User manual
X K 3 1 9 0C 602
in which the right RxD and TxD are RS-232 (2) interface while the TXD0, TXD1, XD0, and
RXD1 are RS422/485 interface. Only one of the two can be selected in operation. If terminating
resistance and pull-up resistance or pull-down resistance needs to be connected, open the housing,
draw out main panel, and short jumper JP3 in main panel. When 1-2 are shorted, the pull-down
resistance is valid, when the 3-4 are shorted, terminating resistance is valid, and when 5-6 are
shorted, the pull-up resistance is valid. If RS485 communication mode is used, please short TXD0
and RXD0, TXD1 and RXD1 terminals respectively. Parameter
SET 1
6B must select 2. At
this time, the communication interface is working in command response mode to prevent the
conflict of bus. The range of common-mode voltage of RS422/RS485 mode is 3±7V.
1. Continuous send mode
When SET 1 parameter 6B is set as 1, continuous send mode is active. See table 3-1 for
data format. All data are ASCII code, each byte is made up of ten bits, with the first bit as the
start bit and the tenth bit as the stop bit, the bits in between are data bits, no check bit is available.
The transmitted data are the current weight value (gross weight or net weight) measured by the
indicator, each frame has 9 bytes. See table 3-1 for format.
Table 3-1 Communication Format of Continuous Send Mode of Serial Interface (2)
Byte Content Explanation
1 G or N
G stands for gross weight while N f
or
net weight.
2
Start bit
3 Weighing data
Most significant bit, non-
significant
zero
is represented by space, the same
with the following
4 Weighing data Data or symbol
5 Weighing data Data or symbol
6 Weighing data Data or symbol
7 Weighing data
If there are three bits of decimal, this
byte is “.”.
8 Weighing data
If there are two bits of decimal, this
byte is “.”.
9 Weighing data
If there is one bit of decimal, this byte
is “.”.
10 Weighing data
Least significant
bit, it is a space if
there is no decimal.
11 0x0D Carriage return