Network Technologies ST-xU RS232 Connections and Configuration, Remote Connection, Baud Rate

Page 31

NTI NODEMUX SERIES UNIVERSAL KVM SWITCH

RS232 CONTROL

RS232 Connections and Configuration

Rear View of ST-4U-RS

NTI

 

RS232

1275 Danner Drive, Aurora Ohio 44202

330-562-7070

www.nti1.com

 

 

R

NETWORKTECHNOLOGIES INCORPORATED

 

 

 

 

V

V

V

V

M

 

 

 

 

I

I

I

I

O

 

 

 

 

D

D

D

D

N

 

 

 

 

E

E

E

E

I

 

 

 

OFF

O

O

O

O

T

 

 

 

 

 

 

 

O

 

 

 

1 2 3 4 5 6 7 8

4

3

2

1

R

 

 

 

ON

 

 

 

 

 

 

5VDC

 

 

 

 

 

 

DAISY

DAISY

2A

 

 

CPU 4

CPU 3

CPU 2

CPU 1

DEVICES OUT

IN

-+

Remote Connection

The RS232 Interface is designed to meet the RS232C standard and can be controlled from any terminal (CPU or other controller with an RS232 communications port.). The pin-out for the DB-9 connector on the unit is as follows:

RS232 Connector (DB-9 FEMALE)

PIN

SIGNAL

FUNCTION

1

CD

Carrier Detect

 

 

 

2

TXD

Transmit data (RXD at host)

 

 

 

3

RXD

Receive data (TXD at host)

 

 

 

4

DTR

Data terminal ready

 

 

 

5

GND

Signal ground

 

 

 

6

DSR

Data set ready

 

 

 

7

RTS

Request to send

 

 

 

8

CTS

Clear to send

 

 

 

9

-

No connection

 

 

 

Note: Security must be disabled or user access granted on the port(s) to be selected by RS-232 control.

On the DB-9 female connector, pins 1 (DCD), 4 (DTR), and 6 (DSR) are shorted and pins 7 (RTS) and 8 (CTS) are shorted. Therefore, host handshaking is bypassed and TXD and RXD are the only active signals. A straight through DB-9 cable (not null modem) will work for most CPUs. To daisy chain multiple units, a Matrix Y-1 cable is used (see page 29) for each NODEMUX in the chain. The last unit will have no connection on its output port and should have DIP switch 1 ON (see table under "Unit Address and Loop Back" on page 28).

Configuration via Dip Switches

Note: Only legacy NODEMUXs have the dip switch for RS232 configuration. If the dipswitch (as shown above) is not present, refer to "Configuration via OSD" on page 28.

Baud Rate

The baud rate can be changed by powering down the unit, changing the 8 position RS232 dip switch on the rear of the NODEMUX (legacy switches only) , and then powering back up. The table below shows how to set the baud rate.

 

DIP SWITCH

BAUD RATE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

3

2

 

 

 

 

 

 

 

OFF

OFF

 

OFF

OFF

300

 

 

 

 

 

 

 

 

 

 

 

1 2 3 4 5 6 7 8

OFF

 

OFF

ON

600

 

 

 

 

 

 

 

 

 

 

 

 

ON

OFF

 

ON

OFF

1200

OFF

 

ON

ON

2400

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON

 

OFF

ON

9600

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON

 

ON

OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON

 

ON

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 30- RS232 dip switches

27

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Page 30 Page 32
Contents ST- xU Trademark Table of Contents Table of Figures Supported Devices FeaturesIntroduction Available OptionsMaterials 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 connectionsKeyboard Control Basic Command ModeOperation Front Panel ControlXxx from 002 to 255. ie. t002 Command Functions Contd Function KeystrokeScan Mode LED will toggle on and OFF Broadcast Mode LED will toggle on and OFFOSD Control Enabling the Security FeatureSecurity Option Administration Mode User Login ModeAdditional Modes Available With Security Configure for Cascading Switch ConfigurationExit Switch Configuration Mode Administrator PasswordTab User Name List User Access FunctionsSystem Access List OSD Command ModeCtrl + E Ctrl + M Ctrl + O Command Mode menusCommand Mode Cont’d FunctionKeystroke Edit Mode Edit ModeEsc Enter Search ModeActivate security features Maintenance ModeHelp Mode Touch Maintenance ModeOSD Touch Screen Support Align The Cursor Reset Default ValuesOSD Entry Method Remote Connection RS232 Connections and ConfigurationConfiguration via Dip Switches RS232 Connector DB-9 FemaleUnit 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 NON-OSD Touch Screen Support Configuring the Jumper BlockOptional-4 and 8 port models only Warranty Information TroubleshootingAlways turn power on in this sequence
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