisted-Pair Ethernet + COM2 Port AdapterCOM2 Port Adapter 11 COM2 Port AdapterUSB KVM Adapter USB KVM & Audio AdapterConnection Types Connecting to Devices and NetworksNetwork Local MaintenanceTime Synchronization Local Substation ComputerCabling Overview Media Designation Cabling ConnectorGeneral Cabling Requirements D400 Field and Network ConnectionsHigh-Voltage Installations RS-232 Connections Number Function Signal FlowCabling Requirements RS-485 ConnectionsIN/OUT Wire Connections 52 994-0089-1.00-2, General Fiber Optic Connections Glass Optical FiberPlastic Optical Fiber See .5 Fiber Optic Serial Adapter for configuration options Fiber Optic Connector Signal Definitions Function IRIG-B ConnectionsIRIG-B Input Adapter IRIG-B Distribution Adapter » To connect a local PC to the D400 Network ConnectionsEthernet Crossover Cable RJ-45 Pin Out D400 Switch/Hub Name D400 Name PinColor Modem Connections COM2 Port DB-9 Connector Signal Definitions Pin Signal DB-9 DB-25 Pin #COM2 Port DB-9 to DB-25 Pin out Local HMI Connection D400 Front Serial Port DB-9 Pin Out Pin # Signal Front Maintenance PortPC Pin # D400 Pin # Signal » To connect your computer to the D400Power Supply Options Powering Up the D400Redundant Power Supply Power ConfigurationsPower Input Ranges Wiring Requirements Power ConnectionsExternal Power Requirements » To connect the power source to the D400If your power supply is… Then… SUPPLY1 SUPPLY2 input Power Source Configurations Connection Wiring DiagramPower Source Connection Wiring Diagram Power Fail Alarm Power Supply Alarms» To connect the Power Fail contact closure Wire the lamp between…Power Fail Alarm Connection System Fail» To connect the System Fail relay System Fail Alarm Connection System Status LEDs Front Panel LEDsD400 Front LEDs LED Display Status DescriptionSerial Port Status LEDs Configuring the D400 Connecting to the D400 for the First Time» To connect to the D400 Under Function, arrow … » To configure the network interface GE Energy Default IP address is Servicing the D400 Removing the D400 Main Module » To remove and re-insert the D400 main moduleD400 Main Module D400 Battery Location Replacing the BatteryBefore You Remove the Battery… Supported Battery TypesSupported battery replacements Manufacturer Mfg. Part Cleaning and Handling Lithium Batteries » To insert or replace the D400 batteryChecking Voltage Disposing of BatteriesChanging the CompactFlash User CompactFlash Access Panel» To change the System CompactFlash card » To change the User CompactFlash cardBefore You Remove the Power Supply… Replacing the Power Supply» To replace a D400 power supply unit D400 Power Supply UnitStandards & Protection Category Standard Name Description GE EnergyIeee Product Identification Ordering GuideSerial Communications Slots D400 Ordering GuideModification Record Authentication RecordVersion Rev Date Author Change Description