Caen els Enbox User manual

EnBOX User’s Manual

EnBOX

Dual Encoder Readout Box

(with 10/100/1000 Ethernet

connectivity and BEST-ENC

SFP connectivity)

User’s Manual

2.3

BEAMLINE ELECTRONIC INSTRUMENTATION

EnBOX User’s Manual

Rev. 2.0 –November 2018

This product is

compliant.

CAEN ELS s.r.l.

SS14 km 163.5

34149 –Basovizza (TS) –Italy

Registered office: via Vetraia 11, 55049 –Viareggio (LU)

Mail: [email protected]

Web: www.caenels.com

 EnBOX User’s Manual 
iii 
 
Table of Contents 
 
INTRODUCTION................................................................................................9 
1 ENBOX OVERVIEW.........................................................................................9 
2 ENBOX AT A GLANCE ..................................................................................10 
3 ENCODER INTERFACE....................................................................................13 
3.1 RESOLUTE™Interface...........................................................................13 
3.2 TONiC™Interface...................................................................................14 
4 ORDERING CODES.........................................................................................15 
SOFTWARE COMMANDS.............................................................................16 
1 COMMAND SYNTAX......................................................................................16 
2 COMMAND TABLE SUMMARY.......................................................................18 
3 COMMAND DESCRIPTION...............................................................................19 
3.1 GET Command.........................................................................................19 
3.2 ENC_SEL Command................................................................................20 
3.3 TONIC Command ....................................................................................21 
3.3.1 TONIC:GET? Command.................................................................21 
3.3.2 TONIC:AUX? Command................................................................21 
3.3.3 TONIC:AUX_CLEAR Command...................................................22 
3.3.4 TONIC:SETUP? Command.............................................................22 
3.3.5 TONIC:ZERO? Command ..............................................................22 
3.4 STATUS Command ..................................................................................23 
3.5 TEMP command.......................................................................................23 
3.6 VER Command.........................................................................................24 
3.7 HWRESET Command ..............................................................................24 
ETHERNET COMMUNICATION .................................................................25 
1 IP ADDRESS ASSIGNMENT ............................................................................25 
2 CAENELS DEVICE MANAGER .......................................................................26 
2.1 Searching for connected devices..............................................................26 
2.2 Device Configuration...............................................................................28 
2.3 Firmware Upgrade ..................................................................................29 
I/O CONNECTORS...........................................................................................31 
1 ABSOLUTE ENCODER INTERFACE..................................................................31 
2 RELATIVE ENCODER INTERFACE...................................................................32 
3 POWER CONNECTOR .....................................................................................33 
4 INTERLOCK AND GENERAL I/O CONNECTOR.................................................33 
5 ETHERNET AND SFP CONNECTOR.................................................................34 
TECHNICAL SPECIFICATIONS ..................................................................35 
MECHANICAL DIMENSIONS.......................................................................36 
ENBOX POWER SUPPLY...............................................................................37 
1 THE PS1112S LINEAR POWER SUPPLY .........................................................37 
2 THE PS1112S AT A GLANCE .........................................................................37 
3 TECHNICAL DATA.........................................................................................38 
4 I/O CONNECTORS..........................................................................................39 

EnBOX User’s Manual

7.4.1 AC Line Input Connector.........................................................................39

7.4.2 Output ......................................................................................................40

7.4.3 Status LED...............................................................................................41

7.4.4 Fixations ..................................................................................................41

7.5 MOUNTING POSITION ....................................................................................42

7.6 TECHNICAL SPECIFICATIONS.........................................................................44

EnBOX User’s Manual

Document Revision

Date

Comment

1.0

April 10th, 2017

First Release

2.0

November 20th, 2018

Document updated with new

features

2.1

October 10th, 2019

Document Updated

2.2

April 22th, 2022

Firmware upgrade for compatibility

with new BEST-ENC features

(BEST-ENC firmware ≥ 1.2.20).

Removed MATH_SEL command.

2.3

November 22nd, 2022

Added UKCA compliance logo

EnBOX User’s Manual

Safety information - Warnings

CAEN ELS will repair or replace any product within the guarantee period if

the Guarantor declares that the product is defective due to workmanship or materials

and has not been caused by mishandling, negligence on behalf of the User, accident or

any abnormal conditions or operations.

Please read carefully the manual before operating any part of the instrument

WARNING

Do NOT open the boxes

CAEN ELS S.r.l. declines all responsibility for damages or injuries caused

by an improper use of the Modules due to negligence on behalf of the User. It is

strongly recommended to read thoroughly this User's Manual before any kind of

operation.

CAEN ELS S.r.l. reserves the right to change partially or entirely the contents of this

Manual at any time and without giving any notice.

Disposal of the Product

The product must never be dumped in the Municipal Waste. Please check your local

regulations for disposal of electronics products.

EnBOX User’s Manual

vii

Read over the instruction manual carefully before using the instrument.

The following precautions should be strictly observed before using the EnBOX

device:

WARNING

•Do not use this product in any manner not

specified by the manufacturer. The protective

features of this product may be impaired if it is

used in a manner not specified in this manual.

•Do not use the device if it is damaged. Before

you use the device, inspect the instrument for

possible cracks or breaks before each use.

•Do not operate the device around explosives gas,

vapor or dust.

•Always use the device with the cables provided.

•Turn off the device before establishing any

connection.

•Do not operate the device with the cover

removed or loosened.

•Do not install substitute parts or perform any

unauthorized modification to the product.

•Return the product to the manufacturer for

service and repair to ensure that safety features

are maintained

CAUTION

•This instrument is designed for indoor use and in

area with low condensation.

EnBOX User’s Manual

viii

The following table shows the general environmental requirements for a correct

operation of the instrument:

Environmental Conditions

Requirements

Operating Temperature

0°C to 40°C

Operating Humidity

30% to 85% RH (non-condensing)

Storage Temperature

-10°C to 60°C

Storage Humidity

5% to 90% RH (non-condensing)

EnBOX User’s Manual Introduction

1.Introduction

This chapter describes the general characteristics and main features of the CAEN

ELS EnBOX - Dual Encoder Readout Box.

1.1 EnBOX overview

The CAEN ELS EnBOX is a stand-alone readout device that must be used to

interface the BEST system with RENISHAW TONiC™and RESOLUTE™in-air or

UHV encoders. The EnBOX provides a TCP/IP server to obtain data from encoders,

to configure the device and to check the operational status. The SFP interface on the

back provides a communication link to transmit the measurement data to the CAEN

ELS BEST Central Unit over an optical fiber connection.

The EnBOX provides a BiSS® interface to communicate with RENISHAW

RESOLUTE™encoders and quadrature encoder readout logic to interface with

RENISHAW TONiC™encoders. Please note that any monitoring instrument using

the same two communication protocols can be read by an EnBOX unit. Contact

CAENels or S.RI.Tech for details in case of need to interate devices different from the

RENISHAW encoders mentioned above.

The EnBOX front-end, composed of interface circuitry and power supply

circuitry is galvanically separated from digital and chassis ground.

The EnBOX has two integrated power supply circuits (one power supply is

dedicated to "REL 1" and "ABS 1" connectors and one to "REL 2" and "ABS 2"

connectors). Each power supply circuit can provide up to 3W of power at 5V rail.

This is more than enough to power RENISHAW RESOLUTE™encoders which

require 1.25W and RENISHAW TONiC™encoders which require just 1W of power.

The EnBOX is housed in a light, robust and extremely compact metallic box

that can be placed either close to the encoders or next to the BEST central control

unit.

Introduction EnBOX User’s Manual

The EnBOX provides an embeeded TCP/IPv4 server running on standard

10/100/1000 Mbps Ethernet.

1.2 EnBOX at a Glance

The EnBOX unit and its I/O connections can be seen in Figure 1 (front) and in

Figure 2 (rear).

Figure 1: front view of an EnBOX unit

Absolute encoder (RESOLUTE) interface

Encoder selection

and status LEDs

Relative encoder (TONIC) interface

EnBOX User’s Manual Introduction

Figure 2: rear view of a EnBOX unit

Two D-Sub DE-9 connectors for the absolute encoders (RESOLUTE) and two

D-Sub DA-15 connectors for relative encoders (TONIC) are placed on the front side.

Two LEDs designated with “R” (relative) and “A” (absolute) show which encoders

are selected in firmware (see “ENC_SEL” command).

A blue “Status LED” is used to signal the correct operation of the device.

During normal operation of the EnBOX unit the “Status LED” is blinking with a

frequency of 0.5Hz –i.e. the LED changes its status every 2 seconds –on the other

hand, if a fault condition arises, the LED blinks with a higher frequency than 2 Hz.

The power connector, power switch, two LEDs, LEMO connectors for I/O

triggers, interlock and general I/O connector, a standard RJ45 Ethernet connector and

an SFP connector are placed on the rear panel of the device.

The blue “CFG” led shows that the unit’s FPGA is correctly configured (in

this case the LED is turned on). The green “DC OK” LED indicates that the internal

sections are correctly powered.

The three LEMO connectors for I/O triggers are also placed on the rear panel.

Two of them act as inputs (annotated as “IN 1” and “IN 2”) and one acts as an output

(annotated as “OUT”). The connectors are reserved for future use.

Ethernet and SFP

communication

interfaces

Power Switch

Power and

Configuration

LEDs

Trigger

connectors

Power

connector

Interlocks and

general

input/output

connector

Reset

button

Introduction EnBOX User’s Manual

The “Interlocks and general I/O connector” has the pinout configuration

shown in Figure 3:

Figure 3: Interlock and general I/O connector

Pin #

Function

1-2

Reserved

3-4

Reserved

5-8

General purpose I/O

9-10

External interlock

The external and general purpose I/O pins are not yet used and are reserved for

future use.

On the rear panel of the EnBOX there is a small hole that gives access to a

reset button (“RST”), which can be used to reset the unit.

A RJ45 Ethernet connector (“ETH”), which is used to communicate with the

unit and a Small form-factor pluggable transceiver (“SFP”) which is used to

communicate with the BEST system are placed next to the reset button.

Pin #1

Pin #10

EnBOX User’s Manual Introduction

1.3 Encoder Interface

The EnBOX provides two different communication protocols with encoders: a

BiSS® interface to communicate with RENISHAW RESOLUTE™encoders and a

quadrature encoder readout logic to interface with RENISHAW TONiC™encoders.

Users can select one of the two protocols from the software. Data from the

selected interface is then provided to the firmware (e.g. for "GET" command), and

sent over an SFP interface to the BEST Central Unit.

Please note that any monitoring instrument using the same two communication

protocols can be read by an EnBOX unit. Contact CAENels or S.RI.Tech for details in

case of need to interate devices different from the RENISHAW encoders mentioned

above

1.3.1 RESOLUTE™Interface

The BiSS® interface implemented in the EnBOX follows the 32-bit version of

the protocol. The MA clock frequency is set to very conservative 500 kHz, which,

according to "BiSS® C-mode (unidirectional) for RESOLUTE™encoders" can

accomodate up to 20 m long cables. Please contact CAENels or S.RI.Tech in case

longer optical fiber cables are required. Since the communication protocol requires

transmission of 42 bits for each sample (ack, start, position, warn, error, crc) the

maximum data rate is limited to 11 kHz. Therefore, the EnBOX samples the encoder

output at 5 kHz and with the same rate the packets are sent to BEST Central Unit.

Introduction EnBOX User’s Manual

1.3.2 TONiC™Interface

The quadrature-encoder logic decodes Gray code received from the encoder and

increases or decreases an accumulator when changes are detected. TONiC™encoders

also provide the reference mark signal; this signal is used to reset the accumulator to

zero and set Z_SEEN register (see “TONIC:ZERO?” command).

To remove possible disturbances on the line the input signals are filtered with

hysteresis-based filter which will reject all pulses shorter than 60ns. This limits the

maximum stepping rate at 16 kHz.

In some configuration, TONiC™encoders also provide alarm signal and end-

switch indicators. EnBOX monitors these inputs and provides both direct output and

latched output (see "TONIC:AUX?" and "TONIC:AUX_CLEAR" commands).

The quadrature-encoder itself does not have any intrinsic data rate; however, to

be consistent with the RESOLUTE™interface data rate, also the TONiC™interface

sends new data out at 5 kHZ.

Example of compatible encoder:

TONIC Ti 0400 E 1 A

EnBOX User’s Manual Introduction

1.4 Ordering Codes

The ordering codes for the items included in this manual are the following:

Ordering Code

Description

COMP-BEI0009

EnBOX - Encoder Read BOX for BEST-ENC

Software Commands EnBOX User’s Manual

2.Software Commands

This chapter describes the software commands used for configuration of the

EnBOX unit and for data readout from encoders. For more information about the

Ethernet settings see the Ethernet Communication chapter.

2.1 Command Syntax

The command syntax used by the EnBOX protocol is described in the

following sections.

Commands must be sent in ASCII format and are composed by a “command

field”and one, two or none “parameter field”, separated by a colon (‘:’or ‘0x3A’in

hexadecimal notation). The number of “parameter fields”depends on the specific

command. Commands are NOT case sensitive and therefore the command string can

be sent either using uppercase or lowercase characters (conversion to uppercase

characters is performed internally). Each instruction must be terminated with a

‘carriage return\line feed’sequence ‘\r\n’ (or ‘0x0D 0x0A’in hexadecimal notation or

commonly CRLF).

Command Example:

ENC_SEL:ABS\r\n

•“ENC_SEL”is the command field;

•‘:’is the parameter’s separation character;

•‘ABS’is the first parameter field;

•‘\r\n’are the termination sequence of the command.

EnBOX User’s Manual Software Commands

Commands are processed one at a time; therefore, user must wait for a

response from the unit before sending the next command. All the responses from the

EnBOX device are in upper case and are terminated with the same ‘carriage

return\line feed’sequence (‘\r\n’) –i.e. CRLF –used in the command.

The reply from the device depends on the given command; for more

information about the single command please refer to the specific command section.

There are two specific replies that are commonly used in many command,

which indicate that the command has been correctly elaborated or not. Those replies

are hereafter presented:

•ACKnowledge (‘ACK’) indicates that the command is valid and it was correctly

elaborated by the device:

ACK\r\n

•“ACK”is the ACKnowledged response to a valid command;

•‘\r\n’ is the termination sequence of the reply.

•Not AcKnowledge (‘NAK’) indicates that the command is either not valid or that

it was not accepted by the devic:

NAK\r\n

•“NAK”is the Not AcKnowledged response to an invalid command;

•‘\r\n’ is the termination sequence of the reply.

The list of commands used by the EnBOX and the corresponding syntax is

hereafter presented as well as a description of each command purpose and any special

requirements related to the specific command. The commands are hereafter described

and are grouped in categories based on their purpose.

Software Commands EnBOX User’s Manual

2.2 Command Table Summary

Command

Purposes

Parameters

GET

Read a single measurement

TONIC

Read a single measurement from TONiC interface

GET?

Read the value from setup signal from TONiC interface

SETUP?

Read the value of zero-crossing detector from TONiC

interface

ZERO?

Read the values of auxiliary signals (alarms) from TONiC

interface

AUX?

Clear the latches for alarms from TONiC interface

AUX_CLEAR

ENC_SEL

Gets current value of encoder selector

Selects absolute encoder interface

ABS

Selects relative encoder interface

REL

HWRESET

Perform a hardware and firmware reset

STATUS

Query device status

TEMP

Read the devices internal temperature

VER

Query the device firmware version

EnBOX User’s Manual Software Commands

2.3 Command description

2.3.1 GET Command

The purpose of the GET command is to read back a single snapshot of the

values for the active channels. The “G\r\n” command is a useful shortcut fully

equivalent to the “GET:?\r\n” command.

Get will return “GET:” string and two decimal numbers, separated by colon

(“:”) which represent encoder counts. In case of absolute encoders this are values read

from the encoders, in case of relative encoders this are values of accumulators.

The data returned from GET command is dependent on ENC_SEL value.

Examples:

GET example:

GET:?\r\n

GET:10027:20218\r\n

or:

G\r\n

GET:10027:20218\r\n

Software Commands EnBOX User’s Manual

2.3.2 ENC_SEL Command

The ENC_SEL command can be used to select between ABSolute encoders

(RESOLUTE™) or RELative encoders (TONiC™). The current value of selector is

indicated by a LED on front-panel and can be also retrieved with “ENC_SEL:?”

Command. The value of selector is stored in non-volatile memory and will be

preserved during power cycles.

To select the absolute encoder, an “ENC_SEL:ABS”command must be sent,

to which EnBOX will return ACK\r\n. To select relative encoder, an

“ENC_SEL:REL”command must be send, to which EnBOX will return “ACK”.

To retrieve the current value of selector, an “ENC_SEL:?”command must be

sent, to which EnBOX will return either “ENC_SEL:REL” if relative encoder or

“ENC_SEL:ABS” if absolute encoder is selected.

For invalid argument (neither ABC nor REL nor ?) the EnBOX will return

“NAK”.

Examples:

Getting the value of selector:

ENC_SEL:?\r\n

ENC_SEL:REL\r\n

Setting the value to absolute encoder:

ENC_SEL:ABS\r\n

(short delay to write to non-volatile memory)

ACK\r\n

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Caen ELS EnBOX User manual

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