MKS ESP302-GPIB-ADPT User manual

ESP302-GPIB-ADPT
ESP302 GPIB to Serial Adaptor
User's Manual
A1387A
FAX: [phone]
WWW.NEWPORT.COM
1771 Deere Avenue
Irvine, CA 92606 United States
[phone]

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Copyright © 2021 by MKS Instruments, Inc.
Original instructions.
All rights reserved. No part of this work may be reproduced or transmitted in any form or by any
means, electronic or mechanical, including photocopying and recording, or by any information storage
or retrieval system, except as may be expressly permitted in writing by MKS Instruments, Inc. This
document is provided for information only, and product specifications are subject to change without
notice. Any change will be reflected in future publishings.
mksinst™ is a trademark of MKS Instruments, Inc.
Newport®is a registered trademark of MKS Instruments, Inc., Andover, MA

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Table of Contents
List of Figures and Tables ........................................................................................................................ 5
Warranty................................................................................................................................................... 6
EU Declaration of Conformity................................................................................................................... 7
UK Declaration of Conformity................................................................................................................... 8
Preface ..................................................................................................................................................... 9
1Safety Information ............................................................................................................................. 10
1.1 Safety Procedures and Precautions ........................................................................................ 10
1.2 Symbols Used in This Instruction Manual................................................................................ 10
1.3 Symbols Found on the Unit...................................................................................................... 11
1.3.1 European Union CE Mark................................................................................................. 11
1.3.2 United Kingdom Conformity Assessed Mark.................................................................... 11
1.3.3 Waste Electrical and Electronic Equipment (WEEE) Mark............................................... 11
1.4 Cautions ................................................................................................................................... 11
2Description......................................................................................................................................... 12
2.1 Introduction............................................................................................................................... 12
2.2 Overview .................................................................................................................................. 12
2.3 Protection of configuration parameters.................................................................................... 13
2.4 IEEE 488 Interface................................................................................................................... 13
2.4.1 Address Range ................................................................................................................. 13
2.4.2 Data Buffers...................................................................................................................... 13
2.5 Serial Interface......................................................................................................................... 14
2.5.1 Baud Rate......................................................................................................................... 14
2.5.2 Data Character Format..................................................................................................... 14
2.5.3 RS-232 Specifications....................................................................................................... 14
2.5.4 Flow Control...................................................................................................................... 14
2.5.5 Parity Generation/Checking.............................................................................................. 14
2.6 Indicators.................................................................................................................................. 15
2.7 Physical characteristics............................................................................................................ 16
3Installation ......................................................................................................................................... 17
3.1 Unpacking ................................................................................................................................ 17
3.2 Shipment verification................................................................................................................ 17

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3.2.1 Included accessories ........................................................................................................ 17
3.2.2 Additional accessories...................................................................................................... 17
3.3 Mounting conditions ................................................................................................................. 17
3.4 CONNECTIONS....................................................................................................................... 17
3.4.1 GPIB Interface and Connector J2..................................................................................... 17
3.4.2 Serial Interface and Connector J1 .................................................................................... 18
3.4.3 Power Connections........................................................................................................... 18
3.5 GPIB Port Configuration........................................................................................................... 19
3.5.1 Preparation ....................................................................................................................... 19
3.5.2 Starting communication .................................................................................................... 20
3.5.3 GPIB address setting........................................................................................................ 21
4Operation........................................................................................................................................... 22
4.1 Introduction............................................................................................................................... 22
4.2 Operation with the ESP302 controller...................................................................................... 22
4.3 Important note to former ESP301 controller users................................................................... 23
5Maintenance...................................................................................................................................... 24
5.1 Maintenance............................................................................................................................. 24
5.2 Troubleshooting ....................................................................................................................... 24
5.3 Repair....................................................................................................................................... 24
6Appendix............................................................................................................................................ 25
6.1 Self-Test Error Codes .............................................................................................................. 25
6.2 ERR LED Error codes.............................................................................................................. 26
Service Form .......................................................................................................................................... 27

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List of Figures and Tables
Figure 1: ESP302-GPIB-ADPT Connections .........................................................................................12
Figure 7: LEDs........................................................................................................................................15
Figure 2: ESP302-GPIB-ADPT Outline Dimensions ..............................................................................16
Figure 3: GPIB connector J2..................................................................................................................17
Figure 4: RS-232 Serial connector J1 ....................................................................................................18
Figure 5: PWR input ...............................................................................................................................19
Figure 6: ESP302-GPIB-ADPT GPIB Port Connection..........................................................................19
Figure 7: LEDs........................................................................................................................................20
Table 1: Characteristics..........................................................................................................................16
Table 2: J1 RS-232 Signal-Pin Assignments .........................................................................................18
Table 3: ESP302-GPIB-ADPT Self-Test Error Codes............................................................................25
Table 4: ESR Bit definitions.................................................................................................................... 26

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Warranty
MKS Instruments, Inc. warrants that this product will be free from defects in material and workmanship
and will comply with MKS published specifications at the time of sale for a period of one year from date
of shipment. If found to be defective during the warranty period, the product will either be repaired or
replaced at MKS option.
To exercise this warranty, write or call your local MKS office or representative. You will be given prompt
assistance and return instructions. Send the product, freight prepaid, to the indicated service facility.
Repairs will be made, and the instrument returned freight prepaid. Repaired products are warranted for
the remainder of the original warranty period or 90 days, whichever occurs last.
Limitation of Warranty
The above warranties do not apply to products which have been repaired or modified without MKS
written approval, or products subjected to unusual physical, thermal or electrical stress, improper
installation, misuse, abuse, accident or negligence in use, storage, transportation or handling.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED,
INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR USE. MKS INSTRUMENTS, Inc. SHALL NOT BE LIABLE FOR ANY INDIRECT,
SPECIAL, OR CONSEQUENTIAL DAMAGES RESULTING FROM THE PURCHASE OR USE OF ITS
PRODUCTS.

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EU Declaration of Conformity

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UK Declaration of Conformity

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Preface
CONFIDENTIALITY & PROPRIETARY RIGHTS
Reservation of Title
The MKS Instruments, Inc. Programs and all materials furnished or produced in connection with them
("Related Materials") contain trade secrets of MKS and are for use only in the manner expressly
permitted. MKS claims and reserves all rights and benefits afforded under law in the Programs
provided by MKS.
MKS shall retain full ownership of Intellectual Property Rights in and to all development, process, align
or assembly technologies developed and other derivative work that may be developed by MKS.
Customer shall not challenge, or cause any third party to challenge, the rights of MKS.
Preservation of Secrecy and Confidentiality and Restrictions to Access
Customer shall protect the MKS Instruments, Inc. Programs and Related Materials as trade secrets of
MKS and shall devote its best efforts to ensure that all its personnel protect the MKS Programs as
trade secrets of MKS. Customer shall not at any time disclose MKS trade secrets to any other person,
firm, organization, or employee that does not need (consistent with Customer's right of use hereunder)
to obtain access to the MKS Programs and Related Materials. These restrictions shall not apply to
information (1) generally known to the public or obtainable from public sources; (2) readily apparent
from the keyboard operations, visual display, or output reports of the Programs; (3) previously in the
possession of Customer or subsequently developed or acquired without reliance on the MKS
Programs; or (4) approved by MKS for release without restriction.
SERVICE INFORMATION
The user should not attempt any maintenance or service of the present product and its accessories
beyond the procedures outlined in this manual. Any problem that cannot be resolved should be
referred to MKS l Newport. When calling MKS l Newport regarding a problem, please provide the Tech
Support representative with the following information:
•Your contact information.
•System serial number or original order number.
•Description of problem.
•Environment in which the system is used.
•State of the system before the problem.
•Frequency and repeatability of problem.
•Can the product continue to operate with this problem?
•Can you identify anything that may have caused the problem?
NEWPORT CORPORATION RMA PROCEDURES
Any product being returned to MKS l Newport must have been assigned an RMA number by Newport.
Assignment of the RMA requires the item serial number.
PACKAGING
Materials being returned under an RMA must be securely packaged for shipment. If possible, reuse the
original factory packaging.

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1 Safety Information
1.1 Safety Procedures and Precautions
The following general safety precautions must be observed during all phases of operation of this
instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual
violates safety standards of design, manufacture and intended use of the instrument and may impair
the protection provided by the equipment. MKS Instruments, Inc. assumes no liability for the
customer’s failure to comply with these requirements.
DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT
Do not install substitute parts or perform any unauthorized modification to the instrument. Return the
instrument to an MKS l Newport Service Center for service and repair to ensure that all safety features
are maintained.
SERVICE BY QUALIFIED PERSONNEL ONLY
Operating personnel must not remove instrument covers. Component replacement and internal
adjustments must be made by qualified service personnel only.
1.2 Symbols Used in This Instruction Manual
Definitions of, NOTE, CAUTION, WARNING and DANGER messages used throughout the manual.
NOTE The NOTE sign denotes important information. It calls attention to a
procedure, practice, condition, or the like, which is essential to
highlight.
CAUTION The CAUTION sign denotes a hazard. It calls attention to an operating
procedure, practice, or the like, which, if not correctly performed or
adhered to, could result in damage to or destruction of all or part of the
product.
WARNING The WARNING sign denotes a hazard. It calls attention to a procedure,
practice, condition, on the like, which, if not correctly performed or
adhered to, could result in injury to personnel.
DANGER The DANGER sign Indicates an imminently hazardous situation that, if
not avoided, will result in death or serious injury.

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1.3 Symbols Found on the Unit
The following are symbols that may be found on the unit.
1.3.1 European Union CE Mark
The presence of the CE Mark on Newport equipment means that it has been designed,
tested and certified as complying with all applicable European Union (CE) regulations
and recommendations.
1.3.2 United Kingdom Conformity Assessed Mark
The presence of the UKCA Mark on Newport equipment means that it has been
designed, tested and certified as complying with all applicable United Kingdom’s
regulations and recommendations.
1.3.3 Waste Electrical and Electronic Equipment (WEEE) Mark
This symbol on the product or on its packaging indicates that this product must not be
disposed with regular waste. Instead, it is the user responsibility to dispose of waste
equipment according to the local laws. The separate collection and recycling of the
waste equipment at the time of disposal will help to conserve natural resources and
ensure that it is recycled in a manner that protects human health and the environment.
For information about where the user can drop off the waste equipment for recycling,
please contact your local MKS l Newport representative.
1.4 Cautions
CAUTION This product is a Class A device. In a residential environment, this
device can cause electromagnetic interference. In this case, suitable
measures must be taken by the user.
CAUTION Do not exceed the usable depth indicated on the mounting holes (see
section 2.7). Longer screws can damage the product or cause an
electrical issue.
CAUTION Do not place this product in a hostile environment such as X-Rays, hard
UV, or in any vacuum environment.
CAUTION Do not place this product in a location affected by dust, oil fumes,
steam or high humidity or acidity. This may cause an electric issue.
CAUTION Do not leave this product in places subject to extremely high
temperatures or low temperatures.
CAUTION Do not try to open this device. This may cause it to malfunction and will
void your warranty

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2 Description
2.1 Introduction
This manual provides operating instructions for the ESP302-GPIB-ADPT that you have purchased.
ESP302-GPIB-ADPT
The ESP302-GPIB-ADPT is a "GPIB to Serial Adaptor" especially dedicated to connecting Newport
ESP302 Motion Controller (equipped with a serial port) to a GPIB bus for users who want to drive it
with an IEEE 488 interface.
2.2 Overview
The ESP302-GPIB-ADPT is controlled from the GPIB bus and transparently converts GPIB bus
messages into serial data strings and returns data received on its serial port to the GPIB bus when
addressed to talk. Figure below shows typical use and connections.
Figure 1: ESP302-GPIB-ADPT Connections
ESP302
ESP302-GPIB-ADAPTOR

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The ESP302-GPIB-ADPT has two operation modes: Data and Command.
•In the Data mode, data passes transparently through the unit in both directions from the
GPIB bus to the serial interface. This mode is used to drive the ESP302 (see §4.2).
•In the Command mode, the ESP302-GPIB-ADPT operates as an IEEE-488.2 device and
the GPIB controller can access its internal parser which includes the IEEE-488.2 Common
Commands, the Status Reporting Structure and the SCPI configuration commands. This
mode is used for GPIB port configuration only (see §3.5)
The ESP302-GPIB-ADPT powers up in the Data mode and switches to the Command mode when sent
a GPIB Device Trigger (488.1 GET) command. Once in the Command mode, the unit will accept
configuration parameters, respond to queries, and save new configuration settings but not transfer
serial data. The unit must be put back into the Data mode with the SYST:OPER DATA command or by
turning it off and back on before it can transfer serial data. Switching from Data to Command and back
to Data without power cycling does not affect the data held in the serial receive buffer.
In the Data mode, messages from the GPIB bus are placed in the serial transmit buffer and outputted
on the selected serial port. Serial characters are received in the serial receive buffer. When the
ESP302-GPIB-ADPT senses it had received a message, it is moved to the GPIB output buffer, freeing
the receive buffer for another message. If the ESP302-GPIB-ADPT is in the Command mode when it
receives a serial message, the serial message is held in the serial receive buffer until the module is
switched back to the Data mode.
Data flow on the ESP302-GPIB-ADPT's serial interface is always controlled by hardware handshake
lines. The module uses its 'clear-to-send' output signal to allow the serial device to send it data. When
the ESP302-GPIB-ADPT's serial receive buffer gets full, it drops its 'clear-to-send' output to stop the
serial device from sending any more data until there is space in the input buffer.
The ESP302-GPIB-ADPT's transmitter is normally enabled all the time to hold the serial line in the
mark (stop bit) state when it is not transmitting.
2.3 Protection of configuration parameters
All configuration parameters presented below are set in factory to match ESP302 features and are
locked with a password. Only GPIB address can be changed according to user need.
2.4 IEEE 488 Interface
2.4.1 Address Range
Primary addresses: 1 – 30 (default: 4).
2.4.2 Data Buffers
GPIB input buffer - 4,096 bytes
Serial input buffer - 4,096 bytes

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2.5 Serial Interface
The ESP302-GPIB-ADPT provides RS-232 signals on a rear panel DE-9P male connector. The choice
of serial signals is selected by internal jumpers and factory settings. Signal pinouts are listed in Table
2.
2.5.1 Baud Rate
Baud rate 19200 baud.
2.5.2 Data Character Format
Data bits 8 data bits per character
Parity None
Type Asynchronous character
Stop bits 1 stop bits per character
2.5.3 RS-232 Specifications
The ESP302-GPIB-ADPT has single-ended RS-232C drivers and receivers and is designed to operate
as a DTE device with up to 50 feet of cable.
Signals Txd, RxD, RTS, CTS and Ground
Transmit > 6 Vdc = Logic "0" (Data '0') or Control signals On
Levels <-6 Vdc = Logic "1" (Data '1') or Control Signals Off
Receive ±1.5 Vdc minimum, ±25 Vdc Maximum
2.5.4 Flow Control
Large date transfers exceeding one buffer in length are handled by holding off data flow until the buffer
is empty and then restarting the data flow. The ESP302-GPIB-ADPT uses Request-to-Send and Clear-
to-Send signals to control the serial data flow. The signals are always enabled. Data flow is not
controlled by X-on/X-off protocol.
2.5.5 Parity Generation/Checking
Transmitted characters are sent with no parity. Checking received characters for parity is not
supported.

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2.6 Indicators
The ESP302-GPIB-ADPT has six diagnostic LEDs that display the following conditions:
PWR Indicates power on
RDY Indicates unit has passed self-test
TLK Indicates unit has recognized its talk address
LSTN Indicates unit has recognized its listen address
SRQ On when SRQ is asserted (Service request is not supported by ESP302)
ERR Indicates an error has occurred
When the ESP302-GPIB-ADPT is turned on, it performs an internal self-test which takes about five
seconds. During self-test the ESP302-GPIB-ADPT sequentially turns each LED on and off. It then
shows its current GPIB device address by blinking the appropriate front panel LEDs for about 2
seconds. The LED bit weights are:
RDY
TLK
LSTN
SRQ
ERR
16
8
4
2
1
Figure 2: LEDs
Then, if self-test was successful, PWR and RDY LEDs should be on.
Otherwise, any errors found during self-test are indicated by a repeated blinking of the error code
pattern. Refer to paragraph 6.1 for a description of the errors and their possible causes.
If the 5-volt reading is below 4.7 volts, the ESP302-GPIB-ADPT will repeat its power turn-on sequence
until the voltage level reaches 4.8 volts or higher.

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2.7 Physical characteristics
The ESP302-GPIB-ADPT is packaged in a small metal case that can be used on the bench top or
panel mounted.
Table 1: Characteristics
Size
6.11" L x 3.89" W x 1.13" H
(15.52 cm L x 9.88 cm W x 2.87 cm H)
Weight
1 lbs. (0.45 kg.) including adapter
Temperature
Operating -10° C to +55° C
Storage -20° C to +70° C
Humidity
0-90% RH without condensation
Shock/Vibration
Normal handling only
Construction
All metal case
Power 100-240 Vac @ 0.05 Ampere with power adapter
Connectors
IEEE 488 Interface: Amphenol 57-20240 female with metric studs
RS-232 Interface: Cinch DE-9P with lock studs
Figure 3: ESP302-GPIB-ADPT Outline Dimensions

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3 Installation
3.1 Unpacking
The ESP302-GPIB-ADPT is delivered in packaging designed for safe transport. When unpacking,
check the unit for signs of shipping damage (damaged box, scratches, dents, etc...) If the unit is
damaged or fails to meet specifications, notify MKS l Newport representative immediately.
3.2 Shipment verification
3.2.1 Included accessories
The following items should be included with your unit:
•Universal AC/DC Power Adapter + 4 adaptation plugs
•Instruction Manual
3.2.2 Additional accessories
The following items should be provided separately:
•Special female SUB-D9 to male SUB-D15HD serial cable; possibly:
oNewport ESP302-CAB-1.2 Serial cable 1.2-meter long or,
oNewport ESP302-RS232 adaptor (+ standard serial 9P straight cable, not null modem).
•Standard GPIB cable
3.3 Mounting conditions
If the module is to be panel mounted, use the dimensions shown in Figure 3 to drill four mounting holes
in the panel. Limit the screw length to 0.25 inches in the ESP302-GPIB-ADPT.
3.4 CONNECTIONS
3.4.1 GPIB Interface and Connector J2
The ESP302-GPIB-ADPT has a standard 24-pin, female GPIB connector with metric lock studs that
accepts stacked and straight-in GPIB connectors. Use any GPIB cable to connect your GPIB controller
to the ESP302-GPIB-ADPT.
Figure 4: GPIB connector J2

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3.4.2 Serial Interface and Connector J1
The ESP302-GPIB-ADPT’s serial port provides RS-232 single ended signals on a DE-9P male
connector with lock studs.
Table below lists the RS-232 signals and their pin numbers.
Table 2: J1 RS-232 Signal-Pin Assignments
Pin
RS-232
Signal Name
Direction Description
1
nc
no connection
2
BB
←
Receive Data in
3
BA
→
Transmit Data out
4
nc
no connection
5
AB
Ground
6
open
not used
7
CA
←
Request to Send in
8
CB
→
Clear to Send out
9
Power
Optional power input/output (not used)
Figure 5: RS-232 Serial connector J1
Use the special serial cable to connect the ESP302-GPIB-ADPT module to the ESP302 port. For
custom cables check the cable connections to assure that the transmit data from the ESP302 pin 2
connects to the ESP302-GPIB-ADPT receive data input pin 2.
3.4.3 Power Connections
Use the supplied universal AC/DC power. The power adapter converts 100 to 240 VAC power to
regulated 12 Vdc.
The ESP302-GPIB-ADPT’s universal AC/DC Power Adapter ships with four plugs. Attach the
appropriate plug for your country to the Power Adapter.
Plug the Universal AC/DC Power Adapter into an AC receptacle and into the power jack on the
ESP302-GPIB-ADPT module. Verify the module passes its self-test as described in paragraph 2.6 and
turn the power off.

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Figure 6: PWR input
3.5 GPIB Port Configuration
When shipped, the ESP302-GPIB-ADPT is configured to operate as a GPIB-to-Serial controller and
can be used directly to drive Newport ESP302 controller from a GPIB.
If necessary, only the ESP302-GPIB-ADPT GPIB address can be changed from the GPIB port.
interface (if satisfied with default GPIB address 4, you can skip to section 4)
GPIB address configuration requires an interactive program that can:
•Send the IEEE-488.1 Device Trigger (GET) command to put the ESP302-GPIB-ADPT
module into its Command mode.
•Send 488.2 Common Commands
•Send Standard Commands for Programmable Instruments (SCPI)
For instance, you can use NI Measurement & Automation Explorer (MAX) software and its VISA Test
Panel or any other appropriate GPIB interactive program.
3.5.1 Preparation
•Turn the ESP302-GPIB-ADPT module off or disconnect if from its power adapter.
•Connect the ESP302-GPIB-ADPT to your GPIB Controller.
Figure 7: ESP302-GPIB-ADPT GPIB Port Connection
ESP302-GPIB-ADAPTOR

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3.5.2 Starting communication
•Launch your usual interactive program and verify it found your GPIB Controller.
•Apply power to the ESP302-GPIB-ADPT module while watching the LEDs. After internal
self-test (during which each LED sequentially turns on and off), it then shows its current
GPIB device address by blinking the appropriate front panel LEDs for about 2 seconds.
The LED bit weights are:
RDY
TALK
LSTN
SRQ
ERR
16
8
4
2
1
The LSTN LED should blink for new units which are factory set to GPIB address 4.
Then PWR and RDY LEDs should be on.
Figure 8: LEDs
•Set the ESP302-GPIB-ADPT’s GPIB address in your interactive program.
•Send the 488.1 "GET" Trigger command to the ESP302-GPIB-ADPT module to switch to
Command mode (Advanced menu / Triggers tab / Assert Trigger button in VISA Test
Panel).
•Provide a short 30 millisecond pause after the Device Trigger before sending the unit a
command or query.
•Send the 488.2 *IDN? query and read the IDN message to be sure you are talking to the
ESP302-GPIB-ADPT:
Write: *IDN?
Read: NEWPORT, ESP302-GPIB-ADPT, S/N 501001, rev x1 (example)
•If you do not get a response, power the ESP302-GPIB-ADPT off and repeat this sequence
until you can read the IDN message.
•If the ESP302-GPIB-ADPT’s red ERR LED comes on, send an *ESR? query to clear the
error. The ESR query returns an error code that you can look up in Table 4 to see what
was wrong with the command. Correct the command and resend it until you can do it
without generating an error (commands should terminate by LF (10) and/or EOI asserted
with last character).