Connection Between Serial Communication Interface And - Pro XK3190-A9+ User Manual

First frame data：mark bit is 0
X : D0、D1、D2 – is the location of decimal ( 0～4 )
Y : D3 — is weight symbol ( 1－negative、0－positive )
G 18～G16: Weight (N.W.) data
Second frame：mark bit is 0
G15～G8: Weight (N.W.) data
Third frame：mark bit is 1
G7～G0 ： Weight data
G0～G18：19 digits ACII code of weight (N.W.) consist by the digits from low to high
V. Connection between Serial communication interface and indicator
▲！communication interface output line should connect with computer correctly, if
there is any mistake on that, it will damage indicator output interface or computer
communication input interface or even damage indicator and computer and its
external devices.
▲！For computer communication, it requires knowing computer technology and
programming ability. Unprofessional people, please don't connect it at your will.
XK3190-A9+ has RS232/RS422 (optional)/RS485 (optional) serial communication
interface, can communicate with computer.
1. Communication interface adopts 15-core RS232 socket (share with scoreboard), its
definition of foot is shown in Graph 2-5 (foot 6.7,8) RS232 or foot 1, 2, 3, 4, 8
(RS422/RS485)
2. All data is of ASCII, every unit of data consist of 10 bytes, first bit is start bit, 10
bit is stop bit, 8 bit in the middle is data bit, communication method divided as
follow:
(1) Continuous method (Tf=0):
The sending data is the current weight (G.W or N.W). each frame of data
consist of 12 unit of data. Format as follow:
th
X bit
1 02(XON)
2 + or -
3 Weighing data
：
Weighing data
：
Weighing data
8 Weighing data
9
Decimal No.
th
X bit
10 XOR checking
11 XOR checking
12 03(XOFF)
⊕ ⊕
XOR＝2 3 ......8 9
(2). Order method (tF=1):
X K 3 1 9 0 - A 9+
D4 — back up
⊕
9
Content and note
start
symbol bit
high bit
：
：
low bit
from right to left（0～4）
Content and note
4 bit in high bit
4 bit in low bit
end
th