TDK-Lambda Z+ Series Manuale utente

Programmable DC Power Supplies

200W/400W/600W/800W in 2U

Built-in USB, RS-232 & RS-485 Interface

Series

User Manual

Optional Interface:

IEEE488.2 SCPI (GPIB) Multi-Drop

USER MANUAL FOR

IEEE Programming Interface

POWER SUPPLIES

Manual Supplement

Refer to the Z+Technical Manual for information on installing the power supply,

safety requirements, specifications, operating the front panel, using the serial

RS-232/485, USB programming and the analog programming.

IA710-04-03E

Table of Contents

INTRODUCTION ...........................................................................................................3

SCOPE OF MANUAL .....................................................................................................3

CHAPTER 1: THE IEEE-488.2 INTERFACE....................................................................3

CHAPTER 2: CONNECTION ..........................................................................................4

2.1 Point to Point ...................................................................................................................................... 4

2.2 Multi Drop............................................................................................................................................ 4

2.2.1 Selecting One Power Supply in a Multi Drop Chain............................................................................4

2.3 Communication Cables................................................................................................................... 4

CHAPTER 3: CONFIGURATION ....................................................................................5

3.1 Configuration the IEEE Controller................................................................................................ 5

3.2 Configuration the Power Supply................................................................................................. 6

3.2.1 To Select the Communication Interface .....................................................................................................6

3.2.2 To Select the Address.............................................................................................................................................6

3.2.3 To Select the Baud Rate 57600. (485 Interface only)............................................................................6

3.2.4 To Select the Communication Language SCPI. (485 interface only) .........................................6

CHAPTER 4: PROGRAMMING COMMANDS ...............................................................7

4.1 SCPI Protocol ...................................................................................................................................... 7

4.2 SCPI Common Commands............................................................................................................. 7

4.3 SCPI Subsystem Commands.......................................................................................................... 8

4.4 The Summary Registers ................................................................................................................. 10

4.5 Output Queue ................................................................................................................................... 11

4.6 Error Messages .................................................................................................................................. 11

4.7 Execution Time.................................................................................................................................. 11

4.8 Register Structure ............................................................................................................................ 12

CHAPTER 5: COMMUNICATION EXAMPLE................................................................14

INTRODUCTION

The internal factory installed General Purpose Interface Bus (GPIB) allows operation of the Z+ Power

Supply from a computer via IEEE-488.

The interface allows the user complete remote control of the Power Supply, including output

voltage and current setting and monitoring, protection setting, trigger, waveform list operation,

Power Supply status and SRQ reporting.

Communicationover theGPIB interface meetsIEEE 488.2standards for ProgrammableInstrumentation

(SCPI) compliant.

SCOPE OF MANUAL

This manual contains the information needed to operate the optional embedded IEEE(GPIB)

Interface used in the Power Supply. It includes the following:

•A general description of the GPIB.

•Connection.

•Configuration.

•Listing and description of SCPI command.

•Communication Example.

CHAPTER 1: THE IEEE-488.2 INTERFACE

The IEEE-488 digital programming interface (also called the GPIB interface) is a popular way to

connect instruments to a computer. It uses a specialized 24-pin cable with connectors that allow

cables to be ‘stacked’ together. There are eight data wires; eight control wires and eight ground

wires. If the system runs from a personal computer, there are numerous vendors of IEEE controller

cards and software.

The IEEE-488 standard has gone through several upgrades. The IEEE-488.1 focused on the

handshaking of the eight control lines.The IEEE-488.2 added status registers inside each instrument

and it added common commands to make programming groups of instruments easier. The latest

specification, SCPI, adds guidelines for the command syntax so one vendor’s Power Supply will

use the same commands as another’s. The Interface follows all of these standards.

Because many instruments may be connected and independently controlled by a single IEEE

controller, each instrument must have a unique address. The IEEE controller automatically sets

its address equal to the Power Supply address.

For complete and specific information, refer to the following documents: ANSI/IEEE Std 488.1-1987

IEEE Standard Digital Interface for Programmable Instrumentation and ANSI/IEEE Std 488.2-1987

IEEE Standard Codes, Formats, Protocols and Common Commands.

CHAPTER 2: CONNECTION

This section provides information on variable IEEE (GPIB) connection modes, communication

cables and selecting communication parameters for operation via IEEE (GPIB) interface.

It is possible connect to IEEE (GPIB) interface in two ways.

2.1 Point to Point

One IEEE Interface can control only one Z+Power Supply. Refer to Fig.2-1. Each Power Supply must

be configured for IEEE communication interface. Each unit must have a unique address, ranging

from 01 to 31. Baud rate and address are automatically fixed to“57600" and "SCPI".

2.2 Multi Drop

One IEEE Interface can control more than one Z+Power Supply. A maximum of 30 Z+units can be

connected via RS485 interface to a Power Supply with the installed IEEE option. Refer to Fig.2-2.The

Power Supply connected to a PC via the GPIB cable must be configured for an IEEE communication

interface, the other must be configured for a RS485 interface. Each unit must have a unique address,

ranging from 01 to 31. IEEE module gets the address of the unit into which it is installed. For RS485

interface set Baud rate at “57600" bps and Communication Language to "SCPI".

2.2.1 Selecting One Power Supply in a Multi Drop Chain

All the SCPI commands may be sent to any one of the Power Supplies in an RS-485 chain by first

sending the INST:nSEL address command. All commands and queries will then apply only to

the selected Power Supply, until a new INST:nSEL is sent.

At power-up, the IEEE master Power Supply is automatically the one selected.

After sending INST:nSEL, it is recommended that you verify the command by sending INST:nSEL?,

otherwise the following commands may be sent to the wrong Power Supply.

Fig.2-1: Point To Point Connection Fig.2-2: Multi Drop Connection

2.3 Communication Cables

•GPIB cable - Use standard IEEE-488, 26 AWG GPIB cable up to 3 meters in length.

•RS485 link cable - Use serial link cable with RJ-45 shielded connectors (P/N: GEN/RJ45). Refer

to Z+Series User Manual Fig.7-8.

CHAPTER 3: CONFIGURATION

3.1 Configuration the IEEE Controller

A typical IEEE controller is a personal computer with an IEEE interface card. Each card vendor

supplies its own configuration instructions and interface software.

Each time the software is executed, the controller is configured as follows:

•Controller Address = Power Supply address.

•Serial bus Baud Rate = 57600

•SCPI protocol.

•EOI Flag = TRUE. The “End or Identify” is a control line in the IEEE cable that is initiated when

the last character of a message string is sent. It is not supported by this interface.

•EOS Flag = FALSE: The “End of String”, used in some instruments to indicate the last character

of a message. It is required for this interface.

Fig.3-1: Front Panel Fig.3-2: Rear Panel

1. AC ON/OFF Switch

2. REM LED/Buttom

3. Voltage Encoder

4. Voltage Display

5. Current Encoder

6. Current Display

7. RS-232/RS-485 INPUT Remote Serial Programming

8. RS-485 OUTPUT to other Z+Power Supplies













 

3.2 Configuration the Power Supply

Refer to Fig.3-1.

3.2.1 To Select the Communication Interface

1. Press REM button. The LED is illuminated. “IN t F " appears on Voltage display.

2. Press Voltage Encoder. Existing communication mode appears on Current display.

3. Turn Current Encoder until desired message appears; "IEEE" (for unit with IEEE option) or "485".

4. To select desired parameter press Current encoder.

3.2.2 To Select the Address

1. Press REM button. The LED is illuminated. “Ad r" appears on Current display.

2. Press Current Encoder. Existing address mode appears on Current display.

3. Turn Current Encoder until desired address appears.

4. To select desired address press Current encoder.

3.2.3 To Select the Baud Rate 57600. (485 Interface only)

1. Press REM button. The LED is illuminated. “IN t F " appears on Voltage display.

2. Turn Voltage Encoder until "baUd" message appears on Current display

3. Press Current Encoder. Existing Baud Rate appears on Current display.

4. Turn Current Encoder until "57600" appears.

5. To select desired Baud Rate press Current encoder.

3.2.4 To Select the Communication Language SCPI. (485 interface only)

1. Press REM button. The LED is illuminated. “IN t F " appears on Voltage display.

2. Turn Voltage Encoder until "La n G" message appears on Current display

3. Press Current Encoder. Existing Language appears on Current display.

4. Turn Current Encoder until "SCPI" appears.

5. To select desired Language press Current encoder.

For more information refer to section 4 of Z+series User Manual

NOTE:

The power supply must be recycled bofore initiating IEEE communication intreface.

NOTE:

When new unit added to Multidrop chain connection, the Master unit (IEEE controller), must be recycled.

SCPI Command Description

*CLS Clear status

*ESE <NR1> Standard event status enable

*ESE? Return standard event status enable

*ESR? Return event status register

*IDN? Return instrument identification string

*OPC Set ”operation complete”bit in ESR

*OPC? Return a ”1” when operation command complete

*OPT? Return option number

*PSC {1|0} Power - ON status enable (1) /disable (0)

*PSC? Power - ON status clear

*RCL {1|2|3|4} Recalls a saved instrument state

*RST Reset

*SAV {1|2|3|4} Saves an instrument state

*SRE <NR1> Set service request enable register

*SRE? Return service request enable register

*STB? Return status byte

*TRG Trigger

For more information refer to section 7.11 of Z+series User Manual.

CHAPTER 4: PROGRAMMING COMMANDS

Communication over the GPIB interface meets IEEE 488.2 standards and is Standard Commands

for Programmable Instrumentation (SCPI) compliant.

4.1 SCPI Protocol

Refer to section 7.10 of Z+series User Manual

4.2 SCPI Common Commands

Common commands are used to control instrument status registers, status reporting, synchronization,

data storage, and other common functions.

4.3 SCPI Subsystem Commands

Subsystem commands control all Z+functions. For a full command description refer to section

7.12 in Z+series User Manual. Short list of Z+series commands:

SCPI Command Description

ABORt Aborts the triggered action

DISPlay

[:WINDow]:STATe <bool> Display ON/OFF*

[:WINDow]:FLASh <bool> Display Flash

GLOBal

:CURRent

:[AMPLitude] <NRf+> Set the output current for all power supplies

:VOLTage

:[AMPLitude] <NRf+> Set the output voltage for all power supplies

:OUTPut:STATe <bool> Enables/disables the all power supplies output

*RCL {1|2|3|4} Recall setting for all power supplies

*RST Reset all power supplies

*SAV {1|2|3|4} Save settings for all power supplies

INITiate

[:IMMediate] Trigger initiate

:CONTinuous <bool> Enable/disable continuously trigger*

INSTrument

:COUPle ALL|NONE Couple for all Z

power supplies

:NSELect <NRf> Select the power supply for communication*

MEASure

:CURRent[:DC]? Returns the measured output current

:VOLTage[:DC]? Returns the measured output voltage

:POWer[:DC]? Returns the measured output power

OUTPut

[:STATe] <bool> Enables/disable the supply output*

:PON

[:STATe] <bool> Programs the Power-ON state*

:PROTection

:CLEar Resets latched protection

:FOLDback

[:MODE] OFF|CC|CV Set operation protection mode*

:DELay <NRf+> Set protection delay*

:ILC

:MODE <bool> Enables/disable analog output ON/OFF control*

:TTLTrg

:MODE OFF|FSTR|TRIG Set output trigger mode*

:RELay {1|2}

[:STATe] <bool> Set control pins status*

:MODE? Returns the operation mode CV/CC/OFF

[SOURce]

:CURRent

[:LEVel]

[:IMMediate]

[:AMPLitude] <NRf+> Set the output current*

:TRIGger <NRf+> Set the triggered output current*

:MODE NONE|FIX|LIST|WAVE Select arbitrary trigger control mode*

:VOLTage

[:LEVel]

[:IMMediate]

[:AMPLitude] <NRf+> Set the output voltage*

:TRIGger <NRf+> Set the triggered output voltage*

:PROTection

:LEVel <NRf+> Set over-voltage protection level*

: LOW

:STATe UVP|UVL Set under-voltage limit or protection mode*

:[LEVel] <NRf+> Set under-voltage level*

:MODE NONE|FIX|LIST|WAVE Select arbitrary control mode*

:LIST

:COUNt {0…9999,Inf} Set number of time execution*

:CURRent <NRf+> Set output current points*

:LOAD {1|2|3|4} Load stored LIST program from memory

:STEP ONCE|AUTO Set trigger depends execution step*

:STORe {1|2|3|4} Store LIST program in memory

:DWELl <NRf+> Set time interval*

:VOLTage <NRf+> Set output voltage points*

:WAVE

:COUNt {1…9999,Inf} Set number of time execution*

:CURRent <NRf+> Set output current points*

:LOAD {1|2|3|4} Load stored WAVE program from memory

:STEP ONCE|AUTO Set trigger depends execution step*

:STORe {1|2|3|4} Store WAVE program in memory

:TIME <NRf+> Set slope time*

:VOLTage <NRf+> Set output voltage points*

STATus

:OPERation

[:EVENt]? Returns the value of the Event register

:CONDition? Returns the value of the Condition register

:ENABle <NR1> Enables specific bits in the Enable register*

:QUEStionable

[:EVENt]? Returns the value of the Event register

:CONDition? Returns the value of the Condition register

:ENABle <NR1> Enables specific bits in the Enable register*

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