THE SERIALS

Page 4

ELECTRONIC ASSEMBLY reserves

the right to change specifications

without prior notice. Printing and

typographical

errors

reserved.

RS-422 socket (2x5 pins)

Pin

Symbol Function

Pin

Symbol Function

1

VDD

+5V

2

Data In- Receive Data

3

Data In+ Receive Data

4

NC

not connected

5

NC

not connected

6

HS In-

HS In- and

HS Out-

bridged

7

HS In+

HS In+ and

HS Out+

bridged

8

HS Out-

9

HS Out+

10

GND

0V

RS-232C socket (2x5 pins)

Pin

Symbol Function

Pin

Symbol Function

1

VDD

+5V

2

DCD

connection to

DSR and DTR

3

DSR

connection to

DCD and DTR

4

NC

not connected

5

CTS

CTS and RTS

bridged

6

RXD

data input

7

RTS

8

DTR

connection to

DSR and DCD

9

RXD5

CMOS

close

LB10+LB17

10

GND

0V

Connection for 1- to 4-line diplays with EA OPT-RS422

Connection for SER308,SER408,SER3016,SER4016

Connection for 1- to 4-line diplays

Connection for displays with snap-in with EA OPT-RS422

Connection for displays with snap-in

RS-232C Connection / Baud rates

Connection to RS-232C or RS-422 interface is made on a 2x5

pin type socket. With cable EA KV24-9B (accessories not for

RS-422)

The Serials

The Serials

The Serials

The Serials

Transfer rate can be set by jumper on 300, 1200, 2400 or 9600

Baud.

Data format:

If no jumper is set during power on, the display switches into

self test mode and shows its character set.

If the operating unit is ordered together with the EA OPT-RS422 option, special RS-422 drivers are

fitted. The pin assignment in the table on the right then applies.

Incidentally, the same serial data with 5V level and CMOS logic

is available at Pin 9. These level are suitable for direct connection

to a µC. If these signal is used, the solder straps LB 10 + LB 17

must be closed!