Network Technologies ST-xU operation manual Loop Back, Unit Address

Page 33

NTI NODEMUX SERIES UNIVERSAL KVM SWITCH

Loop Back

In order for an RS232 command and a response to the command to be viewed at the terminal screen, the NODEMUX must have its Loop Back feature enabled.

More than one NODEMUX may be connected to a terminal at a time. To do so, a Matrix-Y-1 cable (available from NTI) must be used. (See Fig. 32). For each additional NODEMUX connected, another Matrix-Y-1 cable will be required.

If the NODEMUX is one of two or more switches being controlled via RS232, and if the NODEMUX is not that last switch in the series of switches controlled, then this setting should be changed to "DISABLED".

If the NODEMUX is the only device controlled via RS232 , or if it is the last device in a series of devices being controlled, then this setting should remain "Enabled". (See Figure 32)

To enable or disable loop back, from the Switch Configuration mode menu (above),

press <Tab> until the cursor bar moves to highlight "LOOPBACK".

CPU

RS232

Matrix-Y-1

Matrix-Y-1

Matrix-Y-1

Serial Port

 

 

 

(terminal)

 

 

 

 

RS232

 

RS232

RS232

Press < > (up arrow) or < > (down arrow) to enable or disable loop back as needed for the application.

NODEMUX

NODEMUX

NODEMUX

SWITCH

SWITCH

SWITCH

First Unit

Second Unit

Last Unit

Disable Loopback

Disable Loopback

Enable Loopback

Figure 32- Daisy chain configuration with Matrix-Y-1 cable

Unit Address

In order for a terminal to communicate with one or more NODEMUX switches, each switch must have a unique address. The NODEMUX will only respond to commands from a terminal if its address is embedded in the command. Up to 15 NODEMUX switches can be connected in a "daisy chain" to a terminal, each with its own unique address.

To set the address of the NODEMUX, from the Switch Configuration mode menu (Fig. 31 on page 28), press <Tab> until the cursor bar moves to highlight "RS232 UNIT ADDRESS".

press < > (up arrow) or < > (down arrow) until the desired address (1-15) is selected.

Exit Switch Configuration Mode

Once changes are made to the Switch Configuration menu, press <Enter> and <Y> to save them.

To exit without saving, press <Esc>, then <N>, then <Esc> again. The menu will return to the Administration Mode without saving the changes made. .

Changes made will take effect the next time the NODEMUX is power cycled.

Note: In order to connect multiple NODEMUX units together a Matrix-Y-1 cable must be used. (See Fig. 33.) See Fig. 34 for the pinout of the Matrix-Y-1 cable.

RS232

Matrix-Y-1

Matrix-Y-1

Matrix-Y-1

CPU SerialPort

 

 

 

RS232

 

RS232

NTI

 

NTI

SWITCH

 

SWITCH

 

 

 

FirstUnit

 

SecondUnit

Figure 33- RS232 connection with Matrix-Y-1 cable

RS232

NTI

SWITCH

LastUnit

29

Image 33
Contents ST- xU Trademark Table of Contents Table of Figures Introduction FeaturesAvailable Options Supported DevicesMaterials Supplied MaterialsFeatures and Functions To Mount to a Rack Rackmounting InstructionsDip-switch configuration InstallationConnect a PS/2 keyboard and mouse Connect a PS/2 CPU For each CPUSuncpu Connect a touch-screen monitor to an ST-8U-TS-R For Units with Touch-screen support -TSO optionLimitations CascadingCascaded Installation ConfigurationCable Required Basic cascaded master-to-slave cable connectionsOperation Basic Command ModeFront Panel Control Keyboard ControlScan Mode LED will toggle on and OFF Command Functions Contd Function KeystrokeBroadcast Mode LED will toggle on and OFF Xxx from 002 to 255. ie. t002Enabling the Security Feature OSD ControlSecurity Option User Login Mode Administration ModeAdditional Modes Available With Security Configure for Cascading Switch ConfigurationAdministrator Password Exit Switch Configuration ModeTab System Access List User Access FunctionsOSD Command Mode User Name ListCtrl + E Ctrl + M Ctrl + O Command Mode menusCommand Mode Cont’d FunctionKeystroke Edit Mode Edit ModeEsc Enter Search ModeActivate security features Maintenance ModeTouch Maintenance Mode Help ModeOSD Touch Screen Support Reset Default Values Align The CursorOSD Entry Method Configuration via Dip Switches RS232 Connections and ConfigurationRS232 Connector DB-9 Female Remote ConnectionUnit Address and Loop Back Configuration via OSDUnit Address Loop BackPinout of Matrix-Y-1 cable Command ProtocolFormat RU Aacr Keyboard key layouts KEYBOARD-TO-CPU TranslationLocation of jumper block HOW to Disable Operating ModesCase screws must be removed For models ST-xU no OSDClear access to the jumper block For models ST-xU-O with OSD Component layout in unit with OSD Configuring the Jumper Block NON-OSD Touch Screen SupportOptional-4 and 8 port models only Troubleshooting Warranty InformationAlways turn power on in this sequence