Communication
11
3.0
Communication
3.1
RS-232C Interface
3.1.1
Specification
Baud Rate: 4800, 9600, 19200, 38400 bps
Start Bit:
1 Bit
Stop Bit:
1,2 Bit
Data Bit:
7,8 Bit
Parity Bit:
Even, Odd, None
3.1.2
Pin Assignment
Table 3-1. Pin Assignment
Inside DSX-1000
CNI (5 pins)
DSX-1000 SIDE
DB9
PC Side
1
RXD
2
RXD
2
RTS
7
RTS
3
TXD
3
TXD
4
CTS
8
CTS
5
GND
5
GND
If handshaking is not necessary for the RS-232 equipment being connected to the scale, RTS and CTS do not need
to be connected (Spec. 1). See Section 2.3 on page 9.
3.2
Control Code and Characters
Table 3-2. Control Code and Characters
Control Code
Character
Description
Hex Values
Termination
Code
CR
Carriage return
0x0d
LF
Line feed
0x0a
Date
0 - 9
Numeric date
0x30 - 0x39
- (minus)
Minus sign
0x2d
. (decimal)
Decimal
0x2e
(space)
Data error or empty
0x20
OF
Overflow
0x4f 0x46
UF
Underflow
0x55 0x46
Header Code
0
Net Weight
0x30
4
Tare Weight
0x34
B
Status and Weight condition
0x42
V
Scale Number
0x56
Command
ENQ
Enquiry
0x05
ACK
Acknowledge
0x06
NAK
Not Acknowledged
0x15
TXD
RXD
GND
