Network Technologies KEEMUX-Px RS232 Connections and Configuration, Remote Connection, Baud Rate

Page 21

NTI KEEMUX Series PS/2 KVM Switch

RS232 CONTROL

 

 

 

 

 

 

 

 

 

(Optional)

Rear View of KEEMUX-P4-RS

 

 

 

RS232 Connections and Configuration

 

O

 

O

O

O

 

O

RS232

 

 

 

OFF

 

 

V

 

V

V

V

 

M

 

 

 

I

 

I

I

I

 

O

 

 

 

D

 

D

D

D

 

N

 

 

 

 

 

I

 

 

 

E

 

E

E

E

 

 

 

 

 

 

 

 

 

 

T

 

 

 

4

 

3

2

1

 

R

1 2 3 4 5 6 7 8

 

 

 

 

ON

2A

NTI

R

U

U

U

 

U

Mouse

 

 

 

C

C

C

 

C

Keyboard

 

5VDC

 

 

P

P

P

 

P

 

 

 

 

Daisy

Daisy

- +

1275 Danner Dr

 

4

3

2

 

1

Out

In

Aurora, OH 44202

 

 

 

 

www.nti1.com

 

 

 

 

 

 

 

 

 

Tel:330-562-7070

 

 

 

 

 

 

 

 

 

Fax:330-562-1999

CPU 4

 

CPU 3

CPU 2

CPU 1

PS/2 DEVICES

 

 

 

 

 

Remote Connection

The RS232 Interface (optional) is designed to meet the RS232C standard and can be controlled from any CPU or other controller with an RS232 communications port. The pin-out for the DB-9 connector(s) 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 18) for each KEEMUX in the chain. The last unit in the chain should have DIP switch 1 ON (see table under "Unit Address and Loop Back" on page 18).

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 KEEMUX, and then powering back up. This table shows how to set the baud rate.

 

DIP SWITCH

BAUD RATE

4

 

3

2

 

OFF

 

OFF

OFF

300

OFF

 

OFF

ON

600

OFF

 

ON

OFF

1200

OFF

 

ON

ON

2400

ON

 

OFF

ON

9600

ON

 

ON

OFF

ON

 

ON

ON

 

OFF

1 2 3 4 5 6 7 8 ON

17

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Contents KEEMUX-Px MAN077 Rev Date 7/1/2007 Table of Contents Table of Figures Materials IntroductionAvailable Options LimitationsFeatures and Functions Installation Prepare To ConnectMake Connections Rear View of KEEMUX-P8 AT Style ConnectorPower Up CascadingLimitations Cascaded Installation ConfigurationFront Panel Control Using the NTI Keemux PS/2 KVM SwitchCommand Functions Keystroke Increment Port Basic Command ModeKeyboard Control Keyboard CtrlScan Mode Broadcast ModeNormal Mode User Login Mode Enabling the Security FeatureOSD Control Security OptionAdministration Mode Additional Modes Available With SecurityUser Name List System Access List User Access FunctionsOSD Command Mode Keystroke Ctrl + S Ctrl + B Ctrl + E Ctrl + MPress Ctrl for more functions OSD Command Mode Contd FunctionKeystrokeErase previous character Edit ModeSearch Mode Maintenance ModeEsc Enter Help Mode Maintenance Mode Cont’d FunctionKeystrokeActivate security features RS232 Connections and Configuration Remote ConnectionBaud Rate Unit Address and Loop Back Wiring Schematic of Matrix-Y-1 cableRS232 Matrix-Y-1 CPU Serial Port First Unit Second Unit Last UnitFormat RS Aacr Command ProtocolResponse Format CS AA,XX,YYCRKeyboard Mapping Format RO AA,XXCRFormat RU Aacr For models KEEMUX-Pxin a plastic case HOW to Disable Operating ModesOverhead view of inside of Keemux DDC Support Configuring The Jumper BlockKcmd BrdcAudio Support Dual Video SupportOptional- 4 port models only Problem No Video Troubleshooting
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