DINGSONG DS822-A8KTF Technical manual

DS822-A8KTF(AX00)
Hangzhou dingsong automatic control equipment
co., ltd
Zhe 00000505
operation instruction
(Chinese version V1.1.2)
Multifunctional programmable weighing controller

Menu
I. Introduction................................................................................................................................ 1
II. Structural dimensions of main engine and accessories............................................................. 2
2.1 Installation Dimension Drawing of Host......................................................................... 2
2.2 Installation dimension drawing of display panel ............................................................. 2
III. Interface Layout of Host andAccessories ............................................................................... 3
3.1 Interface layout of instrument host.................................................................................. 3
3.2 Display panel function layout.......................................................................................... 4
IV. Connection method of instrument port .................................................................................... 5
4.1 Connection method of common switch input port........................................................... 5
4.2 Connection method of switch output port........................................................................ 6
4.3 Connection method of high-speed pulse input port......................................................... 7
4.4 Connection method of large screen display..................................................................... 7
4.5 Connection method of load cell....................................................................................... 7
4.6 Connection method of communication interface............................................................. 9
V. Parameter setting..................................................................................................................... 10
5.1 Function and operation of setting buttons on the display panel..................................... 10
5.2 Introduction of instrument parameters........................................................................... 12
5.3 Password control and permitted operation items........................................................... 12
5.4 Operation steps of password login................................................................................. 13
5.5 F parameter setting and lookup table............................................................................. 13
5.5 P parameter setting......................................................................................................... 17
VI. Weighing and calibration of instruments............................................................................... 18
6.1 Physical calibration........................................................................................................ 18
6.2 Calculation method calibration...................................................................................... 19
VII. Setting of other working parameters.................................................................................... 21
7.1 Parameter setting and protocol of full-function communication port............................ 21
7.2 High-speed pulse input port as large screen output port................................................ 22
7.3 High-speed pulse input port shall be a common input port. .......................................... 22
7.4 Modify the login password............................................................................................ 22
7.5 Settings of panel display content................................................................................... 23
7.6 Timed shutdown function .............................................................................................. 24
7.7 Input and output position adjustment............................................................................. 25
VIII. Instrument testing and other operations.............................................................................. 27
8.1 Instrument test function................................................................................................. 27
8.2 Instrument power-on self-test and fault display code.................................................... 28
8.3 The instrument weight is set to zero and the total accumulated quantity is cleared. ..... 29
8.4 Start and Exit of Process................................................................................................ 30
8.5 Restore factory settings.................................................................................................. 30
IX. Appendix ............................................................................................................................... 32
Appendix 1 Top Loose Communication Protocol................................................................ 32
Appendix 2 Command of Continuous Sending Mode......................................................... 40
Appendix 3 Modbus RTU communication function code table .......................................... 42

1
I. Introduction
DS822-A8KTF(AX00) is a dual-scale split programmable weighing controller,
which can be connected to two weighing sensors at the same time. The host is
installed by standard guide rail, which can be directly connected to the touch
screen as man-machine interface, or connected to the display panel produced by
our company. This controller has the characteristics of multifunction, high
precision, high reliability and user programmability.
Figure 1.1 Physical drawing of main engine and man-machine interface
accessories
Hardware resources and functions
(1) 10 common switch input points, which can receive the following signals:
Passive switch, button, relay output
Or NPN PNP transistor switch input
DC voltage signal, voltage range 6-24V
(2) One high-speed pulse input port, which can be connected with high-speed pulse
input and can also be used as a common switch input point.
(3) 18 relay outputs, contact capacity: AC220V,5A or DC30V,5A
(4) Two high-precision conversion AD channels can be connected to two load cells
at the same time, which can be used as double scales.
(5) Two communication interfaces
One is RS485 interface, which is fixed to the standard Modbus RTU protocol
with baud rate of 38400, and can be connected to the display panel produced
by our company or other brands of touch screens.
The other path can be connected with RS485/RS232 signals. Communication
mode, address and baud rate can be set. Top loose protocol, standard Modbus
RTU protocol and multiple continuous transmission modes can be selected. It
can communicate with computers, PLC and other equipment.
(6) 1 channel large screen output interface (multiplexed with high-speed pulse
input port, and only one function can be selected at the same time)
It can be connected to one or two large-screen monitors produced by our
company, and the transmission distance can reach more than 1000 meters.
(7) Flexible and reliable programmable function, suitable for a variety of
applications, users can make secondary programming, which can be finished
in simple and convenient way.
At the same time, it can realize the protection of users' intellectual
property rights.
main performance index
(1) A/D input signal range: -20mV~+20mV (the sensitivity of the sensor
can reach up to 4mV/V)

2
(2) Internal resolution of A/D: 1/1 million
(3) A/D conversion speed: 100 times per second
(4) A/D nonlinearity: <0.003％FS
(5) Gain drift: 2PPM/℃(TYP)
(6) Sensor power supply for bridge: DC5V (current > 200mA, up to 12 350Ω
sensors can be connected)
(7) Power supply: Wide voltage AC100-240V,50-60Hz
(8) Service temperature: -10℃～40℃
(9) Relative humidity: <90％
(10) Overall dimension of main engine: 176 ×85 ×71
(11) Dimension of display panel: 160 ×85 ×30
II. Structural dimensions of main engine and accessories
2.1 Installation Dimension Drawing of Host
Figure 2.1 installation dimension of main engine
2.2 Installation dimension drawing of display panel
Figure 2.2 installation dimension of display panel
2.3 installation dimension drawing of touch screen (7 inches)

3
Figure 2.3 installation dimension of touch screen
III. Interface Layout of Host and Accessories
3.1 Interface layout of instrument host
The terminals of the instrument host are distributed on the AB side of the upper
and lower sides. The a side is the display and switch input interface, while the
B side is distributed with other interfaces, such as switch output port, power
input port, high-speed pulse input port, weighing sensor interface, full function
communication port, etc.
3.1.1 a side of instrument host panel
Fig. 3.1 function diagram of a side of host panel
3.1.2 B side of instrument host panel
Relay output port (totally 5 groups of 18 channels, C1-C5
indicates the common end of this group)
Panel/touch screen
communication
interface
Ordinary
switching value
input port
4-core communication
interface to the right
The DISP function is the
same

4
Figure 3.2 function diagram of B side of host panel
3.2 Display panel function layout
The host can be connected to the display panel produced by our company as the
man-machine interface. The display panel is double row LED display with 6
independent setting keys.There are two stability indicators, two rows of input
and output indicators.
Front display panel (2.1)
Figure 3.3 function diagram of display panel (front)
3.2.2 display panel (back)
Set key
Lower row
display
Six nixie
tubes
administer
Upper row display
Eight nixie tubes
Weighing
indicator light
Output
indicator lamp
Power input
port
AC85～265V
High speed
pulse
input port
Input port of
1# load cell
Input port of
2# load cell
Full
function
communic
ation
interface
Input port
indicator light

5
Figure 3.4 function diagram of display panel (back)
Note: the functions of the three display communication ports are completely
equivalent. A communication line is provided with the factory, and the two ends
can be connected to the display 3 interface of the display panel and the left side
of the disp interface of the host computer, without the user's wiring.The user
can also choose the appropriate interface.
IV. Connection method of instrument port
4.1 Connection method of common switch input port
in
pu
t
Optocoup
ler
isolatio
n switch
value
The instrument has 10 channels of common switch input (in1-in10).
The common terminal com is not connected to any electrical node
in the instrument, and the power supply positive (+ V) and power
negative (- V) are led out internally. According to different
needs, the common terminal can be connected to + V or - V or
not.Each input port can be connected with button, trigger switch,
relay contact point, proximity switch, etc,DC voltage signal
(6-24 V) can also be input. See the figure below for specific
common connection method
Figure 4.1 schematic diagram of switch input connection
Note: The common point COM in the figure can also be connected with+V. At this
time, one end of the button should be connected with-V. You can choose different
connection methods according to your needs.
Micro printer
interface
Communication
port 1
External power
input port
Communic
ation port
2
Communic
ation port
3

6
Figure 4.2 Schematic diagram of PNP proximity switch connection Figure 4.3
Schematic diagram of NPN proximity switch connection
Figure 4.4 Schematic diagram of DC voltage signal input connection
4.2 Connection method of switch output port
ou
tp
ut
relay
A total of 18 outputs (1-18), contact capacity: AC220V/DC30V,5A.
It can be directly connected to low-power resistive loads and
low-power AC/DC inductive loads (such as AC contactor and DC
contactor). See the following figure for the wiring method. If
the load power is large, please relay in series to prevent the
instrument from being damaged.
Figure 4.5 Schematic diagram of relay output connection
4.3 Connection method of high-speed pulse input port
in
pu
High
speed
This instrument has a high-speed pulse input port (SPEED), which
is electrically isolated by a high-speed optocoupler. This port

7
t
pulse
can be connected with an external speed sensor. It can also be
used as a common switch input port. See Section 7.2 for details.
Figure 4.6 Schematic diagram of connection of high-speed pulse input port
4.4 Connection method of large screen display
ou
tp
ut
Communic
ation
current
loop
This instrument can be connected to one or two large-screen
displays. It should be noted that this interface is multiplexed
with the high-speed pulse input port (SPEED), and only one
function can be selected at the same time. The factory defaults
to high-speed pulse input. If you want to use this function, you
must first set the parameter F32. See Section 7.2 for details.
Figure 4.7 Schematic diagram of connection of large screen display
Note: Two large screens can also be connected in parallel, for example, the two
input lines of two large screens can be connected in parallel in the left figure.
4.5 Connection method of load cell
in
pu
t
weighing
cell
This instrument has two high-precision AD channels, which can be
connected to two weighing sensors at the same time and used as
a double scale. The output arch bridge voltage of the instrument
is DC5V, the excitation current is > 200mA, and it can be connected
to at most 12 350Ωweighing sensors, with the signal input range
of -20mV~+20mV, and the sensitivity of the connected sensors can
reach up to 4 mV/V. 6-wire connection or 4-wire connection is
optional. See the following table for the meaning of sensor
interface.
4.5.1 Label and function of load cell interface

8
serial
number
1# sensor
grade
2# sensor
grade
Corresponding function
1
+E1
+E2
Positive excitation voltage (positive
supply bridge)
2
+F1
+F2
Feedback voltage positive (4-wire
connection method and arch bridge
positive short circuit)
3
-S1
-S2
Output signal negative
4
+S1
+S2
Output signal positive
5
-F1
-F2
Negative feedback voltage (4-wire
connection method and negative short
circuit of arch bridge)
6
-E1
-E2
Negative excitation voltage (negative
supply bridge)
7
SHD
SHD
Shielding end
Table 4.1 Label and function of load cell interface
4.5.2 6-wire connection method of load cell
In order to increase the stability of the weighing signal at a long distance,
the instrument and the sensor can be connected with a 6-wire system (long-line
compensation mode), and the sensor should adopt a 6-core shielded wire, and it
should be wired separately from the lines with strong interference (power equipment
wiring, etc.) and AC lines. (see figure 4.8 below)
4.5.3 Four-wire connection method of load cell
If the distance is close, 4-wire connection method can be adopted. At this
time, "E+" and "F+", "E-" and "F-" must be shorted on the interface terminals of
the host sensor respectively. If it is not short-circuited, the instrument will
not work normally, even sometimes it seems to work normally on the surface, but
it will actually produce a big error, so it must be connected strictly according
to Figure 4.9.
Figure 4.8 6-wire connection method of load cell Figure 4.9 4-wire connection