MODEL: 22LS1

22LS1 SPECIFICATIONS

ES-6557 Rev.6 Page 5/7

http://www.m-system.co.jp/

EXTERNAL VIEW

A

B

C

D

E

F

LINE

RT

RUN

RUN

PWR

SA1

8

7

6

5

4

3

2

1

ON

SA2

Power Indicator LED

RUN Indicator LED

Station No. Setting

Rotary Switches

Master/Slave Selecting

DIP Switches

Modem Type Selecting

Euro Type Connector Terminal

Jumper Pin

RS-232-C Connector

ABBR.

PIN NO.

EXPLANATION OF FUNCTION

CF (CD)

1

Received Line Signal Detector

BB (RD)

2

Received Data

BA (SD)

3

Transmitted Data

CD (ER)

4

DTE Ready

AB (SG)

5

Signal Common

CC (DR)

6

DCE Ready

CA (RS)

7

Request to Send

CB (CS)

8

Clear to Send

(RI)

9

(Not Used)

■ RS-232-C INTERFACE

5

1

9

6

• RS-232-C Connection Example

BA

BB

CA

CB

CC

AB

CF

CD

(SD)

(RD)

(RS)

(CS)

(DR)

(SG)

(CD)

(ER)

Modem

(model: MODx)

CF (CD)

BB (RD)

BA (SD)

CD (ER)

AB (SG)

CC (DR)

CA (RS)

CB (CS)

(RI)

Modem Interface

(model: 22LS1)

1

2

3

4

5

6

7

8

20

1

2

3

4

5

6

7

8

9

Use a cross-type cable as shown above.

CONNECTION DIAGRAM

+

–

A

B

C

D

E

F

U(+)

V(–)

POWER

7

8

9

TERMINATOR

JUMPER PIN*

TWISTED PAIR

RUN CONTACT

OUTPUT

GROUNDING FG

*When the unit is located at the end of transmission line via

twisted-pair cable (= no cross-wiring), short across the terminals

C – D with the jumper pin (or wire) provided with the unit.

Remove the jumper pin for the one not located at the end.

RS-232-C