Matsusada Precision DOKF Series User manual

Instruction Manual
MODEL DOKF series
Communication Interface
Rev. 0.6

Note
All rights reserved.
No part of this publication may be reproduced, stored in a retrieval system, or
transmitted, in any form, or by any means, mechanical, electronic, photocopying,
recording, or otherwise, without the prior written permission of Matsusada Precision.

No patent liability is assumed with respect to the use of the information contained herein.
Moreover, because Matsusada Precision is constantly striving to improve its high-quality
products, the information contained in this manual is subject to change without notice.
Every precaution has been taken in the preparation of this manual. Nevertheless,
Matsusada Precision assumes no responsibility for errors or omissions.
Neither is any liability assumed for damages resulting from the use of the information
contained in this publication.
Trademarks
Company names and product names in this document are the trademarks or registered
trademarks of their respective companies.
Warranty
◆For details, refer to the following website.
https://www.matsusada.com/support/manufacturer_warranty.html

i
DOKF series
Table of Contents
Feature and Specification ···································································································1
1
Feature·························································································································11-1 General ························································································································11-2 External Appearance·······································································································11-3
Main Unit Setting···············································································································22
Operation Setting············································································································22-1 Display of Remote Control via Communication ·····································································32-2 Default Value for Remote Control·······················································································42-3 RS-232C Connector Pin Assignment and Communication Specifications···································52-4 GPIB Connector and Communication Specifications······························································52-5
Checking Operation···········································································································63
Checking USB Operation (DC Voltage Output with Original Command of Matsusada Precision)·6
3-1 Checking Operation of RS-232C (DC Voltage Output with Original Command of Matsusada3-2 Precision)·····················································································································7
Checking Operation of GPIB (DC Voltage Output with Original Command of Matsusada3-3 Precision)·····················································································································8
Program··························································································································94
Command Syntax···········································································································94-1 REN, GTL Commands and Unit Setting···············································································94-2 Character set of Command·····························································································104-3 Original Command of Matsusada Precision········································································ 114-4 Parameter Range Used for Command ··············································································154-5 Original Command Reference·························································································164-6 SCPI Command ···········································································································384-7 SCPI Command Setting·································································································394-8 SCPI Command List······································································································404-9 SCPI Command Reference···························································································484-10 Normal Operation·····································································································484-10-1 Sequence Program Operation·····················································································594-10-2

ii
DOKF series

1 Feature and Specification
1
DOKF series
Feature1-1This product has a feature of digital control via communication system of USB, RS-232C, and GPIB
communications.
Additionally, both Matsusada original command and SCPI commands are supported (except for GPIB
communication).
General1-2After unpacking, make sure all the following accessories are included with the main unit.
[Accessories]
□
Instruction Manual (this)
External Appearance1-3Connectors for USB, RS-232C, and GPIB communication are located on the rear panel.
Feature and Specification
1
Connector for RS-232C
(D-Sub 9-pin Male)
USB connector
(Type B)
GPIB connector
Enlarged view

2 Main Unit setting
2
DOKF series
Operation Setting2-1
The product has three communication interfaces: USB, RS-232C, and GPIB communications.
As multiple communications are not allowed to be simultaneously connected, the types of communications and
other settings must be configured.
Note
For details about the main unit setting, refer to DOKF series Instruction Manual [3-14 Communication Settings].
1. USB communication
This product uses a USB serial converter made by FTDI, and the baud rate setting is required.
The baud rate is selected from 9600 bps, 19200 bps, 38400 bps.
The factory default setting is 9600 bps. The setting is also common to RS-232C.
It corresponds to Matsusada Original Command as well as SCPI command.
The USB delimiter is CR (fixed).
2. RS-232C communication
The baud rate setting is required.
The baud rate is selected from 9600 bps, 19200 bps, 38400 bps.
It corresponds to Matsusada Original Command as well as SCPI command.
The RS-232C delimiter is CR (fixed).
3. GPIB communication
The GPIB address and terminator (delimiter) settings are required.
For setting, the GPIB address is selected from 0 to 30, and the terminator is selected from EOI/LF/CR..
It corresponds to Matsusada Original Command.
After the communication setting, be sure to turn off the power of the product and then, turn it on again to
restart. Changing the setting will be available after restarting it.
If you change the communication setting, be sure to turn off the power of the
product and then, turn it on again to restart. If not, the communication system may
not work properly.
Concerning the three communication interfaces of USB, RS-232C, and GPIB, be
sure to unplug unused communication cables. Otherwise, it could result in
malfunction.
Main Unit Setting
2

2 Main Unit Setting
3
DOKF series
Display of Remote Control via Communication2-2
With the product remote controlled, the LCD present status <LOC> is changed to <REN>.
To change from local control to remote control (on the front panel), issue the “REN” command.
In the meantime, as it is changed from local control to remote control, all the setting values will be
initialized. (CV mode, voltage 0 V, Frequency 1 kHz, etc.)
The remote control setting values are not stored in memory.
However, when the unit is returned to the local control from the remote control, the setting values stored
in memory will be recalled.
<LOC> indicates local controlled.
<REN> indicates remote controlled.

2 Main Unit Setting
4
DOKF series
Default Value for Remote Control2-3 As it is changed from local control to remote control with communication, all the settings are reset
to the default value. When changing, the setting values in local control which are stored in
memory will not be used in remote control. In remote control via communication, transfer the
commands to configure settings.
The local control settings are saved in memory, but the remote control settings are not saved.
Table; Default value for remote control
Setting
default value
CV/CC mode
CV
ACDC/DC mode
ACDC
DCV/DCI
0V/0A
ACV/ACI
0V/0A
Frequency
1kHz
Waveform
Sine
Zero-cross setting
ON
Display in measurement
Line 1: Vdc, Line 2: Vrms
Line 3: Idc, Line 4: Irms
Response setting
Mid 1
Sense setting
OFF
External Vcon setting
OFF
Synchronous trigger setting
OFF
Synchronous clock setting
DEN

2 Main Unit Setting
5
DOKF series
RS-232C Connector Pin Assignment and Communication Specifications2-4
[Connector]
DELC-J9PAF-20L9E manufactured by Japan Aviation Electronics Industry, Ltd.
[Pin assignment]
*Internally shorted between PIN 4 and PIN 6 as well as PIN 7 and PIN 8 in DOKF.
[Communication Specifications]
GPIB Connector and Communication Specifications2-5
[Connector]
24-pin, receptacle
[Communication Specifications]
No.
Signal
Description
No.
Signal
Description
1
NC
(No connect)
6
(DSR)
(data set ready)
2
TXD
Transmitted data
7
(RTS)
(Request to send)
3
RXD
Received data
8
(CTS)
(Clear to send)
4
(DTR)
(Data terminal ready)
9
NC
(No connect)
5
GND
Signal ground
Item
Specification
Remark
Communication method
Full-duplex
Synchronization method
Asynchronous
Transmission code
ASCII
Communication speed
9600/19200/38400 bps
Set on the front panel
Parity check
None
Stop bit length
1 bit
Data length
8 bits
Flow control
None
Data delimiter
CR
For sending and receiving
Item
Specification
Remark
Message terminator
EOI/LF/CR
Set on the front panel
Primary address
0 to 30
Set on the front panel

3 Checking Operation
6
DOKF series
Checking USB Operation (DC Voltage Output with Original Command of3-1 Matsusada Precision)
This section describes how to check the operation of the product using USB communication after the main
unit settings are completed.
The baud rate setting of USB is required.
Voltage is actually output in checking operation.
Do not connect any load to the product before the following procedure is
completed.
(1) Connect USB cable
Connect the USB cable to a controller (e.g. computer) and the USB connector of the product.
(2) Turn on the power
Turn on the Power ON/OFF switch. (Wait a few seconds for the product startup to complete, or wait until you
get a response from the STS command.)
(3) Enable remote control
Send a command of “REN” from the controller (computer). Then, <REN> will appear on display, and the unit
goes into remote control state.
(4) Output 0 V in CV mode
Send “CV” and “SW1” from the controller (computer).
Then, the voltage 0V is output in CV mode, and “OUTPUT LED” is lit.
(5) Set voltage to output
Send “DCVSET xxxx” from the controller (computer). Enter the value in xxxx within the parameter range. The
DC voltage value set in xxxx will be output.
(6) Stop the output
Send a command of “SW0” from the controller(computer). OUTPUT LED will turn off.
(7) Enable local control
Send a command of “GTL” from the controller (computer). <LOC> appears on display, and the unit goes
into local control state.
(8) Ending the operation
Turn off the POWER ON/OFF switch of the main unit.
Checking Operation
3

3 Checking Operation
7
DOKF series
Checking Operation of RS-232C (DC Voltage Output with Original Command of3-2 Matsusada Precision)
This section describes how to check the operation of the product using RS-232C communication after the
main unit settings are completed.
For RS-232C, settings of the baud rate is required.
Voltage is actually output in checking operation.
Do not connect any load to the product before the following procedure is
completed.
(1) Connect RS-232C
Connect the RS-232C cable to a controller (e.g. computer) and the RS-232C connector of the product.
(2) Turn on the power
Turn on the Power ON/OFF switch. (Wait a few seconds for the product startup to complete, or wait until you
get a response from the STS command.)
(3) Enable remote control
Send a command of “REN” from the controller (computer). Then, <REN> will appear on display, and the unit
goes into remote control state.
(4) Output 0 V in CV mode
Send “CV” and “SW1” from the controller (computer).
Then, the voltage 0V is output in CV mode, and “OUTPUT LED” is lit.
(5) Set voltage to output
Send “DCVSET xxxx” from the controller (computer). Enter the value in xxxx within the parameter range. The
DC voltage value set in xxxx will be output.
(6) Stop the output
Send a command of “SW0” from the controller(computer). OUTPUT LED will turn off.
(7) Enable local control
Send a command of “GTL” from the controller (computer). <LOC> appears on display, and the unit goes into
local control state.
(8) Ending the operation
Turn off the POWER ON/OFF switch of the main unit.

3 Checking Operation
8
DOKF series
Checking Operation of GPIB (DC Voltage Output with Original Command of3-3 Matsusada Precision)
This section describes how to check the operation of the product using GPIB communication after the
main unit settings are completed.
For GPIB, settings of the GPIB address and terminator (delimiter) are required.
Voltage is actually output in checking operation.
Do not connect any load to the product before the following procedure is
completed.
(1) Connect GPIB
Connect the GPIB cable to a controller (e.g. computer) and the GPIB connector of the product.
(2) Turn on the power
Turn on the Power ON/OFF switch. (Wait a few seconds for the product startup to complete, or wait until
you get a response from the STS command.)
(3) Enable remote control
Send a command of “REN” from the controller (computer). Then, <REN> will appear on display, and the
unit goes into remote control state.
(4) Output 0 V in CV mode
Send “CV” and “SW1” from the controller (computer).
Then, the voltage 0V is output in CV mode, and “OUTPUT LED” is lit.
(5) Set voltage to output
Send “DCVSET xxxx” from the controller (computer). Enter the value in xxxx within the parameter range.
The DC voltage value set in xxxx will be output.
(6) Stop the output
Send a command of “SW0” from the controller (computer). OUTPUT LED will turn off.
(7) Enable local control
Send a command of “GTL” from the controller (computer). <LOC> appears on display, and the unit goes
into local control state.
(8) Ending the operation
Turn off the POWER ON/OFF switch of the main unit.

4 Program
9
DOKF series
Command Syntax4-1
Setting the output voltage of the unit to rated maximum voltage is as follows.
Example: Model at rated voltage 60V
In optical communication, use a space between the command and parameter.
(Communication is possible without a space.)
(1) Input delimiter CR (0DH) for USB and RS-232C, or input EOI/LF/CR for GPIB.
(2) Some commands require a parameter. The parameter values vary depending on the models. (Refer to
“List: Minimum value settings / Return values”.)
(3) Wrong commands are to be ignored.
REN, GTL Commands and Unit Setting4-2There are different settings of Remote control and Local control.
When the product receives “REN” command changing Local control to Remote control, the settings are all
the default value of Remote control (See the list below).And they are not saved in memory.
List: Default value at Remote control
Item
Default value (state)
Original Command of
Matsusada Precision
Operation status
Output OFF
OUT、SW
CV mode
CV/CC
Output setting value
Voltage 0V (CV mode)
ACVSET
DCVSET
Current 0A (CC mode)
ACISET
DCISET
AC wave setting
Sine
1kHz
WAVE
FRQ
Protection setting
Cutoff protection
Voltage 110% of the rated value
PROTSET
VULIM, VLLIM,
OVPSET
Current 110% of the rated value
IULIM, ILLIM,
OCPSET
Power -200W
OPPSET
Measurement setting
Measurement 1: Vdc
Measurement 2: Vrms
Measurement 3: Idc
Measurement 4: Irms
MSR1
MSR2
MSR3
MSR4
Program
4
(1) Delimiter
(2) Parameter
(3) Command
DCVSET 60.0 ○○

4 Program (Original Command of Matsusada Precision)
10
DOKF series
Note that it takes about 5 seconds to receive a command because of the initialization
process from the power on. Send the REN command after confirming the startup or the
response from the unit with STS command.
When the product receives GTL command changing Remote control to Local control, the settings are all the
default value of Local control. Each set value of Local control is stored in memory with the previous Local
control state.
Character set of Command4-3Do not use the characters(codes) of section in the followingASCII code table.
Use the LF (0AH) and CR (0DH) only for delimiter.
Command string is not case sensitive.
Use space (20H) to punctuate command and parameter in the command strings.
Table. ASCII code
0H
1H
2H
3H
4H
5H
6H
7H
0H
NUL
DLE
SP
0
@
P
`
p
1H
SOH
DC1
!
1
A
Q
a
q
2H
STX
DC2
”
2
B
R
b
r
3H
ETX
DC3
#
3
C
S
c
s
4H
EOT
DC4
$
4
D
T
d
t
5H
ENQ
NAK
%
5
E
U
e
u
6H
ACK
SYN
&
6
F
V
f
v
7H
BEL
ETB
‘
7
G
W
g
w
8H
BS
CAN
(
8
H
X
h
x
9H
HT
EM
)
9
I
Y
i
y
AH
LF
SUB
*
:
J
Z
j
z
BH
VT
ESC
+
;
K
[
k
{
CH
FF
FS
,
<
L
¥
l
|
DH
CR
GS
-
=
M
]
m
}
EH
SO
RS
.
>
N
^
n
to
FH
SI
US
/
?
O
_
o
Lower

4 Program (Original Command of Matsusada Precision)
11
DOKF series
Original Command of Matsusada Precision4-4 Original Command of Matsusada Precision 1 (Output setting)
Mode
Command
Parameter
Function
Setting
Output
ACVSET
Numerical
value
(3 digits)
0 to rated voltage x 105%
Sets the AC output voltage.
(CV mode)
ACISET
Numerical
value
(3 digits)
0 to rated current x 105%
Sets the AC output current.
(CC mode)
DCVSET
Numerical
value
(5 digits)
-rated voltage x 105%
to +rated voltage x 105%
Sets the DC output voltage.
(CV mode)
DCISET
Numerical
value
(5 digits)
-rated current x 105%
to +rated current x 105%
Sets the DC output current.
(CC mode)
PROTSET
Character
string
LIM/CUT
Sets the limit/cutoff protection.
VULIM
Numerical
value
(3 digits)
0.1 to rated voltage x 110%
Sets the voltage limit protection
for the positive side.
(Protection setting is Limit.)
VLLIM
Numerical
value
(3 digits)
-0.1 to -rated voltage x 110%
Sets the voltage limit protection
for the negative side.
(Protection setting is Limit.)
IULIM
Numerical
value
(3 digits)
0.1 to rated current x 110%
Sets the current limit protection
for the positive side.
(Protection setting is Limit.)
ILLIM
Numerical
value
(3 digits)
-0.1 to -rated current x 110%
Sets the overcurrent protection
for the negative side.
(Protection setting is Limit.)
OVPSET
Numerical
value
(3 digits)
0.1 to rated voltage x 110%
Sets the overvoltage protection.
(Protection setting is cutoff.)
OCPSET
Numerical
value
(3 digits)
0.1 to rated current x 110%
Sets the overcurrent protection.
(Protection setting is cutoff.)
OPPSET
Numerical
value
(3 digits)
1 to 200W
Sets the sink power protection.
FRQ
Numerical
value
(5 digits)
0.01 to 999.99
1.00k to 120.00k
Sets the AC waveform frequency.
(If the frequency exceeds 1kHz,
add k for kilo.
Example: FRQ 1.00 k
WAVE
Character
string
SIN/SQUA/ARB1 to 7
Sets the AC waveform.
DUTY
Numerical
value
(3 digits)
10.0 to 90.0
Sets the duty ratio. Unit: %.
(Square wave)
PHASE
Numerical
value
(3 digits)
0.0 to 360.0
Sets the start phase.
(Sine wave)
ZEROPHS
Character
string
ON/OFF
Sets the zero-cross updating.

4 Program (Original Command of Matsusada Precision)
12
DOKF series
Original Command of Matsusada Precision 2 (Setting of Mode, Measurement, etc.)
Mode
Command
Parameter
Function
Setting
Mode,
Measurement
OUT
Character
string
ON/OFF
Output ON/OFF. To release
Fault, set parameter ON.
SW
Numerical
value
1/0
Output ON/OFF. To release
Fault, set parameter 1.
CV/CC
None
Sets CV/CC mode.
(No parameter)
DC/ACDC
None
Sets DC/ACDC mode.
(No parameter)
LD
Character
string
ON/OFF
Enables /Disables LD (door
switch).
LS
Character
string
ON/OFF
Enables /Disables LS (remote
switch).
RESP
Character
string
SLOW/MID2/MID1/FAST
Changes the response speed
SENSE
Character
string
ON/OFF
Enables/Disables Sense.
MEMRCL
Numerical
value
1 to 99
Recalls memory number
MEMSAV
Numerical
value
1 to 99
Saves the present setting in
memory.
MSRL1
Character
string
VRMS/VDC/VAC/
VMAX/VMIN/
IRMS/IDC/IAC/
IMAX/IMIN
Configures Measurement 1.
(Display setting)
MSRL2
Character
string
Configures Measurement 2.
(Display setting)
MSRL3
Character
string
Configures Measurement 3.
(Display setting)
MSRL4
Character
string
Configures Measurement 4.
(Display setting)
TRIG
Character
string
OFF/MAS/SLV
Sets the synchronous trigger
function.
EXTCLK
Character
string
OFF/ON
Sets the synchronous clock
function.
REN
None
Remote control
GTL
None
Local control

4 Program (Original Command of Matsusada Precision)
13
DOKF series
Original Command of Matsusada Precision 3 (Reading 1)
Mode
Command
Function
Reading
Measure
VRMSGET
Returns the voltage RMS value.
VDCGET
Returns the DC value of voltage.
VACGET
Returns the AC value of voltage.
VMAXGET
Returns the maximum voltage value.
VMINGET
Returns the minimum voltage value.
IRMSGET
Returns the current RMS value.
IDCGET
Returns the DC current value.
IACGET
Returns the AC current value.
IMAXGET
Returns the maximum current value.
IMINGET
Returns the minimum current value.
Status
STS
Returns the status of the power supply.
Checking
ACVSET?
Returns the setting of AC output voltage.
ACISET?
Returns the setting of AC output current.
DCVSET?
Returns the setting of DC output voltage.
DCISET?
Returns the setting of DC output current.
PROTSET?
Returns the protection setting.
VULIM?
Returns the setting of the positive voltage limit.
VLLIM?
Returns the setting of the negative voltage limit.
IULIM?
Returns the setting of the positive current limit.
ILLIM?
Returns the setting of the negative current limit.
OVPSET?
Returns the setting of the overvoltage.
OCPSET?
Returns the setting of the overcurrent.
OPPSET?
Returns the setting of the sink power protection.
FRQ?
Returns the setting of the AC waveform frequency
WAVE?
Returns the setting of the AC waveform.
DUTY?
Returns the duty ratio. (Square wave)
PHASE?
Returns the setting of the start phase. (Sine wave)
ZEROPHS?
Return the setting of the zero-cross updating.

4 Program (Original Command of Matsusada Precision)
14
DOKF series
Original Command of Matsusada Precision 4 (Reading 2)
Mode
Command
Function
Reading
Mode
OUT?
Returns the output setting.
SW?
Returns the output setting.
CV/CC?
Returns the CV/CC mode.
DC/ACDC?
Returns the DC/ACDC mode.
LD?
Returns the LD (door switch) setting.
LS?
Returns the LS (remote switch) setting.
MSRL1?
Returns the response.
MSRL2?
Returns the setting of Measurement 1.
MSRL3?
Returns the setting of Measurement 2.
MSRL4
Returns the setting of Measurement 3.
TRIG?
Returns the setting of Measurement 4.
EXTCLK?
Returns the synchronous clock function.

4 Program (Original Command of Matsusada Precision)
15
DOKF series
Parameter Range Used for Command4-5
The setting values of parameters vary depending on the models.And parameter exceeding the setting range is
invalid.
The list below shows Unit of setting, Minimum setting, Maximum setting, and effective digits as for each
command
Example 1) In Models of 20V, the maximum set value of ACVSET command to be set is 21.0V.
Example 2) In Models of 20V, the maximum set value of OVPSET command to be set is 22.0V.
(The maximum setting of the protection is 110% of the rated output.)
Minimum and Maximum Setting
Command
Setting unit
Minimum
setting
Maximum
setting
Note
ACVSET(?)
ACISET(?)
0.1V
0.1A
0.0V
0.0A
Rated value x 105%
Non-polarized
DCVSET(?)
DCISET(?)
0.001V
0.001A
-Rated value x
105%
+Rated value x 105%
Polarized
VULIM(?)
IULIM(?)
0.1V
0.1A
0.1V
0.1A
+Rated value x 110%
Polarized
VLLIM(?)
ILLIM(?)
0.1V
0.1A
-0.1V
-0.1A
-Rated value x 110%
Polarized
OVPSET(?)
OCPSET(?)
0.1V
0.1A
0.1V
0.1A
Rated value x 110%
Non-polarized
OPPSET(?)
1W
-1W
-200W
Negative value
only
FRQ(?)
0.01Hz
0.01Hz
999.99Hz
less than1kHz
0.01kHz
1.00kHz
120.00kHz
1kHz or higher
DUTY(?)
0.1%
10.0%
90.0%
PHASE(?)
0.1 deg
0.0 deg
360.0 deg