4

EA KIT120-5

RS-232 / PORT Box Header J3

Pin Symbol In/Out

Function

EA KV24-9B10

1

VDD

-

Pin

2

DCD

-

Bridge to DTR

1

9-pin

SUB-D

3

DSR

-

Bridge to DTR

6

4

TxD

Out

Transmit Data

2

5

CTS

In

Clear To Send

7

6

RxD

In

Receive Data

3

7

RTS

Out

Request To Send

8

8

DTR

-

seePin 2, Pin3

4

9

-

-

NC

9

10

GND

-

0V Ground

5

11

IN1

In

CMOS Input 1

10-pin

IDC

socket

1

12

OUT1

Out

CMOS Output 1

2

13

IN2

In

CMOS Input 2

3

14

OUT2

Out

CMOS Output 2

4

15

IN3

In

CMOS Input 3

5

16

OUT3

Out

CMOS Output 3

6

17

IN4

In

CMOS Input 4

7

18

OUT4

Out

CMOS Output 4

8

19

IN5

In

CMOS Input 5

9

20

OUT5

Out

CMOS Output 5

10

5V RS-232 Solder Pads J5

Pin Symbol In/Out Function

1

WP

In

EEprom Write Protection

2

VDD

+5V Power Supply

3

GND

0V Ground

4

TXD5

Out

Transmit data CMOS

5

RXD5

In

Receive data CMOS

6

RTS5

Out

Request To Send CMOS

7

CTS5

In

Clear To send CMOS

SUPPLYVOLTAGE / RS-232 CONNECTION

In the standard model, the supply voltage of +5V is fed in via screw-

type terminal J1. Alternatively, the 5V supply can be connected via

J3 (pin 1 and pin 10).

Note: It is imperative that the polarity is correct.

The 20-pin connector J3

contains the connection for

the RS-232 interface

(±12V) and the 5 inputs and

outputs (5V C-MOS level).

The baud rate is set in the

factory to 9600. You can

use

the

program

KITBAUD.EXE (available

on

to

configure it. To do this, you have to connect the KIT to COM1 or

COM2 and pass the new baud rate as a parameter (e.g. KITBAUD

19200). The following baud rates can be set: 1200, 2400, 4800,

9600, 19200, 38400, 56700 and 115200.

Please note that the internal data buffer is only 32 bytes. The RTS

handshake line must therefore be queried (+10V level: data can be

accepted; -10V level: display is busy). The data format is set

permanently to 8 data bits, 1 stop bit, no parity.

If the RS-232 data is fed in to J5 at the 5V level, solder straps LB2 and

LB3 must be opened.

WRITE PROTECTION FOR MACRO PROGRAMMING

Closing solder strap LB1 (WP-VDD connection) prevents the programmed macros, images and fonts

from being overwritten inadvertently. The baud rate can then no longer be set either.

INPUTS AND OUTPUTS

The KIT120 is supplied with 5 digital inputs and 5 outputs (5V CMOS level, non-isolated). The connection

is made at the 20-pin connector J3.

5 outputs: Each line can be controlled by means of the „ESC Y W“ command. The maximum current per

line is 6mA.

5 inputs: The inputs can be queried and evaluated („ESC Y R“) directly via the serial interface. Each

change of logic level (0V or 5V) at the inputs can start an internal port macro. When the 5 lines are

combined, 32 port macros can be addressed. Each of these port macros can change the contents of the

screen or switch an output. This allows a wide range of control tasks to be carried out. To create the port

macros, you need a PC and the floppy disk EA DISK240. You will find a more detailed description of this

on page 6. Automatic poll querying can be disabled by means of the „ESC Y A 0“ command.

Note: The logic circuitry is designed for slow operations; in other words, more than 3 changes per second

cannot be easily executed. If an input is open, this is evaluated as high (approx. 50 kOhm pullup).