Denso BHT-7000 User Manual

132

Signal Input/Output

External
device

RS-232C Interface Port (Dsub-25S) on the CU-7000

25

13

14

1

1

FG

Frame ground

—

2

SD

Send data

→

3

RD

Receive data

←

4

RS

Request to send

—

5

CS

Ready to send

—

6

DR

Data set ready

—

7

SG

Signal ground

—

8

CD

Carrier detect

—

20

ER

Data terminal equipment ready

—

CU-7000

Pin No.

Signal

Functions

NOTE

Shown below is a diagram of the internal connection in the CU-7000.

2

7

8

20

6

5

4

3

1

SD

SG

CD

ER

DR

CS

RS

RD

FG

Not used.

RS-232C
Interface
Circuitry

Optical
Communications
Interface
Circuitry

BHT-7000

Optical Interface

CU-7000

Signal
Name

Pin No.

Host computer,
modem, or
other devices