RS-232C

The following functions can be controlled by using the RS-232C interface.

$ Basic operations

The same basic operations as those performed by the unit’s buttons and switches can be initiated.

$ Status checks

The unit’s current operation mode can be checked.

$ Setting menus

The setting menu items can be detected and set.

$ Search function

Specific frame positions can be searched.

1. Hardware specifications

(1) Interface specifications

Connector:

D-Sub 9-pin

DCE specifications (straight cable supported)

Pin No.

Signal

Description

 

 

 

1

GND

GND

 

 

 

2

SD (TXD)

Transmitted Data

 

 

 

3

RD (RXD)

Received Data

 

 

 

4

ER (DTR)

Data Terminal Ready

 

 

 

5

SG

Signal GND

 

 

 

6

DR (DSR)

Data Set Ready

 

 

 

7

CS (CTS)

Clear to Send

 

 

 

8

RS (RTS)

Request to Send

 

 

 

9

N.C

=====

 

 

 

Example of connections (9P)

 

 

 

 

PC side

 

Unit side

 

 

 

 

 

 

 

 

 

1

 

CD

 

 

 

1

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

SD

 

 

 

3

 

RD (RXD)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

RD

 

 

 

2

 

SD (TXD)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

RS

 

 

 

7

 

CS (CTS)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

 

CS

 

 

 

8

 

RS (RTS)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

 

DR

 

 

 

6

 

ER (DTR)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

SG

 

 

 

5

 

SG

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

ER

 

 

 

4

 

DR (DSR)

 

 

 

 

 

 

 

 

 

 

 

 

 

Example of connections (25P)

 

 

 

 

PC side

 

Unit side

 

 

 

 

 

 

1

 

FG

 

1

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

2

 

SD

 

 

 

3

 

RD (RXD)

 

 

 

 

 

 

 

 

 

 

 

 

3

 

RD

 

 

 

2

 

SD (TXD)

 

 

 

 

 

 

 

 

 

 

 

 

4

 

RS

 

 

 

7

 

CS (CTS)

 

 

 

 

 

 

 

 

 

 

 

 

5

 

CS

 

 

 

8

 

RS (RTS)

 

 

 

 

 

 

 

 

 

 

 

 

6

 

DR

 

 

 

6

 

ER (DTR)

 

 

 

 

 

 

 

 

 

 

 

 

7

 

SG

 

 

 

5

 

SG

 

 

 

 

 

 

 

 

 

 

 

 

20

 

ER

 

 

 

4

 

DR (DSR)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(2) Communication parameters

The unit’s communication parameters are as follows. To change any of these parameters, make the changes on the menus.

Baud rate

: 9600 bps

Bit length

: 7 bits

Stop bit

: 1 bit

Parity

: Odd

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