Delta Elektronika SM15K Series User manual

DELTA ELEKTRONIKA B.V. Vissersdijk 4, 4301 ND www.DeltaPowerSupplies.com
DC POWER SUPPLIES Zierikzee, the Netherlands Tel. [phone]
Ethernet & Sequencer Programming SM15K
General information
Installation manual
Command description
PRODUCT MANUAL
Firmware version P0110
Contents:
1 –In General
2 –Installation
3 –Communication
4 –Conventions
5 –Command description
6 –Sequencer
7 –Command list TCP/IP
8 –Command list Sequencer

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Contents
1In General................................................................................................................................................4
1.1 Features..................................................................................................................................................................................4
1.2 Analog.....................................................................................................................................................................................4
1.3 Status......................................................................................................................................................................................4
1.4 LEDs........................................................................................................................................................................................4
2Installation ..............................................................................................................................................5
2.1 Infrastructure..........................................................................................................................................................................5
2.2 Settings...................................................................................................................................................................................5
3Communication ......................................................................................................................................6
3.1 Settings...................................................................................................................................................................................6
3.2 TCP/IP......................................................................................................................................................................................6
4Conventions............................................................................................................................................7
4.1 Syntax .....................................................................................................................................................................................7
4.2 Query.......................................................................................................................................................................................7
4.3 Space <sp> .............................................................................................................................................................................7
4.4 Terminator <term>..................................................................................................................................................................7
4.5 Parameters..............................................................................................................................................................................7
5Command description ...........................................................................................................................8
5.1 General Instructions...............................................................................................................................................................8
5.1.1 *IDN?.................................................................................................................................................................................8
5.1.2 *PUD..................................................................................................................................................................................8
5.1.3 *SAV..................................................................................................................................................................................8
5.1.4 *CLS ..................................................................................................................................................................................8
5.1.5 *RST..................................................................................................................................................................................8
5.2 Source Subsystem .................................................................................................................................................................9
5.2.1 Introduction........................................................................................................................................................................9
5.2.2 Maximum Output Voltage...................................................................................................................................................9
5.2.3 Maximum Output Current...................................................................................................................................................9
5.2.4 Maximum Output Current Negative ....................................................................................................................................9
5.2.5 Maximum Output Power.....................................................................................................................................................9
5.2.6 Maximum Output Power Negative......................................................................................................................................9
5.2.7 Set Output Voltage.............................................................................................................................................................9
5.2.8 Set Output Current.............................................................................................................................................................9
5.2.9 Set Output Current Negative ..............................................................................................................................................9
5.2.10 Set Output Power.............................................................................................................................................................10
5.2.11 Set Output Power Negative..............................................................................................................................................10
5.2.12 Output Voltage Stepsize...................................................................................................................................................10
5.2.13 Output Current Stepsize...................................................................................................................................................10
5.2.14 Output Power Stepsize.....................................................................................................................................................10
5.3 Measure Subsystem.............................................................................................................................................................10
5.3.1 Introduction......................................................................................................................................................................10
5.3.2 Measure Output Voltage...................................................................................................................................................10
5.3.3 Measure Output Current...................................................................................................................................................10
5.3.4 Measure Output Power.....................................................................................................................................................10
5.3.5 Instrument........................................................................................................................................................................11
5.4 Calibrate Subsystem............................................................................................................................................................12
5.4.1 Introduction......................................................................................................................................................................12
5.4.2 Calibrate Gain Measure Current.......................................................................................................................................13
5.4.3 Calibrate Gain Measure Voltage.......................................................................................................................................13
5.4.4 Calibrate Offset Measure Current.....................................................................................................................................13
5.4.5 Calibrate Offset Measure Voltage.....................................................................................................................................13
5.5 Power Sink............................................................................................................................................................................ 13
5.5.1 Introduction......................................................................................................................................................................13
5.5.2 RSD.................................................................................................................................................................................13
5.5.3 Interlock ...........................................................................................................................................................................13
5.5.4 Output On/Off...................................................................................................................................................................13
5.6 System Subsystem............................................................................................................................................................... 13
5.6.1 Remote Shut Down (RSD) ...............................................................................................................................................13
5.6.2 Limits ...............................................................................................................................................................................13
5.6.3 Front Panel Highlight........................................................................................................................................................14
5.6.4 Front Panel Lock..............................................................................................................................................................14
5.6.5 Remote method................................................................................................................................................................14
5.6.6 Time and date..................................................................................................................................................................15
5.6.7 Error Message..................................................................................................................................................................15
5.6.8 Warning messages...........................................................................................................................................................15
5.6.9 Password.........................................................................................................................................................................15
5.6.10 Watchdog.........................................................................................................................................................................16
5.6.11 Terminator........................................................................................................................................................................17
5.7 Output ...................................................................................................................................................................................17
5.8 Register Structure................................................................................................................................................................ 17
5.9 Functions..............................................................................................................................................................................18
5.10 Logging.................................................................................................................................................................................19
5.11 Interfaces ..............................................................................................................................................................................20
5.11.1 Digital User In-/Outputs (optional).....................................................................................................................................20
5.11.2 Isolated Contacts (optional)..............................................................................................................................................21

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5.11.3 Isolated Analog (optional).................................................................................................................................................22
5.11.4 Master / Slave Interface (optional)....................................................................................................................................24
6Sequencer.............................................................................................................................................26
6.1 Introduction ..........................................................................................................................................................................26
6.2 Commands............................................................................................................................................................................26
6.2.1 Settings............................................................................................................................................................................26
6.2.2 Jumps ..............................................................................................................................................................................27
6.2.3 Arithmetic.........................................................................................................................................................................28
6.2.4 Miscellaneous ..................................................................................................................................................................28
6.3 Sequence control by commands.........................................................................................................................................29
6.3.1 Read the Catalog.............................................................................................................................................................29
6.3.2 How to create or select a Sequence................................................................................................................................. 29
6.3.3 Upload a Sequence to SM15K (PC →PS).......................................................................................................................29
6.3.4 Delete a Sequence...........................................................................................................................................................29
6.3.5 Start a Sequence..............................................................................................................................................................29
6.3.6 Pause a Sequence...........................................................................................................................................................29
6.3.7 Step through a Sequence.................................................................................................................................................29
6.3.8 Stop a Sequence..............................................................................................................................................................30
6.3.9 Read Sequence mode......................................................................................................................................................30
6.3.10 Trigger a Step ..................................................................................................................................................................30
6.3.11 Add labels........................................................................................................................................................................30
6.3.12 Delete labels ....................................................................................................................................................................30
6.3.13 Building a Sequence ........................................................................................................................................................30
6.3.14 Select saving to non-volatile memory ...............................................................................................................................31
6.3.15 Saving to non-volatile memory .........................................................................................................................................31
6.3.16 Selecting a Programming Source.....................................................................................................................................31
6.4 Sequence control by Web....................................................................................................................................................32
6.4.1 Read the Catalog.............................................................................................................................................................32
6.4.2 How to create a sequence................................................................................................................................................32
6.4.3 How to select a sequence ................................................................................................................................................33
6.4.4 Upload a sequence to SM15K (PC →PS)........................................................................................................................33
6.4.5 Download a Sequence from SM15K (PS →PC)...............................................................................................................33
6.4.6 Delete a Sequence...........................................................................................................................................................33
6.4.7 Start a Sequence..............................................................................................................................................................33
6.4.8 Pause a Sequence...........................................................................................................................................................33
6.4.9 Step through a Sequence.................................................................................................................................................34
6.4.10 Stop a Sequence..............................................................................................................................................................34
6.4.11 Read Sequence mode......................................................................................................................................................34
6.4.12 Trigger a Step ..................................................................................................................................................................34
6.4.13 Add labels........................................................................................................................................................................34
6.4.14 Delete labels ....................................................................................................................................................................34
6.4.15 Building a Sequence ........................................................................................................................................................34
6.4.16 Saving a sequence to non-volatile memory......................................................................................................................34
6.4.17 Selecting a Programming Source.....................................................................................................................................34
6.4.18 Sequence control by user inputs (optional)....................................................................................................................... 34
6.5 Sequence control by user inputs (optional) .......................................................................................................................35
6.6 Sequence examples .............................................................................................................................................................36
6.6.1 Example 1: Generate waveform. ......................................................................................................................................36
6.6.2 Example 2: Test relays.....................................................................................................................................................37
7Command list TCP/IP...........................................................................................................................38
7.1 Index TCP / IP ....................................................................................................................................................................... 38
8Command list Sequencer....................................................................................................................43
8.1 Index Sequencer...................................................................................................................................................................43

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1In General
1.1 Features
The Remote Ethernet programming function is an interface between a TCP/IP network and the Power
Supply. It allows the operator to create fully automated systems. The Ethernet interface can set and
measure the parameters of the power supply, read the status signals, set controls, interacts with digital I/O
and generate waveforms, stored in memory. It is even possible to take over tasks from a PLC. That makes
processes and test systems more powerful and less complex.
1.2 Analog
The power supplies of Delta Elektronika are very stable and accurate. The Ethernet interface is designed
especially for these kinds of power supplies. Therefore the programming and measuring resolution is 16
bits and all units are calibrated very precisely by the factory. To calculate the step size in (Voltage or
Ampere) use the equation below:
To calculate the stepsize in Watt use the equation below:
1.3 Status
The power supplies are equipped with a lot of signals which inform the user about the status of the supply.
Status like Limit, OverTemperature, DCF, etc. can be read to check the condition of the system.
For example, ACF-signal (which indicates an incorrect input voltage) can be monitored, so action can be
taken to avoid problems before a system is switched off.
1.4 LEDs
Next to the RJ45 connector are two LEDs, see picture below.
The left orange LED is named "ERR". When this LED is ON, the Ethernet interface has generated an error
message as a result of a bad command or parameter.
The right Green LED is named "LNK/ACT", which stands for Link/Activity. This LED indicates whether or
not the Ethernet interface is connected and communicates.

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2Installation
2.1 Infrastructure
To control or program the power supply, the Ethernet interface should be connected to a TCP/IP network,
using the RJ45 connector at the rear (connector LAN). A standard RJ45 patch- or cross-link cable can be
used to connect the Ethernet interface to a network switch, or directly to a PC. The Ethernet interface of the
SM15K is Auto-MDIX. This means that for example a patch cable can be used for a direct connection,
instead of using a cross-link cable. The "LNK"- LED of the Ethernet interface will be on when the
connection is okay.
Either Cross-Link or standard Ethernet cable can be used.
The command "PING <address>" of Windows can be used (via menu Start - RUN - CMD) to check the
connection. For example: PING 10.1.0.101.
2.2 Settings
Each network has its own range of IP addresses. To be able to control the SM15K via a particular network,
the IP address of the Ethernet interface must be within the address range of that network.
Recommended address ranges are:
Class A: 10.0.0.0 to 10.255.255.255 (mask: 255.0.0.0)
Class B: 172.16.0.0 to 172.31.255.255 (mask: 255.240.0.0)
Class C: 192.168.0.0 to 192.168.255.255 (mask: 255.255.0.0)
With exception of all addresses ending with '0' or '255'.
Warning: Addresses above 223.255.255.255 are not supported on several operating systems.
The TCP/IP settings of the SM15K can be set using the front panel, the internal web page1, or using the DE
Configurator program2.
1) The PC has to be set to the IP range of the power supply to view the internal web page.
2) The DE Configurator program is available for download on http://www.DeltaPowerSupplies.com/.
Please see the Downloads section under, Products, SM15K.

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3Communication
3.1 Settings
There are two important settings to communicate properly with the SM15K, which are:
IP address: default DHCP. Can be freely configured by the user (refer to section 2.2 for settings).
Port number: fixed to 8462.
3.2 TCP/IP
Any programming language or application that can send and receive TCP/IP packages can be used for
communication with the SM15K. Use socket communication on port 8462.
Disclaimer
This software is provided by Delta Elektronika BV “as is” without guarantee. The usage of this software is at own risk. In no event
shall Delta Elektronika BV be liable for any damage as a result from the use, misuse, inability to use, faulty operation, installation or
adjustments of the software. Delta Elektronika does not accept any responsibility with regards to losses of the owner or third party
users as a result of the usage of this software.

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4Conventions
The SM15K has a command set, which includes commands compatible with the SCPI language (Standard
Commands for Programmable Instruments).
4.1 Syntax
The command descriptions contain the syntax of the instructions and show the form in which these
commands can be sent to the SM15K.
It is allowed either to use the short form or the entire command.
For example : SOURce:VOLtage<sp>5<term> can be send as :
sour:vol<sp>5<term>
source:volt<sp>5<term>
source:voltage<sp>5<term>
sour:voltage<sp>5<term>
SoUrCe:VoLt<sp>5<term>
(Sending mixed upper- and lowercase is allowed).
4.2 Query
Commands ending with a question mark "?" (ASCII character 3FH, 63d) are interpreted as a
query. If it is a valid command, the unit will respond with an answer. Otherwise an error is
generated.
4.3 Space <sp>
Within the syntax spaces are used, indicated by <sp>, which is equal to ASCII character 20H (32d).
4.4 Terminator <term>
At the end of each command or query, a terminator character is required, indicated by <term>.
Each reply on a valid query will end with <term>.
Default terminator is a linefeed (ASCII character OAH, 10d).
For other terminator options see paragraph 5-6, sub-paragraph "Terminator".
4.5 Parameters
Within this document, parameters are used to indicate the form of data sent to or coming from the SM15K.
<NR1> = positive integers: 0,1,2,3,...
<NR2> = floating point : 3.22, 0.06, etc.
<boolean> = False or True parameter : 0 or 1, OFF or ON.
[] = It is allowed to use or to skip this part of the command.

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5Command description
5.1 General Instructions
5.1.1 *IDN?
This command is used to read the identification string of the SM15K. The string contains the name, the
option number, the version of the firmware and the serial number of the Power Supply.
Syntax : *IDN?<term>
The response string has 5 fields, separated by commas.
For example :
DELTA<sp>ELEKTRONIKA<sp>BV,SM500-CP-90,000010207248,H0_P0110,0<term>
The first field shows the manufacturer's name.
The second field shows the power supply type.
The third field shows the serial number of the Power Supply
The fourth field shows the Firmware version of the Power Supply
The last field is reserved for future implementations.
5.1.2 *PUD
PUD is an abbreviation for Protected User Data. This command allows the user to give the power supply
his own name for identification or to store relevant data.
For example names like "Motor Controller Setup 3", "Battery Simulator" or "Calibrated May 3rd 2017".
This information can be maximum 72 characters long and is stored into non-volatile memory (see
command *SAV).
Syntax : *PUD<sp><data><term> data = A-Z, a-z, 0-9, <sp>, _ and -, 72 maximum
To read the Protected User Data:
Syntax : *PUD?<term>
5.1.3 *SAV
To store all relevant settings, this command saves them into non-volatile memory.
A summary of the saved setting are shown below:
Calibration gain current measure : CALIbrate:CURrent:MEAsure:GAIn
Calibration offset current measure : CALIbrate:CURrent:MEAsure:OFFset
Calibration gain voltage measure : CALIbrate:VOLtage:MEAsure:GAIn
Calibration offset voltage measure : CALIbrate:VOLtage:MEAsure:OFFset
Protected User Data : *PUD
Password : SYSTem:PASsword
If an INT MOD ANA (optional) is installed:
Calibration gain current programming : CALIbrate:INTerface:GAIn IPRG
Calibration offset current programming : CALIbrate:INTerface:OFFset IPRG
Calibration gain voltage programming : CALIbrate:INTerface:GAIn VPRG
Calibration offset voltage programming : CALIbrate:INTerface:OFFset VPRG
Calibration gain current monitoring : CALIbrate:INTerface:GAIn IMON
Calibration offset current monitoring : CALIbrate:INTerface:OFFset IMON
Calibration gain voltage monitoring : CALIbrate:INTerface:GAIn VMON
Calibration offset voltage monitoring : CALIbrate:INTerface:OFFset VMON
Set range 0...5V or 0...10V : SYSTem:INTerface:IANalog<sp><slot>,RANGE,<state><term>
Syntax : *SAV<term>
When a password is used, the only way to store this relevant settings into memory is to use:
Syntax : *SAV<sp><password><term>
Warning! this command overrides the settings already stored in memory.
5.1.4 *CLS
This reset command clears the error queue. See paragraph 5.7 "Error Message".
5.1.5 *RST
This reset command sets the power supply in a save defined state. The table below gives an overview of
the settings made after sending this reset command or after power-on of the SM15K:

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5.2 Source Subsystem
5.2.1 Introduction
The parameters (output voltage / output current / output power) have a working range from 0 to the
maximum output voltage / current / power of the power supply. The response strings contain integers (max.
values) or floating point values with 4 digits of precision (set values).
5.2.2 Maximum Output Voltage
To read the maximum output voltage, send the query:
Syntax : SOURce:VOLtage:MAXimum?<term>
For example the answer is: 500<term>
5.2.3 Maximum Output Current
To read the maximum output current, send the query:
Syntax : SOURce:CURrent:MAXimum?<term>
5.2.4 Maximum Output Current Negative
To read the maximum negative output current, send the query:
Syntax : SOURce:CURrent:NEGative:MAXimum?<term>
5.2.5 Maximum Output Power
To read the maximum output power, send the query:
Syntax : SOURce:POWer:MAXimum?<term>
5.2.6 Maximum Output Power Negative
To read the maximum negative output power, send the query:
Syntax : SOURce:POWer:NEGative:MAXimum?<term>
5.2.7 Set Output Voltage
To set the output voltage of the power supply:
Syntax : SOURce:VOLtage<sp><NR2><term>
To read the last settings, send the query:
Syntax : SOURce:VOLtage?<term>
For example the answer is: 14.0000<term>
5.2.8 Set Output Current
To set the output current of the power supply:
Syntax : SOURce:CURrent<sp><NR2><term>
To read the last settings, send the query:
Syntax : SOURce:CURrent?<term>
5.2.9 Set Output Current Negative
To set the output current nagative of the power supply:
Syntax : SOURce:CURrent:NEGative<sp><NR2><term>

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To read the last settings, send the query:
Syntax : SOURce:CURrent:NEGative?<term>
5.2.10 Set Output Power
To set the output power of the power supply:
Syntax : SOURce:POWer<sp><NR2><term>
To read the last settings, send the query:
Syntax : SOURce:POWer?<term>
5.2.11 Set Output Power Negative
To set the output power negative of the power supply:
Syntax : SOURce:POWer:NEGative<sp><NR2><term>
To read the last settings, send the query:
Syntax : SOURce:POWer:NEGative?<term>
5.2.12 Output Voltage Stepsize
To read the programming stepsize of the output voltage, send the query:
Syntax : SOURce:VOLtage:STEpsize?<term>
The reply will be in scientific notation, with an accuracy of 15 decimals.
e.g.: 1.055924221873283e-03<term>
This represents the smallest Voltage programming step possible.
5.2.13 Output Current Stepsize
To read the programming stepsize of the output current, send the query:
Syntax : SOURce:CURrent:STEpsize?<term>
The reply will be in scientific notation, with an accuracy of 15 decimals.e.g.: 1.759365200996399e-
03<term>
This represents the smallest Current programming step possible.
5.2.14 Output Power Stepsize
To read the programming stepsize of the output power, send the query:
Syntax : SOURce:POWer:STEpsize?<term>
The reply will be in scientific notation, with an accuracy of 15 decimals.e.g.: 8.935988545417786e-
01<term>
This represents the smallest Power programming step possible.
5.3 Measure Subsystem
5.3.1 Introduction
To measure the power supply output parameters Voltage, Current and Power, three different queries are
available.
These commands measure the actual output parameters, which are not necessarily the same as the output
settings like SOURce:VOLtage, SOURre:CURrent and SOURce:CURrent:NEGative, SOURce:POWer and
SOURce:POWer:NEGative .
If for example the output settings are 15 V and 5 A and the unit is in CC-mode (Constant Current), the
output voltage is not equal to the setting of 15 V, but less.
5.3.2 Measure Output Voltage
To measure the output voltage of the power supply:
Syntax : MEASure:VOLtage?<term>
The resolution of the answer is 16 bits, displayed with 4 digits of precision.
5.3.3 Measure Output Current
To measure the output current of the power supply:
Syntax : MEASure:CURrent?<term>
The resolution of the answer is 16 bits, displayed with 4 digits of precision.
5.3.4 Measure Output Power
To measure the output power of the power supply, send this query.
Syntax : MEASure:POWer?<term>
The resolution of the answer is 16 bits, displayed with 2 digits of precision.
The answer is in Watts.

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5.3.5 Instrument
To measure Ampere Hour (Ah), Watt Hour (Wh), minimum/maximum output current or power, an internal
instrument can be enabled.
The sampling interval is 100ms.
Ampere Hour Instrument
To enable the current measurement instrument:
Syntax: MEASure:INStrument<sp>AH,STATE,<boolean><term>
(Re)enabling the instrument will reset all previous measurements.
To read the enable status:
Syntax: MEASure:INStrument<sp>AH,STATE?<term>
To read the time the instrument is active:
Syntax: MEASure:INStrument<sp>AH,TIMEHR?<term>
The result will be in hours with three decimals.
If the instrument is not enabled, the result will be zero.
Syntax: MEASure:INStrument<sp>AH,TIMESEC?<term>
The result will be in seconds with one decimal.
If the instrument is not enabled, the result will be zero.
To read the total Ampere Hour for the positive current:
Syntax: MEASure:INStrument<sp>AH,POS,TOTAL?<term>
The result will be in Ampere Hour (Ah), scientific notation.
If the instrument is not enabled, the result will be zero.
To read the total Ampere Hour for the negative current:
Syntax: MEASure:INStrument<sp>AH,NEG,TOTAL?<term>
The result will be in Ampere Hour (Ah), scientific notation.
If the instrument is not enabled, the result will be zero.
To read the minimum positive current during the time the instrument is enabled:
Syntax: MEASure:INStrument<sp>AH,POS,IMIN?<term>
The result will be in Ampere. If the instrument is not enabled, the result will be zero.
To read the maximum positive current during the time the instrument is enabled:
Syntax: MEASure:INStrument<sp>AH,POS,IMAX?<term>
The result will be in Ampere. If the instrument is not enabled, the result will be zero.
To read the minimum negative current during the time the instrument is enabled:
Syntax: MEASure:INStrument<sp>AH,NEG,IMIN?<term>
The result will be in Ampere. If the instrument is not enabled, the result will be zero.
To read the maximum negative current during the time the instrument is enabled:
Syntax: MEASure:INStrument<sp>AH:NEG,IMAX?<term>
The result will be in Ampere. If the instrument is not enabled, the result will be zero.
Watt Hour Instrument
To enable the power measurement instrument:
Syntax: MEASure:INStrument<sp>WH,STATE,<boolean><term>
Enabling the instrument will reset all previous measurements to zero.
To read the enable status:
Syntax: MEASure:INStrument<sp>WH,STATE?<term>
To read the time the instrument is active:
Syntax: MEASure:INStrument<sp>WH,TIMEHR?<term>
The result will be in hours with three decimals.
If the instrument is not enabled, the result will be zero.
Syntax: MEASure:INStrument<sp>WH,TIMESEC?<term>
The result will be in seconds with one decimal.
If the instrument is not enabled, the result will be zero.
To read the total Watt Hour for the positive power:
Syntax: MEASure:INStrument<sp>WH,POS,TOTAL?<term>

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The result will be in Watt Hour (Wh), scientific notation.
If the instrument is not enabled, the result will be zero.
To read the total Watt Hour for the negative power:
Syntax: MEASure:INStrument<sp>WH,NEG,TOTAL?<term>
The result will be in Watt Hour (Ah), scientific notation.
If the instrument is not enabled, the result will be zero.
To read the minimum positive power during the time the instrument is enabled:
Syntax: MEASure:INStrument<sp>WH,POS,PMIN?<term>
The result will be in Watts. If the instrument is not enabled, the result will be zero.
To read the maximum positive power during the time the instrument is enabled:
Syntax: MEASure:INStrument<sp>WH,POS,PMAX?<term>
The result will be in Watts. If the instrument is not enabled, the result will be zero.
To read the minimum negative power during the time the instrument is enabled:
Syntax: MEASure:INStrument<sp>WH,NEG,PMIN?<term>
The result will be in Watts. If the instrument is not enabled, the result will be zero.
To read the maximum negative power during the time the instrument is enabled:
Syntax: MEASure:INStrument<sp>WH:NEG,PMAX?<term>
The result will be in Watts. If the instrument is not enabled, the result will be zero.
Measure temperature
To read the highest internal temperature of the power supply:
Syntax: MEASure:TEMperature?<term>
The answer is in degrees Celsius..
5.4 Calibrate Subsystem
5.4.1 Introduction
The calibration of the power supply is done during production. However, periodical check and calibration is
recommended. At power-on, the calibration settings are restored.
There are four parameters to calibrate. Two related to the voltage measurement and two related to the
current measurement.
For proper calibration it is recommended to use the following order (an SM500-CP-90 is used as example) :
- Set output voltage of the power supply to e.g. 1% of the maximum output voltage.
SOURce:VOLtage<sp>5.00<term>
- Calibrate the measure voltage offset, so the result of the command MEASure:VOLtage? is as
close as possible to 5.00 V.
- Set the output voltage to maximum
SOURce:VOLtage<sp>500<term>
- Calibrate the measure voltage gain, so the result of the command MEASure:VOLtage? is as
close as possible to the actual output voltage, 500 V.
Same principle is used for the current calibration.
Default settings for the offsets are 0, and default settings for the gains are 1. The resolution of both settings
and readings are 6 digits.
Notice: Both gain and offset changes influence the actual output parameter. After changing offset, check if
the gain has to change. And visa versa. To get a very accurate result, redo the calibration a few times. To
save the calibration settings to the non-volatile memory, refer to section 5.1
For MEASURE offset calibration, use the equation:
For MEASURE gain calibration, use the equation:

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5.4.2 Calibrate Gain Measure Current
To calibrate the gain of the current measurement:
Syntax : CALIbrate:CURrent:MEAsure:GAIn<sp><NR2><term>
To read the calibration settings:
Syntax : CALIbrate:CURrent:MEAsure:GAIn?<term>
5.4.3 Calibrate Gain Measure Voltage
To calibrate the gain of the voltage measurement:
Syntax : CALIbrate:VOLtage:MEAsure:GAIn<sp><NR2><term>
To read the calibration settings:
Syntax : CALIbrate:VOLtage:MEAsure:GAIn?<term>
5.4.4 Calibrate Offset Measure Current
To calibrate the offset of the current measurement:
Syntax : CALIbrate:CURrent:MEAsure:OFFset<sp><NR2><term>
To read the calibration settings:
Syntax : CALIbrate:CURrent:MEAsure:OFFset?<term>
5.4.5 Calibrate Offset Measure Voltage
To calibrate the offset of the voltage measurement:
Syntax : CALIbrate:VOLtage:MEAsure:OFFset<sp><NR2><term>
To read the calibration settings:
Syntax : CALIbrate:VOLtage:MEAsure:OFFset?<term>
Note: Range Offset : About 1/30 of the maximum output voltage/current, Range Gain : 0.9 to 1.1
5.5 Power Sink
5.5.1 Introduction
The following commands are available to check the presence of an optional Power Sink, to read the
settings and to change them.
5.5.2 RSD
To set up the Power Sink that it reacts on RSD:
Syntax: SYSTem:POWersink<sp>rsd,<boolean><term>
To check the setting:
Syntax: SYSTem:POWersink<sp>rsd?<term> 1 = reacts on RSD
5.5.3 Interlock
To set up the Power Sink that it reacts on Interlock:
Syntax: SYSTem:POWersink<sp>interlock,<boolean><term>
To check the setting:
Syntax: SYSTem:POWersink<sp>interlock?<term> 1 = reacts on Interlock
5.5.4 Output On/Off
To set up the Power Sink that it reacts on Output On/Off:
Syntax: SYSTem:POWersink<sp>output,<boolean><term>
To check the setting:
Syntax: SYSTem:POWersink<sp>output?<term> 1 = reacts on Output On/Off
5.6 System Subsystem
5.6.1 Remote Shut Down (RSD)
Syntax : SYSTem:RSD[:STAtus]<sp><boolean><term>
Boolean = 0, 1, OFF (Unlocked), ON (Locked)
To read the last setting:
Syntax : SYSTem:RSD[:STAtus]?<term>
5.6.2 Limits
To set the limits of the voltage:
Syntax : SYSTem:LIMits:VOLtage<sp><NR2>,<boolean><term> Off = disabled, On = enabled
To read the last setting:
Syntax : SYSTem:LIMits:VOLtage?

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To set the limits of the current:
Syntax : SYSTem:LIMits:CURrent<sp><NR2>,<boolean><term> Off = disabled, On = enabled
To read the last setting:
Syntax : SYSTem:LIMits:CURrent?
To set the limits of the negative current:
Syntax : SYSTem:LIMits:CURrent:NEGative<sp><NR2>,<boolean><term> Off = disabled,
On = enabled
To read the last setting:
Syntax : SYSTem:LIMits:CURrent:NEGative?
To set the limits of the power:
Syntax : SYSTem:LIMits:POWer<sp><NR2>,<boolean><term> Off = disabled, On = enabled
To read the last setting:
Syntax : SYSTem:LIMits:POWer?
To set the limits of the negative power:
Syntax : SYSTem:LIMits:POWer:NEGative<sp><NR2>,<boolean><term> Off = disabled,
On = enabled
To read the last setting:
Syntax : SYSTem:LIMits:POWer:NEGative?
5.6.3 Front Panel Highlight
Syntax : SYSTem:FROntpanel:HIGhlight
- Display on front will blink for about 2 seconds.
- Buzzer on front is on for about 2 seconds.
5.6.4 Front Panel Lock
It is possible to lock either the Menu, or lock the Menu and the Controls.
Syntax : SYSTem:FROntpanel[:STAtus]<sp><boolean><term>
Boolean = 0, 1, OFF (Unlocked), ON (Locked)
To read the last setting:
Syntax : SYSTem:FROntpanel[:STAtus]?<term>
Both the Menu and the Controls can be locked. To set whether the Menu, or the Menu and the Controls will
be locked use the command:
Syntax : SYSTem:FROntpanel:CONtrols<sp><boolean><term>
To read the last setting:
Syntax : SYSTem:FROntpanel:CONtrols?
Boolean = 0 (Menu), 1 (Menu & Controls), OFF (Menu), ON (Menu & Controls)
5.6.5 Remote method
The SM15K allows the user to switch to either local or remote programming.
The programming of CV, CC or CP can be done individually, so for example one or two can be controlled
via Ethernet interface and the others via the encoder on the frontpanel. Any combination is possible. Hence
there are three commands to set the programming source:
To set the CV programming source:
Syntax : SYSTem:REMote:CV[:STAtus]<sp><setting><term> setting = Remote or Local1
To read the last setting:
Syntax : SYSTem:REMote:CV[:STAtus]?<term>
To set the CC programming source:
Syntax : SYSTem:REMote:CC[:STAtus]<sp><setting><term> setting = Remote or Local1
To read the last setting:
Syntax : SYSTem:REMote:CC[:STATus]?<term>
To set the CP programming source:
Syntax : SYSTem:REMote:CP[:STAtus]<sp><setting><term> setting = Remote or Local1
To read the last setting:
Syntax : SYSTem:REMote:CP[:STATus]?<term>
1) The settings Remote or Local are equal to the settings Ethernet or Front.

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Possible settings are : - Front (Local)
- Web
- Sequencer
- Ethernet (Remote)
- Slot1 - Slot4
- Function1
5.6.6 Time and date
By default the power supply has no time and date set. The user can set these by using the following
commands:
Time:
Syntax: SYSTem:TIMe<sp><hour>,<minute>,<second><term>
Hour = 0-23
Minute = 0-59
Second = 0-59
To read the current time:
Syntax: SYSTem:TIMe?<term>
Answer = <hour>:<minute>:<second>
The answer will be “UNKNOWN” in case the time was not set.
Date:
Syntax: SYSTem:DATe<sp><year>,<month>,<day><term>
Year = 2019-2099
Month = 1-12
Day = 1-31
To read the current date:
Syntax: SYSTem:DATe?<term>
Answer = <year>-<month>-<day>
The answer will be “UNKNOWN” in case the date was not set. Both time and date are volatile and not
restored after a power cycle.
5.6.7 Error Message
If an unknown command, an invalid value or an illegal setting is received by the SM15K an error is
generated. The user is prompted by the Error LED on the RJ45 connector and an error message is stored
in the error queue, which contains the error number and a description of the kind of error.
The error queue can contain maximum 10 errors; more error messages are ignored. The command to read
the queue line by line is:
Syntax : SYSTem:ERRor?<term>
The SM15K returns the first error and clears it from the queue. If there are no errors (so the queue is
empty), the result of this query will be : 0,None<term>
So after 10 readings of SYSTem:ERRor? the queue is empty for sure, or after using the *CLS command.
5.6.8 Warning messages
If there are issues that generated a warning, it can be read by the following command:
Syntax: SYSTem:WARning?<term>
If there are no warnings, the result of this query will be: 0,None<term>
5.6.9 Password
To protect the most essential settings of the system (calibration values, *PUD, password) a password can
be used. The default password is : "DEPOWER".
To apply a password, send the command:
Syntax : SYSTem:PASsword<sp><old_password>,<new_password><term>
If no password is used, <old_password> must be "DEFAULT" (case independent) and <new_password>
the password to be used.
To remove the password, <old_password> must be the current password and <new_password> must be
"DEFAULT" (case independent).
Maximum length of password is 9 characters.

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Note: When a password is unknown or forgotten, the reset switch can be pressed for four seconds. This
will restore the factory default password. The Network settings will also be set to factory default "DHCP
Enable".In the SM15K manual, see paragraph 8.10 for a detailed description about the reset switch.
To store the new password, refer to section 5.1(*SAV)
To read if a password is used, send the query
Syntax : SYSTem:PASsword:STAtus?<term>
If no password is used, the SM15K will return 0<term>, otherwise it returns 1<term>.
5.6.10 Watchdog
The SM15K provides a Watchdog timer on the Ethernet interface. The power supply monitors the Ethernet
communication when set and disables its power output when no Ethernet command is received within the
time set.
The Watchdog timer is disabled after a power-on event. Send the set command once to activate the
Watchdog timer and reset the timer by sending any valid Ethernet command at regular intervals.
To set the Watchdog timer (in ms):
Syntax : SYSTem:COMmunicate:WATchdog<sp>SET,<NR1><term> <NR1>= 20…10000
To read the last setting: (valid until Timeout)
Syntax : SYSTem:COMmunicate:WATchdog<sp>SET?<term>
To read the current state of the Watchdog timer:
Syntax : SYSTem:COMmunicate:WATchdog?<term>
There are three possibilities:
20…10000<term> Current timer value in ms
0<term> Timeout. Clears indicator on Front panel and Web
-1<term> Clears Timeout, Watchdog is off
To disable the Watchdog timer:
Syntax : SYSTem:COMmunicate:WATchdog<sp>STOP<term>
To test the Watchdog timer:
Syntax : SYSTem:COMmunicate:WATchdog<sp>TEST<term>
The timer will be set to 2.5ms and expires very quickly. The indicator on the Front panel and Web will be
activated. Enable, disable or query the state of the Watchdog timer to clear the indicators.
Watchdog Example
A = Power on event, communication with the watchdog is off.
B = Gives -1, Indicates that the watchdog is still off.

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Syntax : SYSTem:COMmunicate:WATchdog?<term>
C = This will set the times of the watchdog to 1000 ms, and enables it.
Syntax : SYSTem:COMmunicate:WATchdog<sp>set,1000<term>
D = This indicates that the watchdog timer was at 823 ms when the command was received.
Syntax : SYSTem:COMmunicate:WATchdog?<term> gives 823
To reset the watchdog timer, use the following command:
Syntax : SYSTem:COMmunicate:WATchdog<sp>set,1000<term>
To see in which period value of the watchdog timer is, use the following command,
in this case it is 1000 ms.
Syntax : SYSTem:COMmunicate:WATchdog<sp>set?<term>
E = Any valid command will reset the watchdog timer.
F = The watchdog timer expires and switches the output off.
G = To set the watchdog timer to 500 ms, use the command:
Syntax : SYSTem:COMmunicate:WATchdog<sp>set,500<term>
H = To set the watchdog timer to 700 ms, use the command:
Syntax : SYSTem:COMmunicate:WATchdog<sp>set,700<term>
I = To disable the watchdog timer use the command:
Syntax : SYSTem:COMmunicate:WATchdog<sp>stop<term>
J = Gives -1, Indicates that the watchdog is still off.
Syntax : SYSTem:COMmunicate:WATchdog?<term>
K = To test the watchdog timer use the following command, it loads the watchdog timer with 2.5 ms, so it
expires very quickly:
Syntax : SYSTem:COMmunicate:WATchdog<sp>test<term>
L = The watchdog timer expires and switches the output off.
M = To set the watchdog timer to 850 ms, use the command:
Syntax : SYSTem:COMmunicate:WATchdog<sp>set,850<term>
N = To test the watchdog timer, use the following command, it loads the watchdog timer with 2.5 ms, so it
expires very quickly:
Syntax : SYSTem:COMmunicate:WATchdog<sp>test<term>
O = The watchdog timer expires and switches the output off.
Syntax : SYSTem:COMmunicate:WATchdog?<term>
P = Gives 0, This will clear the watchdog timeout indicator on the front and webserver.
Syntax : SYSTem:COMmunicate:WATchdog?<term>
Q = Gives -1, Indicates that the watchdog is still off and makes the count -1.
5.6.11 Terminator
The terminator can be chosen for the communication. The terminator is however set to default on a power-
on event (ASCII character 0AH, 10d)
To set the Terminator:
Syntax : SYSTem:COMmunicate:TERminator<sp> <value> <term> value = CR, CRLF or LF
LF = Linefeed = 0AH = 10d
CR = Carriage Return = 0DH = 13d
To read the last setting:
Syntax : SYSTem:COMmunicate:TERminator?<term>
5.7 Output
The SM15K provides a command to switch the output of a power supply ON or OFF.
Syntax : OUTPut<sp><boolean><term> boolean = 0, 1, OFF, ON
To read the last settings:
Syntax : OUTPut?<term>
5.8 Register Structure
The SM15K provides two register structures which contain actual Power Supply status information.
To read the registers :
Syntax : STATus:REGister:A?<term>
Syntax : STATus:REGister:B?<term>
The SM15K will return a decimal number which represents the binary status of the status signals. For
example, if the power supply is in CC-mode and signals DC-Fail, the register A condition will be :
66<term>. ( = 2 + 64 ).
See below image for an overview of the Registers:

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5.9 Functions
To select a function:
Syntax: SYSTem:FUNCtion:SELect<sp><nr1><term>
nr1 = 1
To read which function is selected:
Syntax: SYSTem:FUNCtion:SELect?<term>
To configure the type of the selected function:
Syntax: SYSTem:FUNCtion:TYPe<sp><select><term>
Select = 0 or None,1 or Ri, 2 or LeadlessSense
Note: All configurations and settings will be default when selecting a different type.
To read the type of the selected function:
Syntax: SYSTem:FUNCtion:TYPe?<term>
The reply will be 0, NONE or 1,RI or 2,LEADLESSSENSE
To configure the input source of the selected function:
Syntax: SYSTem:FUNCtion:CONfig<sp>SV,<setting><term>
Setting = Any of the sources shown in chapter “System remote method”, except the function itself.
Note: The output will be switched off when this command is send.
To read the configured input source of the selected function:
Syntax: SYSTem:FUNCtion:CONfig<sp>SV?<term>
To set the parameters of the function:
Syntax: SYSTem:FUNCtion:SETting<sp><item>,<value><term>
If the function is configured as Ri:
Item = Ri : value = 0.0 … 10.0 (in Ohms)
Item =Vhigh : value = 0.0 … Vmax
Item =Vlow : value = 0.0 … -Vmax
If the function is configured as LeadlessSense:
Item = Rcon : value = 0.0 … 10.0 (in Ohms)
Item =Vhigh : value = 0.0 … Vmax

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Item =Vlow : value = 0.0 … -Vmax
To read the parameters of the function:
Syntax: SYSTem:FUNCtion:SETting<sp><item><term>
If the function is configured as Ri:
Item can be: RI?, Vhigh?, Vlow?
If the function is configured as LeadlessSense:
Item can be: Rcon?, Vhigh?, Vlow?
5.10 Logging
Commands received by the unit and replies send back by the unit can be logged. This can be valuable
when debugging or monitoring the Ethernet communication between software applications and the unit.
This capturing can be configured to be on receive (Rx) only, transmit (Tx) only, or both.
The log file can be read via an Ethernet command and via the web page. The file can be cleared, the size
can be read and the maximum file size can be queried.
Furthermore, the commands used to control and read the logging can be excluded from this logging file.
This is useful when, for example, the size of the log file is monitored at a certain interval to see if the
maximum file size has been reached. Setting the exclusion to ON will prevent the log file to grow while
controlling or reading this Ethernet logging mechanism.
To configure the logging for received commands:
Syntax: SYSTem:COMmunicate:LOGging<sp>ETH,RX,<boolean><term>
boolean = 0,1,OFF or ON. Default = OFF.
To read the configuration for received commands:
Syntax: SYSTem:COMmunicate:LOGging<sp>ETH,RX?><term>
To configure the logging for transmitted replies:
Syntax: SYSTem:COMmunicate:LOGging<sp>ETH,TX,<boolean><term>
boolean = 0,1,OFF or ON. Default = OFF.
To read the configuration for transmitted replies:
Syntax: SYSTem:COMmunicate:LOGging<sp>ETH,TX?><term>
To configure the exclusion of the logging commands from the log file:
Syntax: SYSTem:COMmunicate:LOGging<sp>ETH,EXCLUDE,<boolean><term>
boolean = 0,1,OFF or ON. Default = OFF.
To read the configuration for exclusion:
Syntax: SYSTem:COMmunicate:LOGging<sp>ETH, EXCLUDE?><term>
To read the log file:
Syntax: SYSTem:COMmunicate:LOGging<sp>ETH,READ?><term>
The replied log file is encapsulated between the characters ‘<’ and ‘>’. Finally, the reply is ended with the
terminator.
For example:
Both Rx and Tx logging are enabled, the logging commands are excluded, the terminator was set to LF and
the query “MEASure:VOLtage?\n” is send.
The reply on “SYSTem:COMmunicate:LOGging<sp>ETH,READ?\n” will be:
“<MEASURE:VOLTAGE?\n1.1252\n>\n”.
Note that the output of the read command will not be logged. (Otherwise the size of the file would be
doubled every read).
For reading the log file via the web page, please refer to Product Manual, chapter 7 - web interface,
administration.
To clear the log file:
Syntax: SYSTem:COMmunicate:LOGging<sp>ETH,CLEAR><term>

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Note: after sending this clear-command, the settings of RX, TX and EXCLUDE are set to default.
To read the maximum size of the log file:
Syntax: SYSTem:COMmunicate:LOGging<sp>ETH,SIZEMAX?><term>
The reply will be the maximum amount of characters in kilobytes.
To read the current size of the log file:
Syntax: SYSTem:COMmunicate:LOGging<sp>ETH,SIZE?><term>
The reply will be the amount of logged characters in kilobytes.
5.11 Interfaces
Introduction
Up to a number of 4 interfaces can be plugged in the sockets at the rear side of the unit.
All of these interfaces can easily be plugged in afterwards at the customer site.
The following types are available:
- Serial, USB and differential programming.
- Digital User I/O for programming.
- Floating Contacts, floating Interlock and floating Enable.
- Master Slave interface.
- Isolated analog programming & monitoring, logic status outputs
Installed interfaces
To read which type of interface is installed for a specific slot, send the query:
SYSTem:INTerface:TYPe<sp><slot>?
To read the type of installed interface of all slots send the query:
SYSTem:INTerface:TYPe<sp>ALL?
The answer is separated by a semicolon, respectively for slot 1, 2, 3 and 4.
For example the answer is: DigIO;Serial;IsoAna;Ms2
5.11.1 Digital User In-/Outputs (optional)
The optional Interface Digital I/O provides 8 user inputs and 8 users outputs. These can be controlled /
monitored by commands (explained below) or can be used to interact with the Sequencer (refer to chapter
6). A total of 4 Digital I/O Interfaces can be inserted and used.
The user inputs and user outputs are floating (maximum 60VDC) from earth.
User Outputs
To program the user outputs, a decimal number can be send to the SM15K. This decimal number
represents the binary state of the 8 user outputs.
Syntax : SYSTem:INTerface:DIO:OUTput<sp><slot>,<0+NR1><term> <0+NR1>= 0,1,2,3.....255
Output A = 1
Output B = 2
Output C = 4
Output D = 8
Output E = 16
Output F = 32
Output G = 64
Output H = 128
For example, to set output C and H of the Digital I/O Interface inserted in slot 1 (closest to the Ethernet
connector) send: SYSTem:INTerface:DIO:OUTput<sp><1>,<132><term>
To reset all the user outputs of a specific Digital I/O Interface, send:
SYSTem: INTerface:DIO:OUTput<sp><slot>,<0><term> (default setting after power-on).
To read the last setting of the user outputs of specific Digital I/O Interface:
Syntax : SYSTem:INTerface:DIO:OUTput<sp><slot>?
To read the last settings of all inserted Digital I/O Interfaces:
Syntax : SYSTem:INTerface:DIO:OUTput<sp>ALL?