DSC ELECTRONICS DP-D Gen2 Series User manual

DP-D Gen2 Series User’s Manual
Version 25.02.2021
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
DP-D Gen2 Series
High Power Laboratory Power Supplies
User’s Manual
by DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn

DP-D Gen2 Series User’s Manual
Version 25.02.2021
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
1. Connection
Our devices are pre-configured to the power grid chosen with order (if not specified otherwise, our devices are
manufactured for the EU power grid 230V 50Hz / 400V 50Hz). Subsequent adjustment after delivery is not possible.
Connecting the device to an unsuitable power source will void any warranty.
Note: Devices of the DP-D series in the performance class 4.000W - 9.000W can cause a high starting current when
switched on. Therefore, the use of circuit breakers of classes C, D or K is recommended.
1 Phase / EU Power Grid
Voltage (Recommended)
230V ± 10% AC
Voltage (Max.)
250V AC
Frequency
50Hz - 60Hz
Circuit breaker minimum requirements
The maximum current of the device shall be determined as
follows:
I = (maximum power of the device / 230) + 2
1 Phase / American Power Grid
Voltage (Recommended)
115V ± 10% AC
Voltage (Max.)
130V AC
Frequency
50Hz - 60Hz
Circuit breaker minimum requirements
The maximum current of the device shall be determined as
follows:
I = (maximum power of the device / 115) + 4
3 Phase / EU Power Grid (TN-S Network)
Voltage (Recommended)
380V - 410V
Voltage (Max.)
430V
Frequency
50Hz
Circuit breaker Minimum requirements
The maximum phase current of the device shall be
determined as follows:
I = ((maximum power of the device / 400) / 1,73) + 2

DP-D Gen2 Series User’s Manual
Version 25.02.2021
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
2. General
Please read through and understand this Operation Manual before operating the product. After reading always keep
the manual nearby so that you may refer to it as needed. When moving the product to another location, be sure to
bring the manual as well.
Calibration
Before shipment, the instrument has been calibrated carefully in our factory. The calibration procedures and
standards are compliant to the national regulations and standards for electronic calibration. If you have requested a
certificate with your order, this is enclosed with your device. With ordered off-site calibration (DaKKS) the calibration
was not performed in-house, please refer to the laboratory calibration protocol for details.
Warranty
We guarantee that the instrument has undergone a strict quality test before shipment and has passed all prescribed
functional tests. We provide our customers with a warranty period of three years from receipt of the device. During the
warranty period, all repairs, as well as spare parts are always free of charge. The warranty is void in the case of
defects which have been caused by user's fault, or in case of unauthorized opening.
2.1 Safety instructions
This chapter contains important safety instructions that you must follow when operating the instrument and when
keeping it in storage. Read the following before any operation to insure your safety and to keep the device in a proper
condition.
Safety symbols
The following safety symbols may appear in this manual or on the instrument:
WARNING
Identifies conditions or practices that could result in injury or
loss of life.
CAUTION
Identifies conditions or practices that could result in damage to
the instrument or to other properties.
DANGER
High Voltage
ATTENTION
Refer to the Manual
Protective Earth (PE)
Earth (Ground)
2.2 Safety guidelines
Please follow the safety guidelines when using and putting the device into operation in order to prevent safety risks
and to ensure the correct operation of the product.
Before connecting the device to the local power supply, make sure that the device is switched off.
Check if the product is compatible with the local power supply before connecting it.
Be careful on the correct earthing of the device (PE connection)
Do not use the product in humid environments
Do not touch the output terminals of the product with unprotected hands while it is switched on.
Do not use the device in extremely dusty rooms
Do not use the device outside the parameters specified in the data sheet

DP-D Gen2 Series User’s Manual
Version 25.02.2021
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
2.3 Unpacking and examination
Our products are delivered carefully packed in cardboard boxes or in wooden crates, depending on place of
destination and the type of the device (dimensions, weight). We pay attention to the environmental compatibility of the
upholstery and packaging materials used and ask you to dispose the filling material correctly if present.
Please unpack the device and check the packaging as well as the product for transport damage. Should you notice
any damage to the packaging or the device, we ask you to log it with photos and inform us immediately.
ATTENTION: If the device has been delivered in a wooden box, please do not dispose it as it can be used for eventual
return transport for service procedures. Also the packaging material of smaller devices can be stored in order to be
used if necessary for a return transport.
3. Product description
The DP-D Gen2 power supply can operate in constant voltage (CV) or constant current (CC) mode within the rated
output range. This allows continuous switching between the modes in response to the load change.
In CV mode, a regulated output voltage is provided. The output voltage remains constant as the load increases while
the output current changes in response to the load changes, until the preset current limit is reached. At that point, the
output current becomes constant and the output voltage drops in proportion to the further increases in load. The
current mode is indicated on the front panel display in area 12.
Similarly in CC mode switching from CC to CV mode automatically occurs from a decrease of the load. A regulated
output current is provided. The output current remains constant as the load decreases while the output voltage
changes in response to the load changes.
3.1 Capacitive load
Note: Can be ignored for devices with optional capacitive reverse current protection.
In the basic version, power supplies of the DP-D Gen2 series are not protected against reverse currents, which can
lead to a reverse current from the capacitive load after switching off the output voltage of the power supply. Never
connect pre-charged capacities to the power supply unit unless you have connected a serial protection diode between
the load and the power supply. The protection diode is always recommended for operation with large capacities,
please pay attention to a correct dimensioning.
3.2 Pulse load
Even if the peak current of the load is within the output power of the power supply, a high pulse load can cause
voltage fluctuations. To compensate these voltage fluctuations, expand your circuit by a serial induction. For low
currents, you can add a capacity in parallel for an even better result ( 1000uF / 1A).

DP-D Gen2 Series User’s Manual
Version 25.02.2021
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
3.3 Inductive load
Note: Can be ignored for devices with optional inductive reverse current protection.
If the power supply is used with large inductive loads, voltage spikes with an amplitude of up to 5 times the output
voltage can occur, this may damage the power supply or lead to unstable operation. To protect the power supply from
damage, a freewheeling diode has to be used in parallel with the load.
3.4 Switches
If a mechanic switch is used to connect or disconnect the power supply from the load, electric discharge can occur
during switching on currents over 100A. This may cause unstable output. To prevent this behaviour, connect a RC
circuit to the switch contact point.
4. Front panel description
4.1 DP-D Gen2 front and rear panel
No.
Name
Description
1
Current knob
Adjustment of the current limit value.
2
Voltage knob
Adjustment of the voltage limit value.
3
SET button
Switching between SETUP and DISPLAY modes.
4
OUTPUT button
Enabling the output.
5
Voltmeter
Displaying the real output voltage.
6
Ammeter
Displaying the real output current.
7
Power / Resistance meter
Displaying the real output power and resistance of the load.
8
Set Voltage display
Displaying the set voltage value.
9
Set Current display
Displaying the set current value.
10
Over voltage setting
Displaying the set over voltage setting.
11
Over current setting
Displaying the set over current value.
12
Status display
Displaying the status of the power supply.
CC
Constant current operation mode.
CV
Constant voltage operation mode.
OV
Over voltage protection triggered.
OT
Over temperature protection triggered.
OC
Over current protection triggered.
OUT
Output enabled.
LOCK
Panel locked.
13
Power switch
Powering on the power supply.

DP-D Gen2 Series User’s Manual
Version 25.02.2021
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
No.
Name
Description
1
RS-232 Interface
Standard interface.
2
RS-485 Interface
Standard interface.
3
RS-485-Interface
Standard interface.
4
Analog control switch
Enable / Disable external analog control (Optional).
5
Output terminals
Positive and negative output terminals.
6
AC input terminals
AC mains connection.
4.2 DP-G Gen2 front and rear panel with option [Y]
No.
Name
Description
1
Power switch
Power supply power ON/OFF.
2
Screen ON/OFF key
Press to enable or disable the front sceen. While the front screen is turned off, no
inputs over the front panel are possible (locked), remote control remains active.
3
Menu button
Press to enter system settings menu. Short press is again to select a sub-menu.
4
Tab key
Cycle through tabs in the menu section.
5
Lock key
Press to lock front panel and remote control to the currently set state. Inputs either
through the front panel, or remote control, will be discarded.
6
Store button
Save a screen shot of the curent display to the attached USB Stick.
7
USB Host port
Can handle USB sticks with FAT-32/16 and Ex-FAT format.
8
← key
Backspace.
9
Output ON/OFF key
Press to turn ON/OFF the output of the power supply.
10
< > keys
Cursor keys. Press to move cursor to the left or right.
11
Rotary knob
Turn anti-clockwise to increase a value, or clockwise to decrease a value. After the
value is set, make a short press on the knob to save the setup and exit setup mode.
12
Numeric keypad
Input keys for numbers 1 to 9 and decimal point.
13
Function keys F1-F4
Press the key to select its corresponding parameter.
14
LCD display screen
-

DP-D Gen2 Series User’s Manual
Version 25.02.2021
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
No.
Name
Description
1
RS-232 Interface
Standard interface.
2
RS-485 Interface
Standard interface.
3
RS-485-Interface
Standard interface.
4
Analog control switch
Enable / Disable external analog control (Optional).
5
Output terminals
Positive and negative output terminals.
6
AC input terminals
AC mains connection.
5. Operation instructions for devices without option [Y]
The DP-D Gen2 power supply can be optionally equipped with external analog control and feedback connections,
which allow to regulate and measure the set and real output values of the power supply externally. At the same time,
either external analog control or digital and the front panel controls can be used, thus make sure to select your desired
control method with the switch 4 on the rear panel before operation.
Caution: Always check that the output is switched off and the capacitors are discharged before connecting the load to
the power supply.
5.1 SET Button operation
1. Turn on the power and check that the output is off.
2. Press the SET button to enter SETTING mode.
3. Now adjust the output voltage and current with the voltage and current knobs.
4. Press the SET button once again to select the over voltage and over current settings.
5. Now adjust the over voltage and over current protection values.
6. Press the SET button once again to save all settings.
7. Turn on the output by pressing the OUTPUT button.
5.2 CV Constant voltage operation
NOTE: Pressing the voltage or current knob shortly switches between coarse and fine tuning.
1. Turn on the power and check that the output is off.
2. Press the SET button and set the desired voltage and current limit according to point 5.2.
4. Turn on the output by pressing the OUTPUT button.
5. The CV indicator lights up.
6. The power supply is now operating in constant voltage mode (CV).
The output voltage remains stable while the current is adjusted automatically. If the current exceeds the maximum
limit set, the power supply switches to CC mode and reduces the voltage not to exceed the maximum current limit.

DP-D Gen2 Series User’s Manual
Version 25.02.2021
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
5.3 Constant current operation
NOTE: Pressing the voltage or current knob shortly switches between coarse and fine tuning.
1. Turn on the power and check that the output is off.
2. Press the SET button and set the desired voltage and current limit according to point 5.2.
4. Turn the output on by pressing the OUTPUT button.
5. The CC indicator lights up as soon as the output current reaches the current limit set.
The power supply now operates in constant current mode (CC). The output current remains stable while the voltage is
being adjusted automatically.
5.4 Locking the front panel
Press the current knob for 3 seconds to lock or unlock the front panel. The current and voltage knob as well as the
SET button are not operational when the front panel is locked.
6. Operation instructions for devices with option [Y]
The DP-D Gen2 power supply can be optionally equipped with external analog control and feedback connections,
which allow to regulate and measure the set and real output values of the power supply externally. At the same time,
either external analog control or digital and the front panel controls can be used, thus make sure to select your desired
control method with the switch 4 on the rear panel before operation.
Caution: Always check that the output is switched off and the capacitors are discharged before connecting the load to
the power supply.
6.1 Set voltage
Press [F1] key to enter voltage setup mode (V-Set), now the cursor appears on voltage value position. The voltage
value can be set up in two ways:
- Adjust voltage value by rotary knob
- Input voltage value through the keypad
Press < > keys to move the cursor to the position that you would like to adjust, this also works with the rotary knob.
When the voltage value is adjusted to the desired value, short press the rotary knob to store the value and exit setup
mode.
6.2 Set current
Press [F2] key to enter current setup mode (I-Set), now the cursor appears on current value position. Perform the
current setup the same way as described in the voltage setup section above.
6.3 Set OVP
Press [F3] key to enter over voltage protection (OVP) limit setup mode (V-Limit). The cursor appears on voltage limit
value position. Perform the current setup the same way as described in the voltage setup section above.
6.4 Set OCP
Press [F4] key to enter over current protection (OCP) limit setup mode (I-Limit). The cursor appears on current limit
value position. Perform the current setup the same way as described in the voltage setup section above.
6.5 Set output On/Off
After power on, the power supply output status is defaulted to OFF. Output has to be turned on by pressing the on/off
key. Short press the [ON] key to turn on the output. The “ON” icon appears on the lower left corner of the LCD screen
when output is turned on. Short press the [ON] key again to turn off output. The “Off” icon appears on the lower left
corner of the LCD screen when the output is off.

DP-D Gen2 Series User’s Manual
Version 25.02.2021
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
6.6 Panel lock
The panel lock function is designed to avoid inputs by mistake.
Short press [Lock] key to lock operations of front panel keys and knobs. The “Lock” icon appears the lower left corner
of the LCD screen when the front panel is locked. Inputs of all keys and knobs are invalid, except operation of the [ON]
key. If output is on during panel lock, the [ON] key can be pressed to turn off the output. However, output cannot be
turned on again by pressing the [ON] key while the panel is locked. The front panel can be unlocked by pressing the
[Lock] key again.
6.7 System setup
Press the [Menu] button for two times to select “System Setup” mode.
6.7.1 Set output mode
There are four output modes to be chosen from. Press the [Tab] button to select the “MODE” menu. Use the rotary
knob to select an output mode from the “Mode Select” setting.
Normal mode: In this mode, output voltage and current is set up by manual configuration on front panel or through
external interfaces.
Cycle mode: In this mode, maximum 999999 steps can be set into one automatic running cycle. Output voltage,
current and time can be set up in each step.
V Slope mode: In this mode, voltage rise/fall time can be adjusted.
I-Slope mode: In this mode, current rise/fall time can be adjusted.
Depending on the mode chosen, the sixth tab in the main menu gets replaced by the appropriate configuration utility
for the mode chosen.

DP-D Gen2 Series User’s Manual
Version 25.02.2021
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
6.7.2 Serial communication
Press the [Tab] button to select the “UART” menu. In this menu, parameters of baud rate, stop bit, parity bit and
communication ID can be adjusted. Press < > keys to move the cursor to select a parameter, and then use the rotary
knob to set the value. Communication ID defaults to 0.
6.7.3 LAN Communication
Press the [Tab] button to select the “LAN” menu. LAN communication settings include automatic IP address
allocation “DHCP” and fixed IP address settings “Fixed IP”, as well as subnet mask settings “NM” and default gateway
settings “GW”. Also the currently assigned IP address and communication protocol is displayed. The host port number
defaults to 502.

DP-D Gen2 Series User’s Manual
Version 25.02.2021
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
6.7.4 Date and time
Press the [Tab] button to select the “DATE & TIME” menu. Press the < > keys to move cursor to select a parameter,
and then use rotary knob to set the value.
6.7.5 Protection settings
Press the [Tab] button to select the “PROTECT” menu. The over voltage protection and over current protection
functions can be turned on and off depending on the settings here. Press the < > keys to move the cursor to select a
protection mode, and then use the rotary knob to switch between on and off.

DP-D Gen2 Series User’s Manual
Version 25.02.2021
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
6.7.6 Cycle mode settings
Press the [Tab] button to select the “CYCLE MODE” menu.
There are 4 cycle configuration options:
10 group * 100 item (100 steps in each group, in total 10 groups)
20 group * 50 item (50 steps in each group, in total 20 groups)
50 group * 20 item (20 steps in each group, in total 50 groups)
100 group * 10 item (10 steps in each group, in total 100 groups)
Press the < > keys to move the cursor and select a cycle configuration.
Press the < > keys or turn the rotary knob to move the cursor to the row entitled as “Group:, StartStep:, EndStep:”, the
cursor position is highlighted in blue as above.
Function keys F1-F4 now correspond to Group No. [Group], Start Step No. [StartStep], End Step No. [EndStep] and
[BackSpace] key respectively. Press F1-F4 keys to select a parameter. Input a new parameter via keypad or rotary
knob, and make a short press on the rotary knob to confirm input.

DP-D Gen2 Series User’s Manual
Version 25.02.2021
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
Press the < > keys or turn the rotary knob to move the cursor to the row entitled as “Cycle:, OVP:, OCP:”, the cursor
position is highlighted in blue as above.
Function keys F1-F4 now correspond to Cycle No. [Cycle], OVP value [OVP], OCP value [OCP] and [BackSpace] key
respectively. Press F1-F4 keys to select a parameter. Input a new parameter via keypad or rotary knob, and make a
short press on the rotary knob to confirm input.
Press the < > keys or turn the rotary knob to move the cursor to the first row of the table, the cursor position is
highlighted in blue as above.
Function keys F1-F4 now correspond to Step No. [Step], Voltage value [V (V)], Current value [I(A)], time value [Hr Min
Sec] and [BackSpace] key respectively. Press F1-F4 keys to select a parameter. Input a new parameter via keypad or
rotary knob, and make a short press on the rotary knob to confirm input.

DP-D Gen2 Series User’s Manual
Version 25.02.2021
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
6.7.7 V Slope mode
In voltage slope mode, the output voltage rise time or fall time can be adjusted. After setting up rise time or fall time,
the output voltage rises or falls gradually within the preset time. Otherwise, the output voltage rises or falls at the
maximum speed. The rise or fall time can be adjusted to max 99999 seconds.
Press the < > keys or turn the rotary knob to move the cursor to the row entitled as “Group:, StartStep:, EndStep:”, the
cursor position is highlighted in blue as above.
Function keys F1-F4 now correspond to Group No. [Group], Cycle No. [Cycle], Start Step No. [StartStep], End Step No.
[EndStep] and [BackSpace] key respectively. Press F1-F4 keys to select a parameter. Input a new parameter via
keypad or rotary knob, and make a short press on the rotary knob to confirm input.
Press the < > keys or turn the rotary knob to move the cursor to the row entitled as “Iset:, OVP:, OCP:”, the cursor
position is highlighted in blue as above.
Function keys F1-F4 now correspond to OVP value [OVP], OCP value [OCP] and [BackSpace] key respectively. Press
F1~F4 keys to select a parameter. Input a new parameter via keypad or rotary knob, and make a short press on the
rotary knob to confirm input.

DP-D Gen2 Series User’s Manual
Version 25.02.2021
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
Press the < > keys or turn the rotary knob to move the cursor to the first row of the table, the cursor position is
highlighted in blue as above.
Function keys F1-F4 now correspond to Step No. [Step], Voltage value [V(V)], Current value [I(A)], time value [Hr Min
Sec] and [BackSpace] key respectively. Press F1-F4 keys to select a parameter. Input a new parameter via keypad or
rotary knob, and make a short press on the rotary knob to confirm input.
6.7.8 Other settings
Beeper: Beeper alarm can be turn on and off.
Volume: Beeper volume can be set from low to high in 6 steps. Volume defaults to lowest range 1.
Startup Output on: The output defaults to off after startup, but can be set to on.
Backlight: The brightness of the LCD backlight can be set from low to high in 8 steps. Brightness defaults to the
lowest step 1.
Upgrade: Begin firmware upgrade from an external USB stick.
Keep only one (the latest) BIN file on the USB flash drive that is used for firmware upgrade. If there is more than a
single firmware file, the system cannot identify which file to use for this particular upgrade.
Plug in the USB flash drive with the .bin firmware file after startup and select “Upgrade” in the “OTHER” tab. To avoid
accidential firmware modifications, you will have to confirm the firmware upgrade by turning the rotary knob to
increase the counter to “5/5”. The power supply will start to read the BIN file and begin automatic upgrade. Please
under no circumstances power off the power supply during the upgrade.
Factory setting: Resets the power supply configuration to factory settings.

DP-D Gen2 Series User’s Manual
Version 25.02.2021
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
7. Optional features
7.1 Remote sensing
The power supply is optionally equipped with remote sensing terminals, which can read the voltage at the load and
therefore compensate losses. Refer to below figure on how to connect the load to remote sensing terminals. The
remote sensing input can be connected optionally, and is automatically deactivated if not connected.
WARNING: In case you physically disconnect the output leads from the load, also disconnect the remote sensing
leads at the same time.
7.2 External „Output ON/OFF“ Control & Interlock
Input for controlling the status of the output of the laboratory power supply (on / off), switchable as “Interlock” or
external control. This input is configured as a two pin connection, a „true“ state is triggered by shorting the two pins
and a „false“ state is triggered by removing any connection between the two pins of the input.
This option can be configured as either an interlock input, which disables the output of the power supply if the state is
false, or as an external output status control which enables or disables the output of the power supply depending on
the control signal state (true = on/false = off) if the „Output On/Off“ switch of the power supply is always in the ON
position.
8. Digital control
8.1 RS-232 Interface
Following the pin description of the RS-232 interface of the DP-D Gen2 Series.
Pin
Pin out definition
Function
1
NC
Blank
2
TXD
Send
3
RXD
Receive
4
NC
Blank
5
GND
Ground
6
NC
Blank
7
NC
Blank
8
NC
Blank
9
NC
Blank

DP-D Gen2 Series User’s Manual
Version 25.02.2021
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
8.2 RS-485 Interface
Following the pin description of the RS-485 interface of the DP-D Gen2 Series.
Space for your notes:
Pin
Pin out definition
Function
1
A (D+)
-
2
B (D-)
-
3
NC
-
4
NC
-
5
NC
-
6
NC
-
7
NC
-
8
NC
-

DP-D Gen2 Series User’s Manual
Version 25.02.2021
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
9. Communication Protocol for DSC-Electronics DP-D Gen2 Series power supplies
Interface: RS-232 / RS-485 (Profibus DB) / LAN (Only with option[Y])
Command format: Asynchronous, 1 start bit, 8 data bits, 1 stop bit
UART baud rate: 1200; 2400; 4800; (9600 default); 14400; 19200; 38400; 43000; 57600; 76800; 115200; 128000
Communicationmode: Master-Slave mode
Command Format
1st part: ID number of the DC power supply, 1-16 (If the ID number is 0, all devices will respond)
2nd part: Control command
3rd part: Data length (how many values are supplied to the device in this command)
Data part: 16-bit data, high bit in the front
CRC part: MODBUS format, low byte in the front
Feedback Command Format
1st part: ID number of the DC power supply, 1-16
2nd part: control command
3rd part: data length (how many values are supplied to the device in this command)
Data part: 16-bit data, high bit in the front
CRC check: MODBUS format, low byte in the front
The power supply automatically switches to remote operation mode as soon as contacted through one of the digital
interfaces. The below information is displayed while the device is in remote operation mode (not on devices with the
[Y] option).

DP-D Gen2 Series User’s Manual
Version 25.02.2021
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
9.1 Command Examples
9.1.1 Output ON/OFF
Control command:
ID
Function Code
Register Address
Data (On/Off)
CRC Check Code
01
05
0085
FF00
9DD3
01
05
0085
0000
DC23
Feedback: Equal to command.
9.1.2 Read Output Status
Control command:
ID
Function Code
Address of Start Register
Numbers of Registers
CRC Check Code
01
01
0085
0001
EC23
Feedback:
ID
Function Code
Address of First Register
Output Status (On/Off)
CRC Check Code
01
01
01
01
9048
01
01
01
00
5188
9.1.3 Read Output Voltage Value
Control command:
ID
Function Code
Address of First Register
Numbers of Registers
CRC Check Code
01
04
0064
0001
7015
Feedback:
ID
Function Code
Bytes
Output Voltage
CRC Check Code
01
04
02
0283
F9F1
Voltage: 0x0283 in decimal equals to 643.
643 divided by 10 (1 decimal point) is 64.3, thus a voltage value of 64.3V.
9.1.4 Read Output Voltage and Current Value
Control command:
ID
Function Code
Address of First Register
Numbers of Registers
CRC Check Code
01
04
0064
0002
7015
Feedback:
ID
Function Code
Bytes
Output Voltage
Output Current
CRC Check Code
01
04
02
0283
0001
CA14
Voltage: 0x0001 in decimal equals to 1.
1 divided by 100 is (2 decimal points) 0.01, thus a current value of 0.01A.
9.1.5 Read Output Power Value
Control command:
Register
Type
Function
Address
(Decimal)
Address (Hex)
Target
Function Code 04
(Read)
3
Read
Output power
(feedback value)
102
0x0066
Byte
√
This is an optional command and is not available in standard configurations.
Below commands are used to read output power value in standard configuration devices.
Register
Type
Function
Address
(Decimal)
Address (Hex)
Target
Function Code 04
(Read)
11
Read
Output power KW*1
110
0x006E
Byte
√
12
Read
Output power W*1
111
0x006F
Byte
√
13
Read
Output power
mW*1
112
0x0070
Byte
√

DP-D Gen2 Series User’s Manual
Version 25.02.2021
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
DSC-Electronics Germany • Georgstraße 36 • 53111 Bonn
Control command:
ID
Function Code
Address of First Register
Numbers of Registers
CRC Check Code
01
04
006E
0003
DID6
Feedback:
ID
Function Code
Bytes
KW
W
mW
CRC Check Code
01
04
06
0000
007F
02E8
F9F1
KW: 0x0000 = 0kW
W: 0x007F = 127W
Mw: 0x02E8 = 744mW
Output power: 0+127+0.744 = 127.744W
The power value is calculated from the voltage and current readback value, so the digits of the read power value may
be two decimal points longer than the digits displayed by the power supply.
9.1.6 Read Rated Voltage Value
Control command:
ID
Function Code
Address of First Register
Numbers of Registers
CRC Check Code
01
04
0067
0001
8015
Feedback:
ID
Function Code
Bytes
Output Voltage
CRC Check Code
01
04
02
03E8
B98E
Voltage: 0x03E8 into decimal system is 1000.
1000 divided by 10 is (1 decimal point) 100.0, thus the voltage value is 100.0V.
9.1.7 Set Output Voltage Value
Control command:
ID
Function Code
Register Address
Data
CRC Check Code
01
06
0095
01F4
99F1
Feedback:
ID
Function Code
Register Address
Data
CRC Check Code
01
06
0095
01F4
99F1
Set output voltage to 50V. There is 1 decimal point for voltage value (50.0).The value should be 500 in the decimal
system. 500 into hex is 0x01F4.
9.1.8 Set Output Voltage and Current Value
Control command:
ID
Function Code
Address of
First Register
Numbers of
Registers
Bytes
Voltage
Current
CRC Check Code
01
10
0095
0002
04
0190
01F4
3B3A
Feedback:
ID
Function Code
Address of First Register
Numbers of Registers
CRC Check Code
01
10
0095
0002
51E4
9.1.9 Set Cycle Mode
1) Change Operation Mode of the Power Supply
Control command:
ID
Function Code
Register Address
Data
CRC Check Code
01
06
00A0
0000 (Normal mode)
89E8
01
06
00A0
0001 (Cycle mode)
4828
Feedback: Equal to command.