Jetter JetWeb JX2-CNT1 User Manual

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JX2-CNT1

Peripheral Module

User Manual

Item # 608 633 15 / Revision 3.02.4 June 2010 / Printed in Germany

JetWeb

Introduction JetWeb

Rev. 3.02.4

Jetter AG reserve the right to make alterations to its products in the interest of technical progress. These alterations will not necessarily be documented in every single case.

This manual and the information contained herein have been compiled with due diligence. However, Jetter AG assume no liability for printing or other errors or damages arising from such errors.

The brand names and product names used in this document are trademarks or registered trademarks of the respective title owner.

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JX2-CNT1 Introduction

How to Contact us:

Jetter AG Gräterstraße 2 D-71642 Ludwigsburg, Germany Germany

Phone - Switchboard: ++49 7141/2550-0 Phone - Sales: ++49 7141/2550-433 Phone - Technical Hotline: ++49 7141/2550-444

Telefax: ++49 7141 2550 425 E-Mail - Sales: sales@jetter.de E-Mail - Technical Hotline: hotline@jetter.de Internet address: http://www.jetter.de

This User Manual is an Integral Part of the JetWeb-Module JX2-CNT1:

Type:

Serial #:

Year of manufacture:

Order #:

To be entered by the customer:

Inventory #:

Place of operation:

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Introduction JetWeb

Significance of this User Manual

This manual is an integral part of the JX2-CNT1 module, and

• must be kept in a way that it is always at hand until the JX2-CNT1 module will be disposed of;

• If the JX2-CNT1 module is sold, alienated or loaned, this manual must be handed over.

In any case you encounter difficulties to clearly understand this user manual, please contact the manufacturer. We would appreciate any suggestions and contributions on your part and would ask you to contact us. This will help us to produce manuals that are more user-friendly and to address your wishes and requirements.

This manual contains important information on how to transport, erect, install, operate, maintain and repair the JX2-CNT1 module. Therefore, the persons carrying out these jobs must carefully read, understand and observe this manual, and especially the safety instructions.

Missing or inadequate knowledge of the manual results in the loss of any claim of liability on part of Jetter AG. Therefore, the operating company is recommended to have the instruction of the persons concerned confirmed in writing.

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JX2-CNT1 Introduction

Description of Symbols

This sign is to indicate a possible impending danger of serious physical damage or death.

Warning

This sign is to indicate a possible impending danger of light physical damage. This sign is also to warn you of material damage.

Caution

Warning

This sign indicates hazard of life due to electric shock caused by a high operating voltage.

This sign is to indicate hazard of serious physical damage or death due to accidentally touching dangerous parts of the device.

You have to wear goggles. Failure to comply may lead to bodily injuries.

This sign is to indicate a possible impending situation which might bring damage to the product or to its surroundings. It also identifies requirements necessary to ensure faultless operation.

Important

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Introduction JetWeb

You will be informed of various possible applications and will receive further useful suggestions. It also gives you words of advice on how to efficiently use hardware and software in order to avoid unnecessary efforts.

Note

· / -

Enumerations are marked by full stops, strokes or scores.

Operating instructions are marked by this arrow.

Automatically running processes or results to be achieved are marked by this arrow.

Reference to PC keyboard and HMI keys.

Reference to a program or file.

This symbol informs you of additional references (data sheets, literature, etc.) associated with the given subject, product, etc. It also helps you to find your way around this manual.

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JX2-CNT1 Table of Contents

1 Safety Instructions 11

1.1 Generally Valid Safety Instructions 11

1.1.1 Intended Conditions of Use 11

1.1.2 Usage Other Than Intended 11

1.1.3 Who is Permitted to Operate the JX2-CNT1 Module? 12

1.1.4 Modifications and Alterations to the Module 12

1.1.5 Repairing and servicing the JX2-CNT1 module 12

1.1.6 Decommissioning and Disposal of the JX2-CNT1 Module 12

1.2 Ensure Your Own Safety 14

1.2.1 Malfunctions 14

1.2.2 Information Signs and Labels 14

1.3 Instructions on EMI 15

2 Introduction 19

2.1 Product Description 19

2.2 Ordering Information 19

2.3 Update information 21

2.4 System Requirements 21

3 Physical Dimensions 23

4 Operating Conditions 25

5 Technical Data 29

6 Installation Guide 35

6.1 Installation Steps 35

6.2 Notes on Safety as regards the Installation 36

6.3 Notes on Safety as regards Commissioning 37

6.4 General Information 38

6.5 Sample Circuitry 38

6.6 Single-Channel Counter 39

6.6.1 Description of Connections 39

6.6.2 Description of LEDs 40

6.7 Dual-channel counter 41

6.7.1 Description of Connections - Encoder Signals 41

6.7.2 Description of Connections - Reference Switch and

Strobe Input 44

6.7.3 Description of LEDs 45

6.8 SSI Encoder 46

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Table of Contents JetWeb

6.8.1 Description of Connections 46

6.9 System Bus 48

6.9.1 Centralized Arrangement on the System Bus 48

6.9.2 Remote Arrangement on the System Bus 49

6.9.3 System Bus Cable Specification 50

7 Software Programming 53

7.1 Virtual Outputs 53

7.1.1 Addressing the Virtual Outputs 53

7.2 Register Interface 56

7.2.1 Register Addressing 56

8 Configuration and Diagnostics 59

8.1 Status and Control Functions 59

8.2 Firmware Version 61

9 Single-Channel Counter 63

10 Dual-Channel Counter 65

10.1 Reversal of Counting Direction 65

10.2 Count Value 65

10.3 Dual-Channel Counter as Single-Channel Counter 66

10.4 Referencing 68

10.4.1 Setting the reference position 68

10.4.2 Setting the Reference Offset 69

10.5 Reference Offset 70

10.6 Digital Filter 71

10.7 Strobe Function 72

11 SSI Absolute Encoder 73

11.1 Reading in SSI data 73

11.1.1 Standard Format 74

11.1.2 Fir-Tree Format 74

11.1.3 Left- and Right-Justified Data Format 75

11.1.4 Reading-In Data Formats 76

11.2 Configuration 79

11.2.1 Number and Rate of Clocks 79

11.3 Reversal of Counting Direction 81

11.4 Parity Check 81

11.5 Reference Offset 82

12 Frequency Measurement 83

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JX2-CNT1 Table of Contents

12.1 Sample Program 84

13 Master-Slave Operation 87

13.1 Mode 1 - Operation along with JX2-SV1, etc. 88

13.2 Mode 2 - Operation along with JM-2xx 91

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Table of Contents JetWeb

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JX2-CNT1 1.1 Generally Valid Safety Instructions

Table of Contents 1 Safety Instructions

1.1 Generally Valid Safety Instructions

The JX2-CNT1 module complies with the applicable safety regulations and standards. Special emphasis was given to the safety of the users.

Of course, the user should adhere to the following regulations:

• pertinent accident prevention regulations;

• accepted safety rules;

• EC guidelines and other country-specific regulations.

1.1.1 Intended Conditions of Use

The intended conditions of use include operation in accordance with the user manual. The JX2-CNT1 can be connected as peripheral module to the Jetter system bus. The JX2-CNT1 module is used for position capturing and for counting events. In the case of position capturing signals from an incremental encoder (via dualchannel counter) or an absolute encoder (SSI) are evaluated. The single-channel counter is for counting events.

The module JX2-CNT1 is supplied with power from the Jetter system bus, that is, by the basic unit - the controller - in the case of centralized arrangement. In the case of remote arrangement by the power supply module JX2-PS1. The supply voltage of the JX2-CNT1 module is DC 5 V. This operating voltage is classified as SELV (Safety Extra Low Voltage). The JX2-CNT1 module is therefore not subject to the EU Low Voltage Directive.

The JX2-CNT1 module may only be operated within the limits of the stated data (for more information refer to chapter 5 "Technical Data", page 27).

The JX2-CNT1 module is used to control machinery, such as conveyors, production machines, and handling machines.

1.1.2 Usage Other Than Intended

The JX2-CNT1 module must not be used in technical systems which to a high degree have to be fail-save, e.g. ropeways and aeroplanes.l

If the JX2-CNT1 module is to be run under ambient conditions, which differ from the conditions mentioned in chapter 4 "Operating Conditions", page 23, the manufacturer is to be contacted beforehand.

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1 Safety Instructions JetWeb

1.1.3 Who is Permitted to Operate the

JX2-CNT1 Module?

Only instructed, trained and authorized persons are permitted to operate the JX2CNT1 module. Mounting and backfitting may only be carried out by specially trained personnel, as specific know-how will be required.

Transport: Only by personnel with knowledge in handling

electrostatically sensitive components.

Installation: Only by specialists with training in electrical

engineering.

Commissioning: Only by specialists with extensive knowledge of, and

experience with, electrical engineering / drive technology.

1.1.4 Modifications and Alterations to the

Module

For safety reasons, no modifications and changes to the JX2-CNT1 module and its functions are permitted.

Any modifications to the JX2-CNT1 module not expressly authorized by the manufacturer will result in a loss of any liability claims to Jetter AG.

The original parts are specially designed for the JX2-CNT1 module. Parts and equipment from other manufacturers are not tested on our part, and are, therefore, not released by Jetter AG.

The installation of such parts may impair the safety and the proper functioning of the JX2-CNT1 module.

Any liability on the part of Jetter AG for any damages resulting from the use of non original parts and equipment is excluded.

1.1.5 Repairing and Servicing the

JX2-CNT1 Module

The JX2-CNT1 module must not be repaired by the operator itself. The JX2-CNT1 module does not contain any parts which can be repaired by the operator. If the JX2-CNT1 module needs repairing, please send it to Jetter AG.

The JX2-CNT1 module is maintenance-free. Therefore, absolutely no inspection or maintenance works are required for the operation of this device.

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JX2-CNT1 1.1 Generally Valid Safety Instructions

1.1.6 Decommissioning and Disposal of the

JX2-CNT1 Module

Decommissioning and disposal of the JX2-CNT1 module are subject to the environmental legislation of the respective country in effect for the operator's premises.

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1 Safety Instructions JetWeb

1.2 Ensure Your Own Safety

Disconnect the JX2-CNT1 module from the mains to carry out maintenance work. By doing so, you will prevent accidents resulting from electric voltage and moving parts.

Safety and protective devices, e.g. the barrier and cover of the terminal box must never be shunted or by-passed.

Dismantled protective equipment must be reattached prior to commissioning and checked for proper functioning.

1.2.1 Malfunctions

Malfunctions or other damages are to be reported to a responsible person at once.

Safeguard the JX2-CNT1 module against misuse or accidental use.

Only qualified experts are allowed to carry out repairs.

1.2.2 Information Signs and Labels

Markings, information signs, and labels always have to be observed and kept readable.

Damaged or unreadable information signs and labels have to be replaced.

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JX2-CNT1 1.3 Instructions on EMI

1.3 Instructions on EMI

The noise immunity of a system corresponds to the weakest component of the system. For this reason, correct wiring and shielding of cables is of paramount importance.

Important!

Measures for increasing immunity to interference:

Attach the JX2-CNT1 module to a DIN rail acc. to EN 50022-35 x 7.5.

Connect the JX2-CNT1 module to the controller or the power supply module JX2-PS1 via Jetter system bus.

Connect the JX2-CNT1 module to the Jetter system bus by directly plugging it into a JX2 module (not through a cable). The system bus can be extended by means of a cable.

Follow the instructions given in Application Note 016 "EMC-Compatible Installation of the Electric Cabinet" published by Jetter AG.

The following instructions are excerpts from Application Note 016:

On principle, physical separation should be maintained between signal and power lines. We recommend spacings greater than 20 cm. Cables and lines should cross each other at an angle of 90°.

Shielded cables must be used for the following lines: Analog lines, data lines, motor cables coming from inverter drives (servo output stage, frequency converter), lines between components and interference suppressor filter, if the suppressor filter has not been placed at the component directly.

Shield cables at both ends.

Unshielded wire ends of shielded cables should be as short as possible.

The entire shield must, in its entire perimeter, be drawn behind the isolation, and then be clamped under an earthed strain relief with the greatest possible surface area.

When male connectors are used:

The shield (impedance shielding) must, in its entire perimeter, be drawn behind the shielding clamp of the metallized connector housing, respectively of the EMC gland bushing, its greatest possible surface area being clamped under a strain relief.

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1 Safety Instructions JetWeb

Only use metallized connectors, e.g. SUB-D with metallized housing. Make sure that the strain relief is directly connected with the housing here as well (see Fig. 1).

Fig. 1: Shielding of SUB-D connectors in conformity with EMC standards.

If the shield cannot be attached to the connector, for example, with a screw type terminal:

It is important that shield and strain relief are highly conductive and directly connected to a grounded surface with the greatest possible surface area. When doing so, grounding must be implemented in a way that the unshielded portion of the cable is as short as possible (refer to Fig. 2).

Reference switch

Strobe sensor

Counter

- +

POWER

24V

12345678 DIRST0V

24V

STOP

INPUT

2345

OUTPUT SM

RUN

IN OUT

24V

RUN

ERR

DIR

STEP

COUNTER IN ANALOG OUT

678AB0V0V12340VOUT0V

X21

S0V STR0V REF

INPUT

Jetter

Nano-B

ENCODER

X61

Jetter

JX2-CNT1

REF

Transformer

DC 24 V

Incremental

encoder

Fig. 2: Shielding of screw terminals in conformity with the EMC standards.

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JX2-CNT1 1.3 Instructions on EMI

Important!

To avoid malfunctions the following must be ensured:

• The shielding must be clamped under a strain relief with the greatest possible surface area.

• The connection between shielding and ground must be electrically conducting.

• The length of unshielded conductor ends must not exceed 8 cm (refer to Fig. 2).

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1 Safety Instructions JetWeb

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JX2-CNT1 2 Introduction

2Introduction

This manual contains important information on how to transport, erect, install, operate, maintain and repair the non-intelligent expansion module JX2-CNT1 with firmware version 3.02 or higher.

2.1 Product Description

The JX2-CNT1 module is for position capturing and for counting events. In the case of position capturing signals from an incremental encoder (via dual-channel counter) or an absolute encoder (SSI) are evaluated. The single-channel counter is for counting events.

The position obtained from position capturing can be evaluated in the application program or be sent via system bus as set position (master position) to an axis controller by Jetter AG. The single-channel counter is used e.g. as workpiece counter.

2.2 Ordering Information

Designation Description Article No.

JX2-CNT1 Counter module: 1 dual-channel counter (1

MHz) + 1 single-channel counter (10 kHz) or 1 SSI absolute encoder + 1 single-channel counter

Jetter system bus cable

Jetter system bus connecting cable:

Length 0.2 m: Cable assy # 530 0.2 m Article # 10309001

Length 0.5 m: Cable assy # 530 0.5 m Article # 10309002

Length 1.0 m: Cable assy # 530 1.0 m Article # 10309003

Length 1.5 m: Cable assy # 530 1.5 m Article # 10309004

Length 2.0 m: Cable assy # 530 2.0 m Article # 10309006

Length 2.5 m: Cable assy # 530 2.5 m Article # 10309016

Cable assy # 530 + length:

0.2 m; 0.5 m; 1.0 m; 1,5 m; 3 m; 4 m; 5 m (other lengths on request)

10000139

see table below

Length 3.0 m: Cable assy # 530 3.0 m Article # 10309015

Length 4.0 m: Cable assy # 530 4.0 m Article # 10309007

Length 5.0 m: Cable assy # 530 5.0 m Article # 10309008

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2.3 Update Information JetWeb

2.3 Update Information

It is not possible to update the operating system of JX2-CNT1 modules from JetSym. The operating system can be updated only by Jetter AG.

2.4 System Requirements

Software Versions

Module Minimum Software Version

JX2-CNT1 3.02

Controller Minimum Software Version

JC-241, JC-243, JC-246 3.00

NANO-B, NANO-C, NANO-D 2.01

JX6-SB(-I) (for JC-647(-MC), DELTA, JC-800)

2.12

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JX2-CNT1 3 Physical Dimensions

3 Physical Dimensions

Fig. 3: Front View - JX2-CNT1

Fig. 4: Side View - JX2-CNT1

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Fig. 5: Top View - JX2-CNT1

Design

Connection to the basic unit via Jetter system bus

Encoder connection Female connector SUB-D, 15 pins

Counter Connection COMBICON terminal block

Dimensions (H x W x D in mm) 115 x 45 x 68

Housing bottom Aluminium, powder coated

Housing cover Steel sheet metal coated with AlZn

Weight 190 g

Installation DIN-rail EN 50022-35 x 7.5

Male connector SUB-D, 9 pins

Color: blue

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JX2-CNT1 4 Operating Conditions

4 Operating Conditions

Operating Parameters - Environmental Data

Parameter Value Reference

Operating Temperature Range

Storage Temperature Range

Air Humidity / Humidity Rating

Pollution Degree 2 DIN EN 61131-2

Corrosion Immunity/ Chemical Resistance

Max. Operating Altitude

0° C through 50° C

-25° C through +70° C DIN EN 61131-2 DIN EN 60068-2-1 DIN EN 60068-2-2

5 % to 95 % No condensing

No special protection against corrosion. Ambient air must be free from higher concentrations of acids, alkaline solutions, corrosive agents, salts, metal vapors, or other corrosive or electroconductive contaminants

max. 2,000 m above sea level DIN EN 61131-2

DIN EN 61131-2

Operating Parameters - Mechanical Data

Parameter Value Reference

Free Falls Withstanding Test

Vibration resistance 10 Hz - 57 Hz: with an amplitude

Shock Resistance 15 g occasionally, 11 ms,

Degree of Protection IP20, rear: IP10 DIN EN 60529

Mounting Position Any position, snapped on DIN

Height of fall (units within packing): 1 m

of 0.0375 mm for continuous operation (peak amplitude of

0.075 mm)

57 Hz .. 150 Hz: 0.5 g constant acceleration for continuous operation (1 g constant acceleration as peak value), 1 octave per minute, 10 frequency sweeps (sinusoidal), all spatial axes

sinusoidal half-wave, 2 shocks in all three spatial axes

rail

DIN EN 61131-2 DIN EN 60068-2-32

DIN EN 61131-2 IEC 68-2-6

DIN EN 61131-2 IEC 2/27/1968

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Operating Parameters - Electrical Safety

Parameter Value Reference

Protection Class III DIN EN 61131-2

Dielectric Test Voltage

Overvoltage Category

Functional ground is connected to chassis ground internally.

II DIN EN 61131-2

DIN EN 61131-2

Operating Parameters - EMC (Emitted Interference)

Parameter Value Reference

Enclosure Frequency 30 - 230 MHz,

limit 30 dB (µV/m) at 10 m distance Frequency band 230 to 1,000 MHz, limit 37 dB (µV/m) at 10 m distance (class B)

DIN EN 50081-1 DIN EN 55011 DIN EN 50081-2

Operating Parameters (EMC) - Enclosure

Parameter Value Reference

Magnetic field with mains frequency

RF field, amplitudemodulated

ESD Discharge through air:

50 Hz, 60 Hz 30 A/m

Frequency band 27 - 1,000 MHz Test field strength: 10 V/m AM 80% at 1 kHz Criterion A

Test peak voltage 15 kV (Humidity Rating RH-2 / ESD-4) Contact Discharge: Test peak voltage 4 kV (severity level 2) Criterion A

DIN EN 61000-6-2 DIN EN 61000-4-8

DIN EN 61131-2 DIN EN 61000-6-2 DIN EN 61000-4-3

DIN EN 61000-6-2 DIN EN 61131-2 DIN EN 61000-4-2

Operating Parameters (EMC) - Signal Ports

Parameter Value Reference

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JX2-CNT1 4 Operating Conditions

Operating Parameters (EMC) - Signal Ports

Asymmetric RF, amplitude-modulated

Burst (fast transients) Test voltage 1 kV

Frequency band 0.15 - 80 MHz Test voltage 10 V AM 80% at 1 kHz Source impedance 150 Ohm Criterion A

tr/tn 5/50 ns Repetition frequency 5 kHz Criterion A

DIN EN 61000-6-2 DIN EN 61000-6-2

DIN EN 61131-2 DIN EN 61000-6-2 DIN EN 61000-4-4

Operating Parameters (EMC) - Immunity to

Interference of DC Power Supply I/Os

Parameter Value Reference

Asymmetric RF, amplitude-modulated

Burst (fast transients) Test voltage 2 kV

Frequency band 0.15 - 80 MHz Test voltage 10 V AM 80% at 1 kHz Source impedance 150 Ohm Criterion A

tr/tn 5/50 ns Repetition frequency 5 kHz Criterion A

DIN EN 61000-6-2 DIN EN 61000-6-2

DIN EN 61131-2 DIN EN 61000-6-2 DIN EN 61000-4-4

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JX2-CNT1 5 Technical Data

5 Technical Data

Technical Data - JX2-CNT1

Environment / Design / Installation

Ambient temperature 0 °C – +50 °C

Dimensions (H x W x D in mm) 115 x 45 x 68

Weight 190 g

Housing bottom Aluminium, powder coated

Color: blue

Enclosure Steel sheet metal coated with AlZn

Installation DIN-rail EN 50022-35 x 7.5

Logic Circuit - Power Supply

Power supply DC 5 V supplied by system bus:

• Centralized arrangement: via basic unit

• remote arrangement: via power supply module JX2-PS1.

Current consumption (from system bus)

Power dissipation of logic circuit ≤ 0.5 W

Connection to System Bus

Connection to the basic unit via system bus

Module code on the system bus 5

200 mA max. (module logic circuit and sensor supply)

Male connector SUB-D, 9 pins

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JetWeb

Technical Data - JX2-CNT1 (continued)

Counter Interfaces

Counter Inputs • 1 single-channel counter,

24 V signal level

• 1 dual-channel counter Incremental encoder 5 V, signal level: 5 V differential voltage (symmetrical, antivalent), to RS-422

or Incremental encoder 24 V, signal level: single-ended (asymmetrical)

or Single-channel counter, 24 V signal level

• 1 SSI absolute encoder

Counters which can be operated simultaneously

Single-Channel Counter 24 V

Type of connection Terminal block X21

Maximum counting rate (minimum pulse width)

Signal Level 24 V

Operating Point - Low level: up to 2 V

Input current 6 mA max.

Electrical isolation None

Counting method Single evaluation

Selection of counting direction Yes, via software

• Single-channel and dual-channel counter or

• Single-channel counter and SSI encoder

10 kHz (≥ 50 µs)

- High level: 20 V ... 30 V

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JX2-CNT1 5 Technical Data

Technical Data - JX2-CNT1 (continued)

Dual-Channel Counter - General Information

Type of connection

Power supply for encoders (with operating voltage of DC 5 V)

Frequency filter Parameter range: 7.8 kHz - 1 MHz

Reference function Yes, signal from reference switch

Strobe function (capture function) Yes

Digital inputs

- Reference switch (X21.REF)

- Strobe signal (X21.STR)

Dual-Channel Counter - 5 V

Maximum counting rate 1 MHz

Female connector SUB-D, 15 pins - X61

DC 5 V (-5%), 100 mA max., shortcircuit-proof, via X61

rounded with K0 signal from encoder. Reference switch connection: Terminal block X21.REF

Connection: Terminal block X21.STR Sampling time: >10 µs (in the case of disabled filter)

DC 24 V relating to X21.0V, at max. 6 mA, each

Operating points:

- Low level: up to 2 V

- High level: 20 V ... 30 V

Signal level 5 V differential voltage (symmetrical,

antivalent), to RS-422 (do not use terminating resistors)

Terminating resistor Not installed

Electrical isolation None

Counting method Quadruple evaluation

Selection of counting direction

Dual-Channel Counter - 24 V

Maximum counting rate 500 kHz

Signal level 24 V - single-ended (asymmetrical)

Operating point - Low level: up to 10 V

Input current Max. 10 mA per channel (K0, K1, K2)

Electrical isolation None

Counting method Quadruple evaluation

Selection of counting direction

Yes, via hardware (reversal of K1 and K2)

- High level: 15 V ... 30 V

Yes, via hardware (reversal of K1 and K2)

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JetWeb

Technical Data - JX2-CNT1 (continued)

Dual-Channel Counter as 24 V Single-Channel Counter

Maximum counting rate (minimum pulse width)

Signal level 24 V

Operating point - Low level: up to 10 V

Input current Max. 10 mA per channel (K0, K1, K2)

Electrical isolation None

Counting method Single evaluation

Selection of counting direction Yes, via hardware (based on signal K2)

SSI Encoder

Type of connection

Power supply for encoders (with operating voltage of DC 5 V)

Position resolution 10 - 24 bits

Type of signal decoding Gray-code and binary code

Accepted data formats - Standard format

500 kHz (≥ 1 µs)

- High level: 15 V ... 30 V

Female connector SUB-D, 15 pins - X61

DC 5 V (-5 %), 100 mA max., short-circuit-proof, via X61

- Left-justified

- Right-justified

- Fir-tree format

Parity bit evaluation Yes, maximum: one parity bit

Selection of counting direction Yes, via software

30 Jetter AG

JX2-CNT1 6.1 Installation Steps

6 Installation Guide

6.1 Installation Steps

Important!

Make sure that the connection cables are correctly wired when installing the

JX2-CNT1 module.

Please check the shipment for completeness.

Choose the place of the DIN rail for mounting the JX2-CNT1 module and, if necessary, other expansion modules, such as JX-SIO, and JX2-..., in your electric cabinet.

Mount the module and any expansion modules to the DIN rail as described in the corresponding user manuals.

Connect the module to the corresponding controller, such as JC-24x, NANO-A/B/C/D, etc., using a system bus cable. Connect any further expansion modules using the correct cable.

Launch JetSym and set the communication parameters.

Switch the controller on and download a JetSym program from your computer to your controller.

Check the module for correct functioning.

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6 Installation Guide JetWeb

6.2 Notes on Safety as regards the Installation

DANGER resulting from electric shock!

If the JX2-CNT1 module is not isolated from the mains, for example during installation, maintenance, and repair, you can get an electric shock. Please observe the following precautions in order to avoid injuries such as

Caution

muscle cramps, and damages to the module:

Have works on the electric and electronic system performed by qualified personnel only.

Do not plug or unplug plug-in connectors while they are energized. Also, do not unscrew screwed connections of energized components. Failure to comply with these rules may cause voltage peaks and, thus, electromagnetic interferences which may result in damages to the equipment, as well as in electrical hazards to persons.

Therefore, switch off the operating voltage of the machine before carrying out any work on it.

Before carrying out installation and maintenance jobs, isolate the module and all devices connected to it from the mains.

Avoid damages caused by electrostatic discharge by touching grounded points before carrying out installation work. Damages caused by ESD do not always become immediately apparent!

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JX2-CNT1 6.3 Notes on Safety as regards Commissioning

6.3 Notes on Safety as regards Commissioning

DANGER resulting from electric shock!

If the JX2-CNT1 module is not isolated from the mains, for example during commissioning, you can get an electric shock. Please observe the following precautions in order to avoid injuries such as

Caution

muscle cramps, and damages to the module:

Have works on the electric and electronic system performed by qualified personnel only.

Prior to commissioning, please do the following:

Reattach dismantled protective equipment and check it for proper functioning. This way, protection from moving parts of the machine will be achieved.

Connect only devices or electrical components to the signal lines of the JX2-CNT1 module that have been sufficiently isolated from the connected electric circuits;

Protect the JX2-CNT1 module and the equipment connected to it against accidental contact with live parts and components;

Always carry out each commissioning, even a short functional test, with correctly connected PE bus;

Ensure a durable connection between controller, module and expansion modules connected to it.

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6 Installation Guide JetWeb

6.4 General Information

All voltage signals relate to 0 V.

Within the module, the 0 V signal is connected to chassis ground.

Note

6.5 Sample Circuitry

Reference switch

Strobe sensor

Counter

POWER

24V

12345678 DIRST0V

24V

STOP

INPUT

2345

OUTPUT SM

RUN

IN OUT

24V

RUN

ERR

DIR

STEP

COUNTER IN ANALOG OUT

678AB0V0V12340VOUT0V

X21

S0V STR0V REF

INPUT

Jetter

Nano-B

ENCODER

X61

Jetter

JX2-CNT1

REF

Transformer

DC 24 V

Incremental

encoder

Fig. 6: Diagram of input wiring of a JX2-CNT1 module with NANO-B

- +

34 Jetter AG

JX2-CNT1 6.6 Single-Channel Counter

6.6 Single-Channel Counter

X21

S0V STR0V REF

INPUT

Jetter

ENCODER

JX2-CNT1

REF

X61

Fig. 7: Single-channel counter

The single-channel counter is connected to terminal blocks X21.S and X21.0V (see Fig. 8).

6.6.1 Description of Connections

Terminal Specifications

• 5-pole terminal block COMBICON RM 5.08 (for printed circuit boards)

• Cable cross-sectional area: 0.25 - 2.5 mm

• Torque (for input plug screws): 0,5 .. 0.6 Nm

• The maximum stripping length for input lines is 7 mm.

• The accepted VDE guidelines must be followed

• Bladed screw-driver: 0.6 x 3.5 x 100 mm

Connecting Cable Specifications

• Not needed

Cable Shielding

Make sure that the signal lines are shielded (see Fig. 6):

• Clamp the shield with the greatest possible surface area under the grounding

clamp and establish an electroconductive connection with the grounding block.

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6 Installation Guide JetWeb

Terminal Block X21 - Single-Channel Counter

Pin Signal Comment

X21.S

X21.0V

Fig. 8: Connection of single-channel counter to terminal block X21

Counting signal

0 V

Counter input: DC 24 V, max. 6 mA

- Low level: up to 2 V

- High level: 20 V ... 30 V

Reference potential

6.6.2 Description of LEDs

Signal LED - Single-Channel Counter

LED Color State Function

S amber Off Low level of counter input

is lit High level of counter input

36 Jetter AG

JX2-CNT1 6.7 Dual-Channel Counter

6.7 Dual-Channel Counter

X21

S0V STR0V REF

INPUT

Jetter

ENCODER

JX2-CNT1

REF

X61

Fig. 9: Dual-Channel Counter

Incremental encoders with 5 V differential voltage (symmetrical, antivalent) to RS-422 or incremental encoders with 24 V single-ended (asymetrical) can be connected to the female 15-pin SUB-D connector as dual-channel counter. The dual-channel can also be used as single-channel counter with 24 V signal level. In addition, for reference purposes a reference switch can be connected to terminal block X21.REF. In order to use the strobe function, a sensor can be connected to terminal block X21.STR.

6.7.1 Description of Connections - Encoder Signals

15-Pin Female SUB-D Connector X61

Dual-Channel Counter 5 V - Differential Voltage

View Pin Signal Comment

1 2

3 4 5 6 7 8 9

11 12 13 14 15

GND K0 + K0 K1 + K1 K2 + K2 Do not connect Do not connect DC 5 V (-5%),

Do not connect Do not connect Do not connect Do not connect Do not connect

Reference potential Channel N (zero pulse) Channel N (zero pulse) inverted Channel A Channel A inverted Channel B Channel B inverted

Power supply for encoders with operating voltage DC 5 V, shortcircuit proof up to 100 mA

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6 Installation Guide JetWeb

15-Pin Female SUB-D Connector X61

Dual-Channel Counter 24 V - Single-Ended

View Pin Signal Comment

1 2

3 4 5 6 7 8 9

10 11 12 13 14 15

GND K0 + Do not connect K1+ Do not connect K2 + Do not connect Do not connect Do not connect Do not connect Do not connect Do not connect Do not connect Do not connect Do not connect

Reference potential Channel N (zero pulse)

Channel A

Channel B

38 Jetter AG

JX2-CNT1 6.7 Dual-Channel Counter

15-Pin Female SUB-D Connector X61

Dual-Channel Counter as 24 V Single-Channel

Counter

View Pin Signal Comment

1 2

3 4 5 6

7 8 9 10 11 12 13 14 15

GND K0 + Do not connect K1+ Do not connect K2 +

Do not connect Do not connect Do not connect Do not connect Do not connect Do not connect Do not connect Do not connect Do not connect

Reference potential Channel N (for zeroing)

Counter input 24 V

Definition of direction: 0 V = positive counting direction 24 V = negative counting direction

Cable Specification

Specifications of Connector (on JX2-CNT1 side)

• 15-pin male SUB-D connector in metallized housing (quality grade 3).

• Diameter of the cable apt for connecting: 0.25 - 0.60 mm

Specifications of Connecting Cable

• Allowed cable length at maximum counting frequency:

- Dual-channel counter 5 V, differential signal: approx. 30 m

- Dual-Channel Counter 24 V, single-ended: approx. 20 m

- Single-channel counter 24 V: approx. 20 m

• Other specifications: see specifications of cables on encoder side

Cable Shielding

• Connect the shield with the greatest possible surface area to the metallized

housing.

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6 Installation Guide JetWeb

6.7.2 Description of Connections - Reference Switch and Strobe Input

Terminal Specifications

• 5-pole terminal block COMBICON RM 5.08 (for printed circuit boards)

• Cable cross-sectional area: 0.25 - 2.5 mm

• Torque (for input plug screws): 0,5 .. 0.6 Nm

• The maximum stripping length for input lines is 7 mm.

• The accepted VDE guidelines must be followed

• Bladed screw-driver: 0.6 x 3.5 x 100 mm

Specifications of Connecting Cable

• Not needed

Cable Shielding

Make sure that the signal lines are shielded (see Fig. 6):

• Clamp the shield with the greatest possible surface area under the grounding

clamp and establish an electroconductive connection with the grounding block.

Terminal Block X21 - Strobe and Reference Switch

Input

Pin Signal Comment

X21.STR

X 21

S 0 V STR 0 V REF INPUT

Fig. 10: Connection of strobe sensor and reference switch to X21

X21.REF

X21.0V

Strobe pulse

Reference signal

0 V

Strobe input: DC 24 V, max. 6 mA

- Low level: up to 2 V

- High level: 20 V ... 30 V

Reference switch: DC 24 V, max. 6 mA

- Low level: up to 2 V

- High level: 20 V ... 30 V

Reference potential for both inputs

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JX2-CNT1 6.7 Dual-Channel Counter

6.7.3 Description of LEDs

Signal LEDs - Dual-Channel Counter

LED Color State Function

REF amber Off Low level of reference switch input

is lit High level of reference switch input

K1 amber Off Low level applied to channel A

(inverted high level applied to channel A)

is lit High level applied to channel A

(inverted low level applied to channel A)

K2 amber Off Low level applied to channel B

(inverted high level applied to channel B)

is lit High level applied to channel B

(inverted low level applied to channel B)

K0 amber Off Low level applied to channel N (zero

pulse) (inverted high level applied to channel N)

is lit High level applied to channel N (zero

pulse) (inverted low level applied to channel N)

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6 Installation Guide JetWeb

6.8 SSI Encoder

X21

S0V STR 0V REF

INPUT

Jetter

ENCODER

JX2-CNT1

REF

X61

6.8.1 Description of Connections

15-Pin Female SUB-D Connector X61

SSI Encoder

View Pin Signal Comment

Reference potential

Data line Inverted data line

Inverted clockline Clockline Power supply for encoders with operating voltage DC 5 V, shortcircuit proof up to 100 mA

Important!

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15

GND Do not connect Do not connect DATA + DATA Do not connect Do not connect CLOCK CLOCK + DC 5 V (-5%)

Do not connect Do not connect Do not connect Do not connect Do not connect

Reversal of CLOCK signals produces invalid position values.

If DATA + and DATA - are reversed, the JX2-CNT1 module reads out the first complement of the binary or Gray-coded encoder value. In the case of Gray-

coding this error has fatal effects: The module fails to produce continuous position values which, therefore, cannot be used. In the case of binary coding

the counting direction is reversed.

42 Jetter AG

JX2-CNT1 6.8 SSI Encoder

Important!

Binary Coding: If DATA + and DATA - are correctly connected to the encoder,

the JX2-CNT1 indicates that the counting direction is reversed compared to the counting direction of the encoder. In order to maintain the original counting direction in JX2-CNT1, the counting direction must be reversed by means of bit 9 in register 3xx3 "Status / Controller".

Cable Specification

Specifications of Connector (on JX2-CNT1 side)

• 15-pin male SUB-D connector in metallized housing (quality grade 3).

• Diameter of the cable apt for connecting: 0.25 - 0.60 mm

Specifications of Connecting Cable

• The maximum cable length depends on the clock frequency:

Clock frequency:

100 kHz max. 400 m

200 kHz max. 200 m

300 kHz max. 100 m

400 kHz max. 50 m

• Other specifications: see specifications of cables on encoder side

Cable Shielding

• Connect the shield with the greatest possible surface area to the metallized housing.

Length:

Important!

X 21

S 0 V STR 0 V REF INPUT

When reading in an SSI encoder, the strobe input X21.STR must be opencircuited. Otherwise errors may occur when reading in the position values from the SSI encoder.

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6 Installation Guide JetWeb

6.9 System Bus

Important!

A detailed description of this topic is given in the User Manual of the controller. Refer to this manual for further information on the system bus, such as cable lengths, baud rate, monitoring functions, etc.

Centralized and

Remote

Arrangement of

Expansion

Modules

The JX2-CNT1 module has been designed for direct or remote connection to the controller. Both types of connection are described in detail below.

6.9.1 Centralized Arrangement on the System Bus

– The centralized arrangement allows up to 5 non-intelligent expansion modules to

be directly connected to the controller. Power supply of these 5 expansion modules is provided by the controller.

– Electrical and mechanical connection is established via SUB-D connector. These

connectors excel by their reliable mechanical and electrical connections, as well as good EMI characteristics.

44 Jetter AG

JX2-CNT1 6.9 System Bus

JC-24x equipped with a maximum of 5 non-intelligent modules

STOP

LOADRUN

ADRESS

HIGH

S31

SER1

SER2

INPUT

MID

S32

LOW

S33

24V

ERR

RUN

Jetter

X 1

JetWeb

1 2 3 4 24 V

JC-246

INPUT

OUTPUT

OUTPUT 5 6 7 8 0 V

X 2

Jetter

JX2-OD8

24 V

X 1

0 V 1 2 3 4 INPUT

INPUT 5 6 7 8 0 V

X 2

Jetter

JX2-ID8

X 1

0 V 1 2 3 4 INPUT

Jetter

JX2-ID8

INPUT 5 6 7 8 0 V

X 2 X 2

1 0 V 2 0 V 24 V ANALOG OUTPUT

ANALOG OUTPUT 3 0 V 4 0 V 0 V

Jetter

JX2-PRN1

Fig. 11: Centralized arrangement on the Jetter System Bus

6.9.2 Remote Arrangement on the System Bus

– Remote modules are located at a certain distance from the controller and JX2

expansion modules directly connected to it.

– Each remote module set is connected to the controller or another remote unit via

system bus cable.

– Each remote module set must be connected to a power supply unit JX2-PS1. One

power supply unit JX2-PS1 is designed for supplying 5 non-intelligent expansion modules.

– The JX2-PS1 modules must be located at the beginning of the remote module set,

so as to meet EMC requirements. This is also true for module sets consisting only of intelligent expansion modules.

– For a remote module set consisting of a mix of intelligent and non-intelligent

expansion modules a JX2-PS1 is required, since intelligent modules are not able to supply non-intelligent modules with current and voltage.

– The remote modules are controlled by the application program as if they were

directly connected to the controller.

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6 Installation Guide JetWeb

JC-24x equipped with 5 non-intelligent modules and several remote module sets

JetControl 24x and modules JX2-PS1 and modules

STOP

LOADRUN

ADRESS

HIGH

S31

SER1

MID

S32

SER2

LOW

S33

24V

ERR

RUN

Jetter

JetWeb

INPUT

JC-246

INPUT

OUTPUT

System

bus

System

bus

System

bus

System

bus

JX2-PS1 and modules JX2-PS1 and modules JX2-PS1 and modules

Fig. 12: Remote Arrangement on the Jetter System Bus

6.9.3 System Bus Cable Specification

Specification of Connector/Socket

Male connector (BUS-OUT side - controller / expansion modules)

• 9-pin male SUB-D connector in metallized housing (quality grade 3).

• Diameter of the cable apt for connecting: 0.25 - 0.60 mm

Female connector (BUS-IN side - JX2-PS1)

• 9-pin female SUB-D connector in metallized housing (quality grade 3).

• Diameter of the cable apt for connecting: 0.25 - 0.60 mm

46 Jetter AG

JX2-CNT1 6.9 System Bus

System Bus Cable Specification

The following minimum requirements apply to the manufacture of the system bus cable:

System Bus Cable - Technical Data

Function Description

Core cross-sectional area

Cable capacitance maximum 60 pF/m

1 MBaud: 0.25 - 0.34 mm

500 kBaud: 0.34 - 0.50 mm

250 kBaud: 0.34 - 0.60 mm

125 kBaud: 0.50 - 0.60 mm

Resistivity 1 MBaud: maximum 70 /km

500 kBaud: maximum 60 /km

250 kBaud: maximum 60 /km

125 kBaud: maximum 60 /km

Number of cores 5

Shield Complete shielding, no paired shielding

Twisting Core pairs CL and CH must be twisted.

Allowed Cable Lengths

Baud Rate Max. cable

length

1 MBaud 30 m 0.3 m 3 m

500 kBaud 100 m 1 m 39 m

250 kBaud 200 m 3 m 78 m

125 kBaud 200 m - -

Max. tap line

length

Max. overall tap

line length

Note!

• The maximum cable length depends on the baud rate used and the number of modules connected to the bus.

• When calculating the maximum line length, please take into account that each module connected to the bus reduces the cable length by approx. 1 m.

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6 Installation Guide JetWeb

Note!

On the BUS OUT side of the system bus cable pins 3 and 5 have to be bridged. For more information refer to the table below.

System Bus Cable - Cable Confection # 530

Shield

BUS-OUT Connect shield with the greatest

possible surface area!

Use metallized housing only!

Pin Signal Pin

1CMODE01

2CL2

3GND3

4CMODE14

5 TERM (not connected) 5

6Unassigned6

7CH7

8Unassigned8

9 Do not connect 9

BUS-IN

Ordering Information

The system bus cable can be purchased from Jetter AG in various lengths. For more information refer to chapter 2.2 "Ordering Information", page 19.

48 Jetter AG

JX2-CNT1 7 Software Programming

7 Software Programming

Virtual outputs and registers are used to parameterize or operate the JX2-CNT1 from the controller.

7.1 Virtual Outputs

The module JX2-CNT1 is treated as I/O expansion module. That is, outputs and the corresponding output numbers are assigned to the JX2-CNT1 module. But, because the JX2-CNT1 has no physical outputs these are refered to as virtual outputs. These virtual outputs can be regarded as flags which can be set or reset to parameterize the JX2-CNT1 (apart from registers).

8 virtual outputs are available.

Appendix A provides a brief overview of these virtual outputs (see Appendix A: "Overview - Outputs", page 97).

7.1.1 Addressing the Virtual Outputs

The address is derived from the module position and the number of the corresponding output.

Note!

Outside this chapter of this manual output numbers are specified only with their last 4 digits.

Addressing in the case of JC-24x / NANO-A/B/C/D controllers:

Output number: xxzz

Meaning:

xxzz

I/O number: 01...08 I/O module number: 02...2

For more information, for example on register overlaying of outputs, refer to the User's Manual supplied with the corresponding controller.

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7.1 Virtual Outputs JetWeb

Addressing in the case of JC-647 controllers equipped with JX6SB(-I), or DELTA controllers with JX6-SB(-I):

Output number: m1xxzz

Meaning:

For more information, for example on register overlaying of outputs, refer to the User's Manual that comes with the JX6-SB(-I) module.

I/O number: 01...08 I/O module number: 02...32

ubmodule socket + 1: 2...4

Addressing in the case of JC-800 controllers equipped with JX6SB(-I):

The IO address starts with the area number 5.

Output number: 53CM xxzz

Meaning:

M2..3 C5

For more information, for example on register overlaying of outputs, refer to the User's Manual supplied with the JC-800 controller.

xxzz

I/O number: 01...08 Module number JX2-I/O: 02...32 System bus module: 1...2 Module board number: 1...3 2: Input

3: Output Area:

Note!

To determine the module number, the digital input or output modules are counted. Intelligent modules, such as JX2-SV1, JX2-SM2, JX2-PID1 modules, etc., located among the digital input and output modules, are not taken into consideration.

Module # 1 is assigned to the basic controller. Starting from there, the module numbers are counted left to right. Basically, the granularity is 16. That means, for example, that 16 outputs are allocated to the JX2-CNT1 module, irrespective of the fact that only 8 virtual outputs can be addressed.

50 Jetter AG

JX2-CNT1 7 Software Programming

Example 1: Configuration consisting of digital input and output modules only

System consisting of the following modules: 1 JC-24x, 2 JX2-IO16 and 1 JX2-CNT1:

Basic

I/O Module

controller

JX2-IO16

JC-24x

Module # 1 Module # 2 Module # 3 Module # 4

Input 101 .. 116

Outputs 101 .. 108

Input

201 .. 208

Output

201 .. 208

Input

301 .. 308

Output

301 .. 308

Input

module

JX2-CNT1

Output

401 .. 408

Example 2: Configuration consisting of one JX2-SV1

System consisting of the following modules: 1 JC-24x, 1 JX2-IO16, 1 JX2-SV1 and 1 JX2-CNT1:

Basic

Module

controller

JC-24x

Non intelligent Module # 1 Module # 2 - Module # 3

Output

module

JX2-IO16

Servo

module

JX2-SV1

Input

module

JX2-CNT1

Intelligent Module # 1 - Module # 2 -

Input 101 .. 116

Outputs 101 .. 108

Input

201 .. 208

Output

201 .. 208

JX2-SV1

Module

! ! !

Output

301 .. 308

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7.2 Register Interface JetWeb

7.2 Register Interface

10 registers are available. These registers are used to parameterize and operate the module.

An overview of registers is included in the appendix. For more information refer to Appendix B: "Overview of Registers", page 100.

7.2.1 Register Addressing

The register address is derived from the module number and the respective register number.

Note!

Outside this chapter of this manual register numbers are specified only with their last 4 digits.

Addressing register numbers in the case of JC-24x / NANO-B/C/D controllers:

The register address always starts with the area number 3.

Meaning:

xxz

X2-I/O module area:

For more information refer to the manual on the corresponding controller.

52 Jetter AG

JX2-CNT1 7 Software Programming

Addressing register numbers in the case of JC-647 and DELTA controllers:

The register address always consists of the area number 3 and the area number 03 for the system bus module.

Meaning:

For more information refer to the User's Manual that comes with the JX6-SB(-I) module.

xxz

Addressing register numbers in the case of JC-800 controllers

The register address always consists of the area number 4 and the area number 03 for the system bus module.

Meaning:

For more information refer to the manual on the JC-800 controller.

xxz

JX2-I/O module area: 03 System bus module: 1...2

Module board number: 1...3

rea: 4

I/O module number 1 is allocated to the controller or the system bus module JX6SB(-I). Starting from there, I/O module numbers are counted left to right. That is, module number 2 is assigned to the first I/O module that follows the controller or the system bus module.

Note!

To determine the I/O module number, only non-intelligent modules are counted, such as JX2-IO16, JX2-ID8, JX2-OD8, etc. Intelligent modules, such as JetMove 2xx, JetMove 6xx, JX2-SV1, JX2--SM2, JX2-PID1, etc., located among the digital input and output modules, are not taken into consideration.

Jetter AG 53

7.2 Register Interface JetWeb

The last four digits are the same for all addresses. The following applies to these digits:

Example 3: Determining Register Numbers

Determinig the register number of the third I/O expansion module connected to a JetControl-246:

I/O module number = 4 Local register number = 9

54 Jetter AG

JX2-CNT1 8 Configuration and Diagnostics

8 Configuration and Diagnostics

8.1 Status and Control Functions

The current state of the JX2-CNT1 can be queried from register 3xx3. This register is also used for enabling/disabling certain functions.

Function Description

Read Current status or control information

Write Setting or resetting the control bits 8-15 and

resetting the status bits 0, 4 and 6

Value range Bit-coded, 16 bits

Value following reset 0b 00000000 00000000

Note!

On write access bits 0, 4 and 6 are automatically reset irrespective of whether the bits of the value to be entered are already set or not.

Status

Meaning of the individual bits:

Bit 0: Dual-channel counter - Strobe status

Indicates whether the count value has been strobed by the dual-channel counter. This value is reset on write access to register 3xx3.

0 = No strobe

1 = Strobe event arrived

Value following reset: 0

Bit 1: Reserved

Bit 2: Reserved

Bit 3: Dual-channel counter - reference status

Indicates whether the dual-counter count value has been zeroed. This value is reset by resetting output xx01.

0 = No zeroing

1 = Zeroing completed

Value following reset: 0

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8.1 Status and Control Functions JetWeb

Meaning of the individual bits (continued):

Bit 4: Dual-channel counter - Strobe overflow status

Indicates whether the JX2-CNT1 has received one more strobe signal before the last strobe message (bit 0 of the given register) has been reset. This value is reset on write access to register 3xx3.

0 = No strobe overflow

1 = Strobe overflow

Value following reset: 0

Bit 5: Reserved

Bit 6: Dual-channel counter - Z track error status

Indicates whether simultaneous change of tracks K1 and K2 or too high a counting frequency or rate has been detected. The latter applies only with the input filter enabled (see register 3xx8 "Filter frequency"). This value is reset on write access to register 3xx3.

0 = No Z track error

1 = Z track error

Value following reset: 0

Bit 7: Reserved

Controller

Meaning of the individual bits:

Bit 8: Reserved

Bit 9: SSI - Reversal of counting direction

Selection of the counting direction for SSI encoder

0 = Counting direction as per transmitted data (this is true for Gray

coding. In the case of binary coding, the counting direction of the JX2-CNT1 module and the SSI encoder is inverted).

1 = Inverted counting direction

Value following reset: 0

Bit 10 bit 11:

Reserved

56 Jetter AG

JX2-CNT1 8 Configuration and Diagnostics

Meaning of the individual bits (continued):

Bit 12: Frequency display - Activation

Is for enabling/disabling the frequency display of the dual-channel counter or SSI encoder via register 3xx7 "Parity error counter / Frequency display"

0 = The SSI parity error counter is displayed in register 3xx7

The offset of dual-channel counter is displayed in register 3xx1

1 = The frequency is displayed in register 3xx7

The time base for frequency measurement is displayed in register 3xx1

Value following reset: 0

Bit 13: Reserved

Bit 14: Master mode - Selection

Is for selecting the master mode which is used to output the counter value in register 3xx0 on the system bus.

0 = Mode 1: Operation along with JX2-SV1 or CAN-DIMA

1 = Mode 2: Operation in synchronous mode (JetMove 2xx, JetMove

D203, JetMove 105)

Bit 15: Reserved

8.2 Firmware Version

Function Description

Read Version number of the operating system

e.g. 101 = V 1.01

Write Illegal

Value range 0 ... 8.388.607

Value following reset Version number of the operating system

Note!

Please state this number when making technical inquiries.

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8.2 Firmware Version JetWeb

58 Jetter AG

JX2-CNT1 9 Single-Channel Counter

9 Single-Channel Counter

For technical information on the single-channel counter refer to "Technical Data" in chapter 5 "Technical Data", page 27. For information on how to install the singlechannel counter refer to chapter 6.6 "Single-Channel Counter", page 35.

The single-channel counter is always active. The count value of the single-channel counter can be seen from register 3xx4 "Single-channel counter - count value". The count value is incremented or decremented whenever the edge of the counting signal rises. It is not possible to change this setting.

Note!

The counting direction is set via virtual output xx05 of the JX2-CNT1 module.

Function Description

Read Present count value

Write Defining the new count value

Value range - 8,388,608 ... + 8,388,607 [pulses]

Value following reset 0

The count value can be changed by manually entering a value into register 3xx4.

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JetWeb

60 Jetter AG

JX2-CNT1 10 Dual-Channel Counter

10 Dual-Channel Counter

The dual-channel counter is for reading in signals from incremental encoders. In doing so, the signal is subject to quadruple evaluation, that is, all 4 edges of both signals K1 and K2 are counted. The dual-channel can also be used as singlechannel counter with 24 V signal level. For more information on this refer to “DualChannel Counter as Single-Channel Counter" on page 62. For technical information on the dual-channel counter refer to "Technical Data" in chapter 5 "Technical Data", page 27. For information on how to connect the different counter signals to the dualchannel counter refer to chapter 6.7 "Dual-Channel Counter", page 37.

The dual-channel counter is enabled if virtual output xx04 "Encoder selection" is reset. This is the default setting.

Furthermore, the count value of the dual-channel counter can be zeroed by means of a reference switch and the K0 signal of an incremental encoder. The strobe function is used to save the count value at the time when the strobe signal was issued (capture function).

The built-in digital filter is for filtering out interfering frequencies out of the useful signal. The digital filter is disabled by default.

10.1 Reversal of Counting Direction

If the dual-channel counter is used along with incremental encoders, the counting direction depends on the wiring of the K1 and K2 signals. To reverse the counting direction, signals K1 and K2 must be reversed.

10.2 Count Value

The count value of the dual-channel counter can be seen in register 3xx4 "Count value".

Output xx04 = 0

Function Description

Read Maximum count of dual-channel counter

Write New count of dual-channel counter

Value range - 8.388.608 ... + 8,388,607 [increments]

Value following reset 0

The count value can be changed by manually entering a value into register 3xx0, for example zero to reset the count to zero.

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10.3 Dual-Channel Counter as Single-Channel Counter JetWeb

The count value consists of the following elements:

R3xx0 (count) = internal count + R3xx1 (reference position offset)

Note!

By writing a value into register 3xx0, exact referencing of the position value from the incremental encoder cannot be achieved. Significant position inaccuracies may occur if a reference position is written into the register, for example, when the encoder moves while the value is written into the register.

Exact referencing of the incremental encoder position can be achieved if the referencing function is used along with register 3xx1 "Offset value". For more information refer to chapter 10.4 "Referencing", page 64.

10.3 Dual-Channel Counter as Single-Channel Counter

It is possible to operate the dual-channel counter as single-channel counter. To do so, virtual output xx02 "Counter type" of the JX2-CNT1 module must be set = singlechannel counter. For information on how to install the single-channel counter refer to chapter 6.7.1 "Description of Connections - Encoder Signals", page 37.

The counting direction depends on the level of the K2 signal. For more information refer to Fig. 13. The count value is incremented or decremented at every positive edge of the counting channel K1. The count value of the single-channel counter can be seen from register 3xx0 "Count value", or it can be changed there manually.

62 Jetter AG

JX2-CNT1 10 Dual-Channel Counter

Fig. 13: Signal waveform for single-channel counting

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10.4 Referencing JetWeb

10.4 Referencing

There are two possible ways for referencing an incremental encoder position:

• relatively coarse referencing: by directly entering the value into register 3xx0

"Count value"

• exact referencing: by means of the reference signal (reference switch) and the K0

pulse from of the incremental encoder (recommended).

This subchapter describes the exact referencing process. For exact referencing proceed as follows:

• Set reference position

• Define reference offset (if needed)

10.4.1 Setting the Reference Position

To determine the reference position use the built-in referencing function. This function is enabled via virtual output xx01 "Signal activation" of the JX2-CNT1 module. To enable referencing, this output is to be set by the user = STR disabled / REF enabled. If this output has already been set, for example due to a previous referencing, it must be reset first. The referencing function sets the count value in register 3xx0 to zero if the following condition is fulfilled:

R3xx0 (count value) = 0 if:

• K0 (zero pulse of the incremental encoder) = 1

AND

• REF (reference switch) = 0

Please also refer to Fig. 14.

Bit 3 "Dual-channel counter - reference status" in register 3xx3 "Status / Controller" shows whether the referencing function is active or completed. It the bit is set, referencing is completed. Once output xx01 is reset, bit 3 is reset, too.

Note!

For referencing, the low-level state of the REF input is decisive, that is, on enabling the reference function, the system will not wait for a negative edge event when the REF input is already on low level. If no reference switch is connected

to the module, the REF input is on low level by default.

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JX2-CNT1 10 Dual-Channel Counter

Fig. 14: Signal waveform for referencing

10.4.2 Setting the Reference Offset

The count value of the dual-channel counter (register 3xx0) is zeroed using the reference function. This way, the reference position is set to position 0 (refer to “Setting the Reference Position" on page 64). Register 3xx1 "Dual-channel counter

- Offset" can be used to define any position as reference position (refer to “Reference Offset" on page 66). In this connection, the previously determined reference position of the mechanical system is maintained.

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10.5 Reference Offset JetWeb

10.5 Reference Offset

The offset in register 3xx1 "Dual-channel counter - Offset" can be used to shift the count value in register 3xx0 into positive or negative direction. This way, the reference position is shifted accordingly. In doing so, the reference position of the mechanical system remains unchanged.

Status bit 12 = 0

Function Description

Read Actual reference position offset of the dual-channel

counter

Write New reference position offset of the dual-channel

counter

Value range - 8.388.608 ... + 8,388,607 [increments]

Value following reset 0

The reference position offset has the following effect on register 3xx0 "Count value":

R3xx0 (count) = internal count + R3xx1 (reference position offset)

Example

The count value of the dual-channel counter is zeroed using the reference function (register 3xx0 = 0). Via offset register 3xx1 the reference position is to be set to 10,000 increments.

– The user enters 10,000 into register 3xx1. – The count value is set to 10,000 increments, or to a value around 10,000 if the

incremental encoder has moved during this process or is between 2 PPR counts and is permanently oscillating.

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JX2-CNT1 10 Dual-Channel Counter

10.6 Digital Filter

The dual-channel counter features a digital filter. This filter can also be used if the dual-channel counter is operated as single-channel counter. The digital filter filters higher-frequency disturbance signals out of the input signals to ensure that they are not counted. The filter is disabled by default. To activate the filter, specify a fundamental frequency in register 3xx8 "Dual-channel counter - Filter frequency". By doing so, all signals ≤ the fundamental frequency are taken into account and all signals > the fundamental frequency are filtered out and ignored by the counter.

frequency

Function Description

Read Actual fundamental frequency f

channel counter

Write New fundamental frequency f

counter

Value range 0:

192: 448:

32.704

Value following reset 0

The fundamental frequency is not directly entered into register 3xx8. Rather, a value is entered which corresponds to a fundamental frequency. The value corresponding to the desired fundamental frequency is calculated by the following formula:

4000000

⎛⎞

---------------------1–

⎝⎠

fund

Filtering function disabled

= 1 MHz

fund

= 500 kHz

fund

...

... f

= 7,812.5 Hz

fund

64× at f

of the dual-

fund

of the dual-channel

fund

in Hz=

fund

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10.7 Strobe Function JetWeb

10.7 Strobe Function

The strobe function is for storing the actual count value to register 3xx0 because of an external hardware pulse, the so-called strobe signal. The count value is stored once the edge of the strobe signal rises, and can be read out of register 3xx2 "Dualchannel counter - strobe value".

The JX2-CNT1 hardware directly issues the strobe signal and stores the count value. With digital filter disabled, the sampling time is >10 µs. This means that within 10 µs after a rising edge arrives at terminal X21.STR the current count value is stored. If the filter is enabled, the sampling time extends by one cycle of the fundamental frequency set for the filter.

The strobe function is enabled if virtual output xx01 "Signal activation" of the JX2CNT1 module is reset (0 = STR enabled / REF disabled). If this is the case, the count value is stored every time the edge of the strobe signal rises. Bit 0 "Dual-channel counter - strobe status" in register 3xx3 "Status / Controller" shows whether a strobe signal has been issued and the count value in register 3xx2 is valid. If bit 0 equals to 1, a strobe event has occurred, and the stored count value can be read out of register 3xx2.

Bit 0 remains set until it is reset by the user by entering a value into register 3xx3 "Status / Controller". If a strobe event is received before bit 0 is reset, bit 4 "Dualchannel counter - strobe overflow status" in register 3xx3 is set additionally. Bit 4 is not reset until a value is entered into register 3xx3.

Function Description

Read Actual count value or value that has been stored last

Write Illegal

Value range - 8.388.608 ... + 8,388,607 [increments]

Value following reset 0

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JX2-CNT1 11 SSI Absolute Encoder

11 SSI Absolute Encoder

JX2-CNT1 modules are able to read in SSI absolute encoder signals (SSI = Synchronous Serial Interface) with a resolution of 10 - 24 bits in various data formats. For more information refer to “Reading in SSI data" on page 69. Signal decoding for Gray or binary code is available. Automatic parity check of data transmission is also available if the encoder sends a parity bit.

For technical information on the SSI interface refer to "Technical Data" in chapter 5 "Technical Data", page 27. For information on installation refer to chapter 6.8 "SSI Encoder", page 42.

11.1 Reading in SSI data

The following subchapters first introduce the data formats prevailing in the market. Then, this manual explains which data formats can be read by the JX2-CNT1 and how they are read in.

The position value which has been read in can be seen from register 3xx0 "Count value".

Output xx04 = 1

Function Description

Read Actual count value of the SSI encoder

Write Illegal

Value range Depending on the position resolution of the encoder

Value following reset 0

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11.1 Reading in SSI data JetWeb

11.1.1 Standard Format

In standard format, the position bits do not include leading or trailing zeroes. However, special bits or a parity bit may be included directly after the position bits.

Fig. 15: SSI Standard Format

11.1.2 Fir-Tree Format

In the fir-tree format all position resolutions are output always with the same number of clocks. There is a center line (for example between clock 12 and 13) which divides the resolution into number of revolutions (to the left of the center line) and steps per revolution (to the right of the center line). If less than 12 bits are needed for the number of revolutions, unused places are filled with leading zeroes up to the required length of 12 bits. On the other hand, if less than 12 bits are needed for the number of steps per revolution, unused places are filled with trailing zeroes up to the required length of 12 bits. Here, special bits or a parity bit can be added, as well. However, only after the zero bits which have been added to reach the required length, for example, starting from clock 25.

Fig. 16: SSI - Fir-Tree Format

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11.1.3 Left- and Right-Justified Data Format

In the case of left- or right justified data format, there are leading and trailing zero bits like in the case of fir-tree format. However, the position bits can be placed at any location within the maximum clock number. Leading or trailing zero bits required to reach the maximum clock number are inserted around the position bits. Here, special bits or a parity bit can be added, as well. They can be placed directly after the position bits or after the trailing zero bits.

Fig. 17: SSI - Left- or right justified data format

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11.1 Reading in SSI data JetWeb

11.1.4 Reading-In Data Formats

The JX2-CNT1 module is able to output a maximum of 31 clocks. If the encoder attaches a parity bit at the end of data transmission, the parity evaluation implemented in JX2-CNT1 can check the parity. The attached parity bit is automatically separated from the position bits and not taken into account when creating the position value.

Certain SSI encoders also insert special bits into the data stream after the position bits. These special bits may contain, for example, information on the encoder status. These bits are not evaluated by the JX2-CNT1 module. Together with the position bits, the special bits are stored to the position value (register 3xx0). The user must arrange for their evaluation by means of the application program as follows:

• Masked reading of the special bits

• Shifting the position value to the right (as often as there were special bits)

• Evaluating the special bits

The 12 examples below describe the different SSI formats with different data streams for a 10-bit position resolution. An illustration of these examples is given in Fig. 18. The examples apply to both types of signal coding (Gray and binary coding).

Example 1

In this example, 10 position bits in usual standard format are read. As number of clocks the value 10 must be entered. The encoder does not transmit a parity bit, therefore, parity check must be disabled. Position range displayed in register 3xx0: 0 ... 1023 (in steps of 1).

Example 2

Like example 1, but with one additional clock as the encoder sends a parity bit. Parity check is enabled. The parity bit is not taken into account when calculating the position.

Example 3

Like example 2, however with parity check disabled. The parity bit is taken into account when calculating the position and is incorporated into the position value as least significant bit. The user must arrange for parity check in the application program by programming masked reading and restoring the original position value as a result of a right shift by one place.

Example 4

Like example 1, however with parity check enabled irrespective of the fact that no parity bit has been sent. This results in the least significant of the position bits being used for parity check while not being taken into account for calculating the position value which causes parity errors. In the case of a parity error, the position value contained in register 3xx0 is not updated. Therefore, this configuration is not allowed.

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Example 5

Like example 1. But the encoder appends 3 special bits after the position bits. Therefore, 13 clocks are required. The special bits are taken into account when the position value is evaluated. The user must arrange for separation of special bits from the position value in the application program by programming masked reading and restoring the original position value as a result of right shift by the corresponding number of places.

Example 6

In this example, 10 position bits are transmitted right-justified with a rate of 25 clocks. The leading zero bits entered into register 3xx0 have no effect on the transmitted position value. Even deletion of the most significant bit, which has been read in cycle 1, has not effect on the position value. Position range displayed in register 3xx0: 0 ... 1023 (in steps of 1).

Example 7

Like example 6, however with parity bit and parity check enabled.

Example 8

In this example, 10 position bits are read out left-justified with a rate of 25 clocks. Instead of placing the zero bits before the position bits, like in example 6, they are appended after the position bits. This results in a significant change in the position range, as the 10 position bits are shifted to the left by several binary places (depending on the number of inserted zero bits). As the value has been read out at 25 clocks and only the lowest 24 bits can be taken over, the highest bit, which has been read out in clock 1, gets lost. Position range displayed in register 3xx0: -

8.388.608 ... + 8,388,607 in steps of 32,768. However, it is also possible to reduce the number of clocks, and to do without reading out the trailing zero bits. Thus, the position values remains at the correkt binary location.

Example 9

Like example 8, however with 2 special bits appended. To evaluate the data proceed according to example 5.

Example 10

In this example, 10 position bits are read out in fir-tree format with 24 clocks. The leading zero bits do not have an effect on the position value. But the appended zero bits shift the position bits upwards by several binary places, like in example 8. This has an significant effect on the position range. Position range displayed in register 3xx0: - 32.768 ... + 32,767 in steps of 128. However, it is also possible to reduce the number of clocks, and to do without reading out the trailing zero bits. Thus, the position values remains at the correkt binary location.

Example 11

Like example 10, but with one additional clock due to the parity bit and parity check.

Example 12

Like example 11, however without parity check, Furthermore, a special bit is sent instead of the parity bit. Due to the 25 clocks, the zero bit, which has been read out in cycle 1, is not taken into account when generating the position value. However, the special bit is included in the position value. To separate the special bit from the position value proceed according to example 5.

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11.1 Reading in SSI data JetWeb

Fig. 18: Examples - Reading in Different SSI Formats

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JX2-CNT1 11 SSI Absolute Encoder

11.2 Configuration

Configuration Steps

• Define the clock number and rate using register 3xx6 "SSI Configuration".

• Define the signal coding using virtual ouput xx06 "Signal Coding".

• Define the type of parity using virtual output xx08 "Parity Settings" if a parity bit is included in the data stream.

• Enable parity check using virtual output xx07 "Enable Parity Check" if a parity bit is included in the data stream.

• Enable the SSI function using virtual ouput xx04 "Encoder Selection".

11.2.1 Number and Rate of Clocks

The number of clocks and the clock rate is set in register 3xx6 "SSI Configuration". The number of clocks depends on the position resolution and the output format of the related SSI encoder. For more information refer to “Reading in SSI data" on page 69. The clock frequency depends on the length of the encoder cable. For more information refer to chapter 6.8 "SSI Encoder", page 42.

Function Description

Read Actual configuration value of the SSI encoder

Write New configuration value of the SSI encoder

Value range 0 = No SSI encoder connected

21.464 ... 65,535 (see below)

Value following reset 0

Note!

Register 3xx6 is automatically set to 0 if the SSI function is not enabled (virtual output xx04 "Encoder Selection" is not set = dual-channel encoder is enabled) and values are entered into register 3xx0.

The value of register 3xx6 (number of clocks and clock rate) is calculated by the formulas given in the following table. In this table, configuration values for clock rates of 100 kHz and 200 kHz along with the most common clock numbers are listed:

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11.2 Configuration JetWeb

Configuration Values

Number of

Clocks

10 1,543 21,503

11 23,591 23,551

12 25,639 25,599

13 27,687 27,647

14 29,735 29,695

15 31,783 31,743

16 33,831 33,791

17 35,879 35,839

18 37,927 37,887

19 39,975 39,935

20 42,023 41,983

21 44,071 44,031

22 46,119 46,079

100 kHz 200 kHz

23 48,167 48,127

24 50,215 50,175

25* 52,263 52,223

* Mainly for SSI encoders with a position resolution of 24 bits and parity bit.

Calculation Formula:

Number of clocks - value range: 10 ... 31 Clock rate - value range: 100 kHz ... 8 Mhz

A = (((number of clocks + 1) x 2) - 1) x 1024 B = (16.000.000 / (clock rate x 2)) - 41

Example

An SSI encoder is to be read out at a clock rate of 200 kHz and 20 clocks.

A = (((20 + 1) x 2) - 1) x 1024 = 41,984 B = (16,000,000 / (200,000 x 2)) - 41 = -1

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JX2-CNT1 11 SSI Absolute Encoder

11.3 Reversal of Counting Direction

The counting direction for SSI position values can be reversed by means of bit 9 "SSI

- Reversal of counting direction" in register 3xx3 "Status / Controller". For more

information refer to chapter 8.1 "Status and Control Functions", page 55.

Important!

Binary Coding: If DATA + and DATA - are correctly connected to the encoder,

11.4 Parity Check

The JX2-CNT1 is able to perform automatic parity checks. For correct parity checks the following requirements have to be fulfilled:

• Parity check must be set correctly (even or odd parity)

• Parity check must be enabled

• The number of clocks must be set correctly

• The connected SSI encoder must include one parity bit at the end of the data stream.

For more information on setting and enabling parity check please refer to “Configuration" on page 75. For information on how to set the correct number of clocks refer to “Reading in SSI data" on page 69. If the SSI encoder provides a parity bit in the data stream, this bit must be taken into account when specifying the number of clocks in register 3xx6 "SSI configuration". That is, if, for example, the encoder provides 24 position bits and one parity bit, the number of clocks must be set to 25 bits.

If the SSI encoder performs parity evaluation can be seen from the manual that comes with the encoder.

If the JX2-CNT 1 module detects a parity error, the position value received is ignored (register 3xx0 "Count value" is not updated) and register 3xx7 "Counter of SSI parity errors" is incremented.

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11.5 Reference Offset JetWeb

Status bit 12 = 0

Function Description

Read Actual number of parity errors

Write Start value of parity error count

Value range - 8.388.608 ... + 8.388.607

Value following reset 0

The parity error counter can be set to zero manually by entering zero into register 3xx7. To set this register to any other "initial value" enter this value into it.

11.5 Reference Offset

The reference offset feature in register 3xx1 "Dual-channel counter - Offset" can only be used with SSI encoders which meet the following requirements:

• 24-bit position resolution

• no special bits or parity bits in the data stream

Note!

If the counting direction is reversed by means of bit 9, the reference offset must be entered into register 3xx1 only after bit 9 has been set.

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JX2-CNT1 12 Frequency Measurement

12 Frequency Measurement

Frequency measurements are carried out by means of the count value in register 3xx0. This measurement is always carried out in the background. The frequency value can be read out at any time. The frequency value is used for calculating the speed (RPM). The frequency measurement is carried out for both the dual-channel counter (incremental encoder), and the SSI encoder.

The frequency value indicates the number of increments captured during a time interval (time between 2 measurements). The duration of the time interval is set by means of the time base value (see formula below).

The frequency value is displayed in register 3xx7 "Frequency - Display" and the time base is set in register 3xx1 "Frequency - Time base". Both registers have got a double function: Register 3xx7 is used to read or write the SSI parity error counter and register 3xx1 is used to read or write the dual-channel offset. The function of these two registers is set by means of bit 12 in register 3xx3 "Status / Controller":

Bit 12 = 0:

Bit 12 = 1:

The frequency value is calculated as follows:

Count

–

n1–

Count value

n-1

Count

is captured later by the value of register 3xx1 x 10 ms than count value

------------------------- ----------------------------- ---= Register 3xx1 10 ms×

Status bit 12 = 1

Function Description

Read Present frequency value (for dual-channel counter

or SSI encoder)

Write Illegal

Value range - 8,388,608 ... + 8,388,607 [increments / time

interval]

Value following reset 0

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12.1 Sample Program JetWeb

Status bit 12 = 1

Function Description

Read Present time interval of frequency measurement

Write New time interval

Value range 1 ... 255 [10 ms]

Value following reset 10 (= 100 ms)

The time interval is set to a multiple of 10 ms via time base. For value 1 this means that the number of increments which have been counted within 10 ms are displayed as frequency value.

12.1 Sample Program

The speed of an SSI encoder is to be measured by a JX2-CNT1 which is located at the first I/O position after the basic device. This encoder has a position resolution of 4096 increments. The time interval for frequency measurements is set to 1 second. This makes the readings more stable as minor fluctuations in frequency measurements will have no great impact.

JetSym - Symbol Listing

********** Registers *************

rmStatusControl 3003 ; Status / Controller

rmFrequency 3007 ; Frequency value

rmTimeBase 3001 ; Frequency - time base

rRPM 100 ; Speed in RPM

;********** Bit Symbols *************

nbSelectFrequency 12 ;;Bit for selecting the

frequency display

JetSym - Program Listing

...

; +++ Frequency Measurement Initialization +++

BIT_SET (rmStatusControl, nbSelectFrequency)

REGISTER_LOAD (rmTimeBase, 100) ; time interval to 1 s

BIT_CLEAR (rmStatusControl, nbSelectFrequency)

...

; +++ Speed Calculation ++++ ; +++ is executed at regular intervals +++

BIT_SET (rmStatusControl, nbSelectFrequency)

REG rRPM = REG rmFrequency * 60 / 4096

BIT_CLEAR (rmStatusControl, nbSelectFrequency)

...

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JetSym ST - Program Listing

//***** Declaration of Variables **************************************

VAR

// Register

nmFrequency: INT AT %VL 3007; // Frequency value

nmTimeBase: INT AT %VL 3001; // Frequency - time

base

nRPM: INT AT %VL 100; // Speed in RPM

// Register bits

bnSelectFrequency: BOOL AT %VL

3003.12;

END_VAR;

//***** Program ******************************************************

...

// +++ Frequency Measurement Initialization +++

bnSelectFrequency:= TRUE;

nmTimeBase:= 100; ////Time interval to 1

bnSelectFrequency:= FALSE;

...

// +++ Speed calculation - is executed at regular intervals +++

bnSelectFrequency:= TRUE;

nRPM:= nmFrequency * 60 / 4096;

bnSelectFrequency:= FALSE;

...

////Bit for selecting

the frequency display

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12.1 Sample Program JetWeb

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JX2-CNT1 13 Master-Slave Operation

13 Master-Slave Operation

Introduction A relatively common task in industrial automation is the coupling of axes to

achieve a coordinated motion. Such a mode of operation is called technological function.

Definition Technological Function

Examples The following functions are technological functions:

JX2-CNT1 as Master Axis in Technological Functions

Important!

Two Modes The JX2-CNT1 module can be operated in two different master/slave modes:

A technological function is a motion function where individual axes are moved dependent on each other. There is one master axis and one or more slave axes. The technological function determines at any given moment how the slave axes move with respect to the master axis.

• Electronic gearbox

•Cam disc

• Flying saw

JX2-CNT1 can be used as master axis for technological functions. The count value of the dual-channel counter or SSI encoder can be transmitted as master axis position for master/slave operation to one or more Jetter axis modules via system bus.

If JX2-CNT1 is operated in master/slave operation and one or more slave axes are coupled in, changes relating to the count value made by the user may have negative effects on the slave axes. For example, entering a value into register 3xx0 which significantly changes the count value causes the slave axis to jerk.

• Mode 1: Master/slave operation along with JX2-SV1 axis modules, or CANDIMA drive control modules

• Mode 2: Master/slave operation along with JM-2xx drive control modules

The JX2-CNT1 module can be operated only in one mode at a time. However, both modes can be active on the system bus at the same time (one JX2-CNT1 in mode 1 and one JX2-CNT1 in mode 2). The modes are configured in different ways.

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13.1 Mode 1 - Operation along with JX2-SV1, etc. JetWeb

13.1 Mode 1 - Operation along with JX2-SV1, etc.

Introduction In mode 1 of master/slave operation, the JX2-CNT 1 module can be used as

master axis in a servo control system for JX2 axis modules (such as JX2-SV1, JX2-SM2, etc.), as well as for drive control modules of the CAN-DIMA series.

Operating Principle

Further Information

Function Plan Configuration

Between two position scans, the module sends its position and time (as time stamp) onto the system bus. The axis modules, which are to follow this JX2-CNT1, will do this with a fixed or variable (table mode) transmission ratio as to position. Position and speed of the master axis can be seen from registers 1x195 and 1x196 on the axis module or drive control module.

For detailed information on the functioning of master/slave operation in mode 1 and on the configuration of the axis module or drive control module for operation along with JX2-CNT1 refer to the following manual: "candima_user's_manual_editon_1_0.pdf", chapter "Functioning Principle of the Follower".

The function plan below shows the registers, which are required for configuring the JX2-CNT1 as master axis in mode 1, as well as their functions.

Transmission rate

Actual position

Count value

R3xx0

R3xx5

Mode 1: JX2-SV1, CAN-DIMA

Mode 2: JetMove

R3xx3

Output of

master position

Oxx03

System bus interface

Status / Controller

Configuration

Below the steps are listed to configure a JX2-CNT1 as master axis in mode 1:

Steps

Step Action

1 Select master/slave mode 1 on the JX2-CNT1.

Procedure: Delete bit 14 "Master Mode - Selection" in register 3xx3 "Status / Controller"

2 Define the transmission rate.

Procedure: Enter the desired value into register 3xx5 "Transmission Rate - Actual Position" (see overleaf). Recommendation: 1 ms

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JX2-CNT1 13 Master-Slave Operation

3 Enable the master position to be output onto the system bus.

Procedure: Set virtual ouput xx003 "Master Position Output".

Status bit 14 = 0

Function Description

Read Present transmission rate for "Actual Position"

Write New transmission rate

Value range 0 ... 5 [ms] (0 = approx. 250 µs)

Value following reset 0 (= approx. 250 µs)

Register 3xx5 "Transmission Rate - Actual Position" defines the transmission rate, thus, the bus load. If register 3xx5 = 0, the JX2-CNT1 sends the actual position after each position scan, i.e. every 250 µs. In normal operating mode, such a high transmission rate is not required for follower control. Therefore, we recommend to set

the transmission rate to at least 1 ms.

Sample Program A JX2-CNT1module which is located at the first I/O position after the basic device

is to be used as master axis.

JetSym - Symbol Listing

********** Registers *************

rmStatusControl 3003 ; Status / Controller

rmSendRate 3005 ; Transmission rate

;********** Bit Symbols *************

nbSelectMS_Modus2 14 ;;Bit for selecting master/

slave operation

;********** Output Symbols *************

oSendMasterPos 203 ; Virtual output xx03

JetSym - Program Listing

...

;+++ Initializing Master/Slave Operation in Mode 1 +++

BIT_CLEAR (rmStatusControl, nbSelectMS_Modus2) ; if set

REGISTER_LOAD (rmSendRate, 1) ;

OUT oSendMasterPos

...

Transmission rate = 1 ms

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13.1 Mode 1 - Operation along with JX2-SV1, etc. JetWeb

JetSym ST - Program Listing

//***** Declaration of Variables **************************************

VAR

// Registers

nmSendRate: INT AT %VL 3005; // Transmission rate

// Register Bits

bnSelectMS_Modus2: BOOL AT %VL 3003.14; ////Bit for selecting

master/slave operation

// Outputs

boSendMasterPos: BOOL AT %QX 203; ////Virtual output xx03

END_VAR;

//***** Program *****************************************************

...

// +++ Initializing Master/Slave Operation in Mode 1 +++

bnSelectMS_Modus2:= FALSE; // if set

nmSendRate:= 1; //

boSendMasterPos:= TRUE;

...

Transmission rate = 1 ms

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JX2-CNT1 13 Master-Slave Operation

aster axis

13.2 Mode 2 - Operation along with JM-2xx

JX2-CNT1 as master, as well as Time Master

Only 1 JX2-CNT1 per System Bus

Further Information

Function Plan Configuration

In mode 2 of master/slave operation, the JX2-CNT 1 module can be used as master axis in a technology group along with a JM-2xx drive control module.

Once the JX2-CNT1 has been configured as master axis in mode 2, it is automatically configured as Time Master for synchronizing the system bus. This condition cannot be changed.

Only one JX2-CNT1 module is allowed as master axis in mode 2 on the system bus. Reason: Only one Time Master is allowed to exist on the system bus. As the JX2CNT1 module automatically acts as Time Master if configured as master axis, another JX2-CNT1 module acting as master axis would break this rule. If you require an additional master axis for another technology group, you must use a JM-2xx as second master axis.

For detailed information on configuration and operation of master/slave systems based on JM-2xx modules refer to the following manual: "jm2xx_at_jetcontrol_bi_xxxx_user_information.pdf", chapter "Technology Functions".

The function plan below shows the registers, which are required for configuring the JX2-CNT1 as master axis in mode 2, as well as their functions.

ransmission rate Actual position

Count value

R3xx0

R3xx5

Mode 1: JX2-SV1, CAN-DIMA

Mode 2: JetMove

R3xx5

Number of m

Status / Controller

R3xx3

Output of

master position

Oxx03

System bus interface

Configuration

Below the steps are listed to configure a JX2-CNT1 as master axis in mode 2:

Steps

Step Action

1 Select master/slave mode 2 on the JX2-CNT1.

Procedure: Set bit 14 "Master Mode - Selection" in register 3xx3 "Status / Controller"

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13.2 Mode 2 - Operation along with JM-2xx JetWeb

2 Define the master axis number.

Procedure: Enter the corresponding number into register 3xx5 "Master Axis Number".

3 Enable the master position to be output onto the system bus.

Procedure: Set virtual ouput xx003 "Master Position Output".

Status bit 14 = 1

Function Description

Read Actual master axis number

Write New master axis number

Value range 0; 1 ... 2

In the case of 0 sending is disabled even if virtual output xx03 is set.

Value following reset 0

SampleProgram A JX2-CNT1module which is located at the first I/O position after the basic device

is to be used as master axis with master axis number 1.

JetSym - Symbol Listing

********** Registers *************

rmStatusControl 3003 ; Status / Controller

rmMasternumber 3005 ; Master number

;********** Bit Symbols *************

nbSelectMS_Modus2 14 ;;Bit for selecting master/

slave operation

;********** Output Symbols *************

oSendMasterPos 203 ; Virtual output xx03

JetSym - Program Listing

...

;+++ Initializing Master/Slave Operation in Mode 2 +++

BIT_SET (rmStatusControl, nbSelectMS_Modus2)

REGISTER_LOAD (rmMasternumber, 1) ; Master number = 1

OUT oSendMasterPos

...

JetSym ST - Program Listing

//***** Declaration of Variables **************************************

VAR

// Register

92 Jetter AG

JX2-CNT1 13 Master-Slave Operation

nmMasternumber: INT AT %VL 3005; // Master number

// Register bits

bnSelectMS_Modus2: BOOL AT %VL 3003.14; ////Bit for selecting

master/slave operation

// Outputs

boSendMasterPos: BOOL AT %QX 203; ////Virtual output xx03

END_VAR;

//***** Program *****************************************************

...

// +++ Initializing Master/Slave Operation in Mode 2 +++

bnSelectMS_Modus2:= TRUE;

nmMasternumber:= 1; // Master number = 1

boSendMasterPos:= TRUE;

...

Jetter AG 93

13.2 Mode 2 - Operation along with JM-2xx JetWeb

94 Jetter AG

JX2-CNT1 Appendices

Appendix

Jetter AG 95

Appendices JetWeb

96 Jetter AG

JX2-CNT1 Appendices

List of Appendices Appendix A: Overview - Outputs

The JX2-CNT1 module provides 8 virtual outputs enabling parameterization via controller. A reset will clear all outputs.

Output

Number

xx05 Counting Direction 1) Counting up

0 = counting up 1 = counting down

xx03 Output of Master Position 1) Output of master position disabled

0 = output of master position disabled 1 = output of master position on the system bus enabled

xx04 Encoder Selection 1) Dual-channel counter enabled

0 = dual-channel counter enabled 1 = SSI encoder enabled

xx01 Signal Activation 1) STR enabled / REF disabled

Name 1) Default value

2) Cross reference

Single-channel counter

2) Page 59

Dual-channel counter + SSI encoder

2) Page 87

2) Page 75, Page 61

Dual-Channel Counter

2) Page 64

0 = STR enabled / REF disabled 1 = STR disabled / REF enabled STR -> strobe function; REF -> reference function

(When this bit is set to 1, bit 3 in register 3xx3 "Status / Controller" is reset automatically)

xx02 Counter Type 1) Dual-channel counter

2) Page 62

0 = dual-channel counter 1 = single-channel counter

SSI Encoder

xx06 Signal Coding 1) Gray code

2) Page 75

0 = Gray code 1 = binary code

xx07 Activation of Parity Check 1) Parity check disabled

2) Page 75

0 = parity check disabled 1 = parity check enabled

Jetter AG 97

Appendices JetWeb

Output

Number

xx08 Parity Settings 1) odd parity

0 = odd parity 1 = even parity

Name 1) Default value

2) Cross reference

2) Page 75

98 Jetter AG

JX2-CNT1 Appendices

Jetter AG 99

Appendices JetWeb

Appendix B:Overview of Registers

The JX2-CNT1 module provides 10 registers for communication with the CPU.

In column "R/W", the type of access to a register is specified:

R=Read

W=Write

Number

3xx0 Output xx04 = 0

3xx0 Output xx04 = 1

3xx1 Status bit 12 = 0

3xx1 Status bit 12 = 1

3xx2 Dual-channel counter -

3xx3 Status / Controller R/W1) bit-oriented, 16 bits

Count value (dual-channel counter)

Count value (SSI Encoder)

Dual-channel counter offset

Frequency - time base R/W1) 1 ... 255

strobe value

Name R/W1) Value Range

2) Default value

3) Cross reference

R/W1) - 8,388,608 ... + 8,388,607

2) 0

3) Page 61

R 1) Depending on position

resolution

2) 0

3) Page 69

R/W1) - 8,388,608 ... + 8,388,607

2) 0

3) Page 66

2) 10

3) Page 78

R 1) - 8,388,608 ... + 8,388,607

2) 0

3) Page 68

2) 0b 00000000 00000000

3) Page 55

Status Bits

Bit 0: Dual-channel counter - Strobe status

0 =

no strobe

1 =

strobe event arrived

Bit 1: Reserved

Bit 2: Reserved

Bit 3: Dual-channel counter - reference status

0 =

No zeroing

1 =

Setting to zero completed

Bit 4: Dual-channel counter - strobe overflow

status

0 =

No strobe overflow

1 =

Strobe overflow

Bit 5: Reserved

100 Jetter AG

JX2-CNT1 Appendices

Number

Name R/W1) Value Range

2) Default value

3) Cross reference

Bit 6: Dual-channel counter - Z track error

status

0 =

No Z track error

1 =

Z track error

Bit 7: Reserved

Control Bits

Bit 8: Reserved

Bit 9: SSI - Reversal of counting direction

0 =

Counting direction as per data transmission

1 =

Inverted counting direction

Bit 10 - bit 11: Reserved

Bit 12: Frequency display - Activation

0 =

R3xx1 = dual-channel counter Offset R3xx7 = SSI - Parity error counter R3xx1 = Frequency - display

1 =

R3xx7 = Frequency - time base

Bit 13: Reserved

Bit 14: Master mode - selection

0 =

Operation along with JX2-SV1 /

1 =

CAN-DIMA Operation in synchronous mode (JetMoves)

Bit 15: Reserved

3xx4 Single-channel counter -

count value

3xx5 Status bit 14 = 0

3xx5 Status bit 14 = 1

3xx6 SSI - configuration R/W1) 0; 21,464 ... 65,535

Transmission rate actual position

Number of leading axis R/W1) 1 ... 2

R/W1) - 8,388,608 ... + 8,388,607

2) 0

3) Page 59

R/W1) 0 ... 5

2) 0

3) Page 89

2) 0

3) Page 92

2) 0

3) Page 75

Jetter AG 101

Appendices JetWeb

Number

3xx7 Status bit 12 = 0

3xx7 Status bit 12 = 1

3xx8 Dual-channel counter -

3xx9 Firmware version R 1) 0 .. 8,388,607

SSI - counter of parity errors

Frequency - display R 1) - 8,388,608 ... + 8,388,607

filtering frequency

Name R/W1) Value Range

2) Default value

3) Cross reference

R/W1) - 8,388,608 ... + 8,388,607

2) 0

3) Page 78

2) 0

3) Page 77

R/W1) 0 ... 32,704

2) 0

3) Page 67

2) Firmware version

3) Page 57

102 Jetter AG

JX2-CNT1 Appendices

Jetter AG 103

Jetter Subsidiaries

Jetter AG

Gräterstraße 2

D-71642 Ludwigsburg, Germany

Germany

Phone: +49 7141 2550-0 Phone -

Sales: +49 7141 2550-433 Fax Sales: +49 7141 2550-484 Hotline: +49 7141 2550-444 Internet: http://www.jetter.de E-Mail: sales@jetter.de

Jetter Asia Pte. Ltd.

32 Ang Mo Kio Industrial Park 2 #05-02 Sing Industrial Complex Singapore 569510

Singapore

Phone: +65 6483 8200 Phone: +41 719 1879-50 Telefon: +1 440 8380860 Fax: +65 6483 3881 Fax: +41 719 1879-69 Fax: +1 440 8380861 E-Mail: sales@jetter.com.sg E-Mail: info@jetterag.ch E-Mail: bschulze@jetterus.com Internet: http://www.jetter.com.sg Internet: http://www.jetterag.ch Internet: http://www.jetterus.com

Jetter (Schweiz) AG

Münchwilerstraße 19 CH-9554 Tägerschen

Switzerland

Jetter USA Inc.

165 Ken Mar Industrial Parkway Broadview Heights OH 44147-2950

U.S.A.

104 Jetter AG

Jetter JetWeb JX2-CNT1 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

JX2-CNT1

Table of Contents

JX2-CNT1 1.1 Generally Valid Safety Instructions

Table of Contents 1 Safety Instructions

1.1.1 Intended Conditions of Use

1.1.2 Usage Other Than Intended

1.2 Ensure Your Own Safety

1.2.1 Malfunctions

1.2.2 Information Signs and Labels

JX2-CNT1 1.3 Instructions on EMI

JX2-CNT1 2 Introduction

2.1 Product Description

2.2 Ordering Information

2.3 Update Information JetWeb

2.4 System Requirements

JX2-CNT1 3 Physical Dimensions

JX2-CNT1 4 Operating Conditions

JX2-CNT1 5 Technical Data

JX2-CNT1 6.1 Installation Steps

6 Installation Guide

6.2 Notes on Safety as regards the Installation

JX2-CNT1 6.3 Notes on Safety as regards Commissioning

6.4 General Information

6.5 Sample Circuitry

JX2-CNT1 6.6 Single-Channel Counter

6.6.1 Description of Connections

6.6.2 Description of LEDs

JX2-CNT1 6.7 Dual-Channel Counter

6.7.1 Description of Connections - Encoder Signals

6.7.2 Description of Connections - Reference Switch and Strobe Input

6.7.3 Description of LEDs

6.8 SSI Encoder

6.8.1 Description of Connections

6.9 System Bus

6.9.1 Centralized Arrangement on the System Bus

6.9.2 Remote Arrangement on the System Bus

6.9.3 System Bus Cable Specification

JX2-CNT1 7 Software Programming

7.1 Virtual Outputs

7.1.1 Addressing the Virtual Outputs

7.2 Register Interface JetWeb

7.2.1 Register Addressing

JX2-CNT1 8 Configuration and Diagnostics

8.1 Status and Control Functions

8.2 Firmware Version

JX2-CNT1 9 Single-Channel Counter

JX2-CNT1 10 Dual-Channel Counter

10.1 Reversal of Counting Direction

10.2 Count Value

10.3 Dual-Channel Counter as Single-Channel Counter JetWeb

10.4 Referencing JetWeb

10.4.1 Setting the Reference Position

10.4.2 Setting the Reference Offset

10.5 Reference Offset JetWeb

10.6 Digital Filter

10.7 Strobe Function JetWeb

JX2-CNT1 11 SSI Absolute Encoder

11.1 Reading in SSI data

11.1.1 Standard Format

11.1.2 Fir-Tree Format

11.1.3 Left- and Right-Justified Data Format

11.1.4 Reading-In Data Formats

11.2 Configuration

11.2.1 Number and Rate of Clocks

11.3 Reversal of Counting Direction

11.4 Parity Check

11.5 Reference Offset JetWeb

JX2-CNT1 12 Frequency Measurement

12.1 Sample Program JetWeb

JX2-CNT1 13 Master-Slave Operation

13.1 Mode 1 - Operation along with JX2-SV1, etc. JetWeb

13.2 Mode 2 - Operation along with JM-2xx

List of Appendices Appendix A: Overview - Outputs

Appendix B:Overview of Registers

Jetter AG