CLD-V2600 / 2400 Level I & III • Chapter Two

2) Serial Interface Pin Outs
Pin #TerminalInput/OutputLevel

 

 

 

 

1

GND

 

 

2

TXD

OUTPUT

RS-232C

3

RXD

INPUT

RS-232C

4

DTR

OUTPUT

+5V PULLUP

5

No Connection

 

 

6

No Connection

 

 

7

No Connection

 

 

8

No Connection

 

 

9

TXD

OUTPUT

TTL

10

RXD

INPUT

TTL

11

GND

 

 

12

No Connection

 

 

13

No Connection

 

 

14

No Connection

 

 

 

 

 

 

15

GND

 

 

 

 

 

 

Figure 2-M

3)The Serial InterfaceThe Signal Level

RS-232C or TTL levels can be used. The signal level for the RS-232C is ± 12v and the TTL levels are 0 to 5v, with 5v having a logic “1” value. Signals in both levels cannot be used or connected at the same time.

The Data type

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Parity bit

:

No parity.

 

 

 

 

 

 

 

 

 

 

Data length

:

8 bits.

 

 

 

 

 

 

 

 

 

 

 

Stop bit

:

1 bit.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 START + 8 DATA + 1 STOP

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D0

 

D1

D2

D3

D4

D5

D6

D7

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

START

 

 

 

 

 

 

 

 

 

STOP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 2-N

CLD-V2600 / 2400 Level I & III User’s Manual TP 117 v. 2.0 • 12/93

2-11