HD-150/HD-300 RS-232 Interface protocol:
The RS232 interfa=
ce
of HD shipping scale has two work modes: SCI.1 (factory default setting) and
SCI.0 (to select the work mod=
e,
please refer the HD-150/HD-300 user manual ).
When the work mod=
e “SCI.1”
(Serial Communication Interface transmitting and receiving data format R=
20;1”)
is selected, The HD shipping scale can work with the UPS®=
Worldship® Program. HD’s data
transmitting or receiving format is the same as the Toledo=
®=
PS60=
.
When the work
mode “SCI.0” is
selected and scale’s “DATA” is pressed or the carriage re=
turn
(0d hex) is received, HD shipping scale will transmit
weight,unit,stability,over/down or low voltage message according to the
following protocol:
Baud rate : 9600bps
Start bit : 1 bit
Data bits : 8 bits
Stop bit &nb=
sp;
: 1 bit
Parity
: none
The scale transmits 14 bytes ASCⅡ
data each time:
(Byte1) (Byte2) (Byte3) (Byte4) (Byte5)……(By=
te8)
(Byte9) (Byte10) (Byte11) (Byte12) (Byte14)
the details are as follows:
Byte 1=3D “:” (colon), starting byte;
Byte 2=3D “W” means that the following 7 (By=
te3……Byte9)
bytes are weight;
=3D“=
M”
means that the following 7 (Byte3……Byte9) bytes are message (e.=
g. “OVER”);
Byte 3=3D “-” means Byte3…Byte9 is neg= ative weight
=3D “ ” me= ans Byte3…Byte9 is positive weight or other message
Byte 4.5.6.7.8.9 =3D xxxxxx means current weight or other mess=
age
Byte 10.11=3D“lb” means that the weight unit=
is
lb;
=
=3D “kg” means the weight unit is kg;
Byte 12=3D “S” means the readings are stable=
;
=3D&=
#8220; “
means the readings are unstable;
Byte 13=3D “L” means the low voltage;
=3D
“ ” means normal voltage;
Byte 14=3Dcarriage return (0d hex);
Examples:
1. =
When scale indicator is displaying R=
20;123.45kg”
, and the scale is stable , the power is not low voltage and data received =
is “0d
(hex)” or “DATA” key been pressed, the scale will send out
following 14 bytes :
(3Ah)(57h)(20h)(31h)(32h)(33h)(2Eh)(34h)(35h)(6Bh)(67h)(53h)(20h)(0Dh=
)
: W
1 2 3 . 4 5 k g S
2. =
When scale indicator is displaying R=
20;-234.5lb”
, scale is unstable , low voltage and received “0d (hex)” or &#=
8220;DATA”
key been pressed, the scale will send out following 14 bytes :
(3Ah)(57h)(2Dh)(32h)(33h) (34h) (2Eh) (35h)(30h)(6Ch)(62h)(20h)(4Ch)(=
0Dh)
: W - 2 3 4 . 5 0 l b L
3. =
When scale indicator is displaying R=
20;_____”
, current weight unit is “kg”, scale is stable , not low voltage
and received “0d (hex)” or “DATA” key been pressed,=
the
scale will send out following 14 bytes :
(3Ah)(4Dh)(20h)(64h)(6Fh)(77h)(6Eh)(20h)(20h)(6Bh)(67h)(53h)(20h)(0Dh=
)
: M
d o w n =
k g S
RS-232
connect between HD scale and Host :
Scale--------------------------Cabl=
e---------------------------Host
(DB9
female)--------(DB9 male)----(DB9 female)--------(DB9 male)
TXD
2----------------2---------------------------------2---------------2=
RXD
RXD 3---------------3-----------------=
-----------------3---------------3
TXD
GND
5---------------5----------------------------------5--------------5 =
GND
DSR
4---------------4----------------------------------4--------------4 =
DTR
DTR
6---------------6----------------------------------6---------------6=
DSR
CTS
7---------------7----------------------------------7---------------7=
RTS
RTS
8---------------8----------------------------------8---------------8=
CTS
NC
1---------------1----------------------------------1---------------1=
NC 9---------------9-----------=
-----------------------9---------------9
Note: HD scale DB9 female’s p=
in4
and pin6 is shorted, pin7 and pin8 is shorted!
Note that his gui=
de
is Copyright GKI Technologies. Unauthorized reprinting is prohibited.