characters, counts from the transmitting head

12

1

End sign

03H

44 bytes in total

Transmitting the accumulated weight by using the format below:

Sect

Length (byte)

Definition

Descrition

1

1

Beginning sign

02H

2

1

Transmitting head

A～Z, representing indicator address

3

4

Sign

“SUM=”

4

11

Weight

ASCII character string

5

3

Unit

space + t/kg/g/mg

6

1

Enter key

0DH

7

2

Verifying sum

1 byte (in hex) verifying sum in 2 bytes ASCII

 

 

 

characters, counting from the transmitting head

8

1

End sign

03H

24 bytes in total

3.Indicator communicating parameter setting:

1). Communicating parameter

Consisting of communicating address (parameter P21), baud rate (parameter P19) and

communicating mode (parameter P20). 2). Parameter Setting

Refer to Keys Function chapter for setting methods

8. Scoreboard Connection

▲! The down-lead of scoreboard must be connected to the scoreboard accurately. If be connected in wrong way, damages will happen to the output port of indicator and the input port of scoreboard, and sometimes damage will happen to the indicator and the scoreboard. Special wire is required in connection.

1.The interface of the scoreboard adopts the 15-pin RS232 plug (using the same socket with the COM port). Refer to 9 and 10 pin in Figure 6 for down-lead definition:

2.The 20mA current loop signals or RS232 signals is supposed to be the signals of scoreboard and are serially transmitted by means of binary coded character with baud rate as 600. Each frame of datum has 11 bits: 1 start bit (0), 8 data bits (low bit in front), 1 sign bit and 1 stop bit.

3.One set of datum is transmitted once every 200ms and each set of datum consists of 3 frame datum.

The first frame：

1

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

bit

0

 

 

 

 

 

 

 

 

9

10

 

1

2

3

4

5

6

7

8

 

 

 

d0

d1

d2

d3

d4

d5

d6

d7

 

 

 

 

start

 

 

 

 

 

 

 

 

sign

stop

 

 

bit

 

X

 

Y

 

G18 G16

G17

bit

bit

(图 6.1 ) The first frame view

The second frame：