2) Serial Interface Pin Outs
3) The Serial Interface
The 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.
CLD-V2600 / 2400 Level I & III • Chapter Two
CLD-V2600 / 2400 Level I & III User’s Manual
TP 117
v. 2.0 • 12/93
2-11
Pin #
Terminal
Input/Output
Level
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
0
1
START
STOP
D0
D1
D2
D3
D4
D5
D6
D7
1 START + 8 DATA + 1 STOP
Figure 2-N