WAGO 750-652, 750-468, 750-468/000-001, 750-468/000-200, 750-468/025-000 User Manual

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WAGO-I/O-SYSTEM 750

Manual

750-652

485

Configurable

Version 1.4.0

Serial Interface RS-232 / RS-

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2 WAGO-I/O-SYSTEM 750 750-652 Serial Interface RS-232 / RS-485

WAGO Kontakttechnik GmbH & Co. KG

Hansastraße 27 D-32423 Minden

Phone: +49 (0) 571/8 87 – 0 Fax: +49 (0) 571/8 87 – 1 69

E-Mail: info@wago.com

Web: http://www.wago.com

Technical Support

Phone: +49 (0) 571/8 87 – 5 55 Fax: +49 (0) 571/8 87 – 85 55

E-Mail: support@wago.com

Every conceivable measure has been taken to ensure the accuracy and completeness of this documentation. However, as errors can never be fully excluded, we always appreciate any information or suggestions for improving the documentation.

E-Mail: documentation@wago.com

We wish to point out that the software and hardware terms as well as the trademarks of companies used and/or mentioned in the present manual are generally protected by trademark or patent.

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WAGO-I/O-SYSTEM 750 Table of Contents 3 750-652 Serial Interface RS-232 / RS-485

1 Notes about this Documentation ................................................................. 6

1.1 Validity of this Documentation ................................................................. 6

1.2 Copyright ................................................................................................... 6

1.3 Symbols ..................................................................................................... 7

1.4 Number Notation ....................................................................................... 9

1.5 Font Conventions ...................................................................................... 9

2 Important Notes ......................................................................................... 10

2.1 Legal Bases ............................................................................................. 10

2.1.1 Subject to Changes ............................................................................. 10

2.1.2 Personnel Qualifications ..................................................................... 10

2.1.3 Use of the WAGO-I/O-SYSTEM 750 in Compliance with Underlying

Provisions ........................................................................................... 10

2.1.4 Technical Condition of Specified Devices ......................................... 11

2.2 Safety Advice (Precautions) .................................................................... 12

3 Device Description ..................................................................................... 14

3.1 View ........................................................................................................ 18

3.2 Connectors ............................................................................................... 19

3.2.1 Data Contacts/Internal Bus ................................................................. 19

3.2.2 Power Jumper Contacts/Field Supply ................................................ 20

3.2.3 CAGE CLAMP® Connectors ............................................................. 22

3.3 Display Elements .................................................................................... 23

3.4 Operating Elements ................................................................................. 24

3.5 Schematic Diagram ................................................................................. 24

3.6 Technical Data ........................................................................................ 25

3.6.1 Device Data ........................................................................................ 25

3.6.2 Supply ................................................................................................. 25

3.6.3 Communication .................................................................................. 25

3.6.4 Interface .............................................................................................. 26

3.6.5 Connection Type ................................................................................ 26

3.6.6 Climatic Environmental Conditions ................................................... 26

3.7 Approvals ................................................................................................ 27

3.8 Standards and Guidelines ........................................................................ 28

4 Process Image ............................................................................................. 29

4.1 Operating Modes for Serial Transmission .............................................. 29

4.2 Data Exchange Mode .............................................................................. 31

5 Function Description ................................................................................. 33

5.1 Operating Modes for Serial Transmission .............................................. 33

5.1.1 Transmit Data ..................................................................................... 33

5.1.1.1 Continuous Transmission .............................................................. 33

5.1.2 Receive Data ....................................................................................... 34

5.1.2.1 Continuous Receipt ........................................................................ 34

5.1.3 RS-232 Operating Mode..................................................................... 35

5.1.3.1 Flow Control Using XON-/XOFF Protocol .................................. 35

5.1.3.2 Flow Control Using RTS/CTS ....................................................... 35

5.1.3.3 Flow Control Using RTS/CTS, RTS with Lead/Follow-on Time . 35

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4 Table of Contents WAGO-I/O-SYSTEM 750 750-652 Serial Interface RS-232 / RS-485

5.1.4 RS-485 Operating Mode..................................................................... 36

5.1.5 RS-422 Operating Mode..................................................................... 36

5.1.6 DMX Operating Mode ....................................................................... 36

5.2 Data Exchange Operating Mode ............................................................. 37

6 Mounting ..................................................................................................... 38

6.1 Mounting Sequence ................................................................................. 38

6.2 Inserting and Removing Devices ............................................................ 39

6.2.1 Inserting the I/O Module .................................................................... 39

6.2.2 Removing the I/O Module .................................................................. 40

7 Connect Devices ......................................................................................... 41

7.1 Connecting a Conductor to the CAGE CLAMP® ................................... 41

7.2 Connection Examples .............................................................................. 42

7.2.1 RS-232 Operating Mode..................................................................... 42

7.2.2 RS-485 Operating Mode..................................................................... 43

7.2.3 RS-422 Operating Mode..................................................................... 44

7.2.4 DMX Operating Mode ....................................................................... 45

7.2.5 Data Exchange Mode ......................................................................... 45

8 Commissioning ........................................................................................... 46

8.1 Configuration and Parameterization with WAGO-I/O-CHECK ............. 46

8.1.1 RS-232 / RS-485 Serial Interface (Configuration Dialog) ................. 46

8.1.2 Toolbar on the Configuration Dialog ................................................. 47

8.1.3 Process Image Size ............................................................................. 48

8.1.4 Parameter Range ................................................................................. 49

8.1.5 Setting the RS-232 / RS-485 Serial Interface ..................................... 50

8.2 Configuration and Parameterization via GSD for PROFIBUS DP and

PROFINET IO ........................................................................................ 51

8.3 Data Transfer ........................................................................................... 51

8.3.1 Example of Operating Modes for Serial Transmission ...................... 51

8.3.2 Initialization ........................................................................................ 52

8.3.3 Transmission of the Character String "Hello World!" ....................... 53

8.3.4 Receiving the Character String "WAGO" .......................................... 54

8.3.5 Operation with Continuous Send........................................................ 55

8.3.5.1 Transmission of a Block of One to 512 Bytes ............................... 55

8.3.5.2 Transmission of a Block of More than 512 Bytes ......................... 55

8.3.6 DMX Application Example ................................................................ 57

8.3.6.1 Operation with Deactivated Continuous Send ............................... 57

8.3.6.2 Operation with Activated Continuous Send .................................. 57

8.3.7 Data Exchange Operating Mode Application Example ..................... 58

9 Diagnostics .................................................................................................. 59

9.1 Serial Operating Modes ........................................................................... 59

9.2 Data Exchange Operating Mode ............................................................. 59

10 Use in Hazardous Environments .............................................................. 60

10.1 Marking Configuration Examples ........................................................... 61

10.1.1 Marking for Europe According to ATEX and IEC-Ex ...................... 61

10.1.2 Marking for America According to NEC 500 .................................... 66

10.2 Installation Regulations ........................................................................... 67

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WAGO-I/O-SYSTEM 750 Table of Contents 5 750-652 Serial Interface RS-232 / RS-485

10.2.1 Special Conditions for Safe Use

(ATEX Certificate TÜV 07 ATEX 554086 X) .................................. 68

10.2.2 Special Conditions for Safe Use

(ATEX Certificate TÜV 12 ATEX 106032 X) .................................. 69

10.2.3 Special Conditions for Safe Use

(IEC-Ex Certificate TUN 09.0001 X) ................................................ 70

10.2.4 Special Conditions for Safe Use

(IEC-Ex Certificate IECEx TUN 12.0039 X) .................................... 71

10.2.5 Special Conditions for Safe Use

According to ANSI/ISA 12.12.01 ...................................................... 72

11 Appendix ..................................................................................................... 73

11.1 Configuration and Parameterization via GSD for PROFIBUS DP and

PROFINET IO ........................................................................................ 73

11.1.1 Configuration of the RS-232/RS-485 Interface .................................. 73

11.1.1.1 PROFIBUS DP (750-333, 750-343, 750-833) Fieldbus Coupler

PROFINET IO (750-370) Fieldbus Coupler ................................. 73

11.1.1.2 PROFINET IO (750-375, 750-377) Fieldbus Coupler .................. 73

11.1.2 Configuration of the RS-232/RS-485 Serial Interface ....................... 74

11.1.2.1 All PROFIBUS DP and PROFINET IO Fieldbus Couplers .......... 75

11.1.2.2 PROFIBUS DP (750-333, 750-343, 750-833) Fieldbus Coupler

PROFINET IO (750-370) Fieldbus Coupler ................................. 77

11.1.2.3 PROFINET IO (750-375, 750-377) Fieldbus Coupler .................. 77

List of Figures ...................................................................................................... 78

List of Tables ........................................................................................................ 79

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6 Notes about this Documentation WAGO-I/O-SYSTEM 750

Table 1: Variants

Item Number/Variant

Designation

750-652

Serial Interface RS-232 / RS-485

750-652/025-000

Serial Interface RS-232 / RS-485/T

750-652 Serial Interface RS-232 / RS-485

1 Notes about this Documentation

Always retain this documentation!

This documentation is part of the product. Therefore, retain the documentation during the entire service life of the product. Pass on the documentation to any subsequent user. In addition, ensure that any supplement to this documentation is included, if necessary.

1.1 Validity of this Documentation

This documentation is only applicable to the I/O module 750-652 (Serial Interface RS-232 / RS-485) and the variants listed in the table below.

Documentation Validity for Variants

Unless otherwise indicated, the information given in this documentation applies to listed variants.

The I/O module 750-652 shall only be installed and operated according to the instructions in this manual and in the manual for the used fieldbus coupler/controller.

Consider power layout of the WAGO-I/O-SYSTEM 750!

In addition to these operating instructions, you will also need the manual for the used fieldbus coupler/controller, which can be downloaded at www.wago.com. There, you can obtain important information including information on electrical isolation, system power and supply specifications.

1.2 Copyright

This Manual, including all figures and illustrations, is copyright-protected. Any further use of this Manual by third parties that violate pertinent copyright provisions is prohibited. Reproduction, translation, electronic and phototechnical filing/archiving (e.g., photocopying) as well as any amendments require the written consent of WAGO Kontakttechnik GmbH & Co. KG, Minden, Germany. Non-observance will involve the right to assert damage claims.

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WAGO-I/O-SYSTEM 750 Notes about this Documentation 7 750-652 Serial Interface RS-232 / RS-485

1.3 Symbols

Personal Injury!

Indicates a high-risk, imminently hazardous situation which, if not avoided, will result in death or serious injury.

Personal Injury Caused by Electric Current!

Indicates a high-risk, imminently hazardous situation which, if not avoided, will result in death or serious injury.

Personal Injury!

Indicates a moderate-risk, potentially hazardous situation which, if not avoided, could result in death or serious injury.

Personal Injury!

Indicates a low-risk, potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

Damage to Property!

Indicates a potentially hazardous situation which, if not avoided, may result in damage to property.

Damage to Property Caused by Electrostatic Discharge (ESD)!

Indicates a potentially hazardous situation which, if not avoided, may result in damage to property.

Important Note!

Indicates a potential malfunction which, if not avoided, however, will not result in damage to property.

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8 Notes about this Documentation WAGO-I/O-SYSTEM 750 750-652 Serial Interface RS-232 / RS-485

Additional Information:

Refers to additional information which is not an integral part of this documentation (e.g., the Internet).

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WAGO-I/O-SYSTEM 750 Notes about this Documentation 9

Table 2: Number Notation

Number Code

Example

Note

Decimal

100

Normal notation

Hexadecimal

0x64

C notation

Binary

'100' '0110.0100'

In quotation marks, nibble separated with dots (.)

Table 3: Font Conventions

Font Type

Indicates

italic

Names of paths and data files are marked in italic-type. e.g.: C:\Program Files\WAGO Software

Menu items are marked in bold letters. e.g.: Save

A greater-than sign between two names means the selection of a

e.g.: File > New

Input

Designation of input or optional fields are marked in bold letters, e.g.: Start of measurement range

“Value”

Input or selective values are marked in inverted commas. e.g.: Enter the value “4 mA” under Start of measurement range.

[Button]

Pushbuttons in dialog boxes are marked with bold letters in square

e.g.: [Input]

[Key]

Keys are marked with bold letters in square brackets. e.g.: [F5]

750-652 Serial Interface RS-232 / RS-485

1.4 Number Notation

1.5 Font Conventions

menu item from a menu.

brackets.

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10 Important Notes WAGO-I/O-SYSTEM 750 750-652 Serial Interface RS-232 / RS-485

2 Important Notes

This section includes an overall summary of the most important safety requirements and notes that are mentioned in each individual section. To protect your health and prevent damage to devices as well, it is imperative to read and carefully follow the safety guidelines.

2.1 Legal Bases

2.1.1 Subject to Changes

WAGO Kontakttechnik GmbH & Co. KG reserves the right to provide for any alterations or modifications that serve to increase the efficiency of technical progress. WAGO Kontakttechnik GmbH & Co. KG owns all rights arising from the granting of patents or from the legal protection of utility patents. Third-party products are always mentioned without any reference to patent rights. Thus, the existence of such rights cannot be excluded.

2.1.2 Personnel Qualifications

All sequences implemented on WAGO-I/O-SYSTEM 750 devices may only be carried out by electrical specialists with sufficient knowledge in automation. The specialists must be familiar with the current norms and guidelines for the devices and automated environments.

All changes to the coupler or controller should always be carried out by qualified personnel with sufficient skills in PLC programming.

2.1.3 Use of the WAGO-I/O-SYSTEM 750 in Compliance with Underlying Provisions

Fieldbus couplers, fieldbus controllers and I/O modules found in the modular WAGO-I/O-SYSTEM 750 receive digital and analog signals from sensors and transmit them to actuators or higher-level control systems. Using programmable controllers, the signals can also be (pre-) processed.

The devices have been developed for use in an environment that meets the IP20 protection class criteria. Protection against finger injury and solid impurities up to

12.5 mm diameter is assured; protection against water damage is not ensured. Unless otherwise specified, operation of the devices in wet and dusty environments is prohibited.

Operating the WAGO-I/O-SYSTEM 750 devices in home applications without further measures is only permitted if they meet the emission limits (emissions of interference) according to EN 61000-6-3. You will find the relevant information in the section “Device Description” > “Standards and Guidelines” in the manual for the used fieldbus coupler/controller.

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WAGO-I/O-SYSTEM 750 Important Notes 11 750-652 Serial Interface RS-232 / RS-485

Appropriate housing (per 94/9/EG) is required when operating the WAGO-I/OSYSTEM 750 in hazardous environments. Please note that a prototype test certificate must be obtained that confirms the correct installation of the system in a housing or switch cabinet.

2.1.4 Technical Condition of Specified Devices

The devices to be supplied ex works are equipped with hardware and software configurations, which meet the individual application requirements. WAGO Kontakttechnik GmbH & Co. KG will be exempted from any liability in case of changes in hardware or software as well as to non-compliant usage of devices.

Please send your request for modified and new hardware or software configurations directly to WAGO Kontakttechnik GmbH & Co. KG.

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12 Important Notes WAGO-I/O-SYSTEM 750 750-652 Serial Interface RS-232 / RS-485

2.2 Safety Advice (Precautions)

For installing and operating purposes of the relevant device to your system the following safety precautions shall be observed:

Do not work on devices while energized!

All power sources to the device shall be switched off prior to performing any installation, repair or maintenance work.

Install the device only in appropriate housings, cabinets or in electrical operation rooms!

The WAGO-I/O-SYSTEM 750 and its components are an open system. As such, install the system and its components exclusively in appropriate housings, cabinets or in electrical operation rooms. Allow access to such equipment and fixtures to authorized, qualified staff only by means of specific keys or tools.

Replace defective or damaged devices!

Replace defective or damaged device/module (e.g., in the event of deformed contacts), since the long-term functionality of device/module involved can no longer be ensured.

Protect the components against materials having seeping and insulating properties!

The components are not resistant to materials having seeping and insulating properties such as: aerosols, silicones and triglycerides (found in some hand creams). If you cannot exclude that such materials will appear in the component environment, then install the components in an enclosure being resistant to the above-mentioned materials. Clean tools and materials are imperative for handling devices/modules.

Clean only with permitted materials!

Clean soiled contacts using oil-free compressed air or with ethyl alcohol and leather cloths.

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WAGO-I/O-SYSTEM 750 Important Notes 13 750-652 Serial Interface RS-232 / RS-485

Do not use any contact spray!

Do not use any contact spray. The spray may impair contact area functionality in connection with contamination.

Do not reverse the polarity of connection lines!

Avoid reverse polarity of data and power supply lines, as this may damage the devices involved.

Avoid electrostatic discharge!

The devices are equipped with electronic components that may be destroyed by electrostatic discharge when touched. Please observe the safety precautions against electrostatic discharge per DIN EN 61340-5-1/-3. When handling the devices, please ensure that environmental factors (personnel, work space and packaging) are properly grounded.

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14 Device Description WAGO-I/O-SYSTEM 750 750-652 Serial Interface RS-232 / RS-485

3 Device Description

The I/O module 750-652 (Serial Interface RS-232 / RS-485) allows the optional connection of devices with a RS-485, RS-422 or RS-232 interface.

It also provides gateways between the serial interface and the fieldbus systems supported by the WAGO-I/O-SYSTEM 750.

No higher protocol level is required by the module. Communication to the associated fieldbus master is completely transparent. This provides for a broader application scope for the serial interface module. If required, communication protocols can be configured via fieldbus master.

The 2560 byte input buffer provides for high data baud rates. At lower baud rates, the data received in lower priority tasks is evaluated without data loss.

The 512-byte output buffer provides fast transmission of larger data strings.

The operating mode of the I/O module can be configured with the start-up tool WAGO-I/O-CHECK 3.3 (firmware version 03 or higher requires WAGO-I/OCHECK version 3.5.3 or higher).

NOTE

The default operating mode is RS-485 half-duplex. The default data transmission rate is 9600 baud. 1 start bit, 8 data bits and 1 stop bit are sent. There is no parity generation and dataflow control. Before starting operation, the connections of the I/O module must be cabled appropriately (see section “Connect Devices” > … > “Connection Examples” ).

In RS-232 mode, the interface works in accordance with the TIA/EIA-232-F and CCITT V.28/DIN 66259-1 standards. In RS-485/RS-422 mode, the interface works in accordance with the TIA/EIA485-A, DIN 66259 standards.

The connected device can communicate directly with the control unit via the fieldbus coupler/controller used. The active communication channel works independent of the fieldbus system used in full or half-duplex operation at up to 115200 baud.

In the data flow control through RTS/CTS in RS-232 mode, a lead time or followon time can be configured for the I/O module for the RTS signal. This function is available with firmware version 03 or higher.

Direct data exchange between different fieldbus nodes of the 750 series is possible in conjunction with a second I/O module. This function is available with firmware version 03 or higher.

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WAGO-I/O-SYSTEM 750 Device Description 15 750-652 Serial Interface RS-232 / RS-485

The I/O module can be configured as a DMX sender with a baud rate of 250 kBits/s. This function is available with firmware version 03 or higher.

The wiring to the communication partner takes place in RS-232 mode via the TxD, RxD connections, if necessary RTS/CTS and ground and in the RS-485/ RS-422 mode via the connections A, B, X, Y, and ground.

The shield connection is fed directly to the carrier rail and contact is made automatically by snapping the module onto the rail.

The assignment of the connections is described in the “Connectors” section. Connection examples are shown in section “Connecting Devices” > … > “Connection Example(s)”.

Multi-color LEDs indicate the operating status and the trouble-free internal bus communication as well as the status of the signal transmission. The meaning of the LEDs is described in the “Display Elements” section.

The I/O module 750-652 (Serial Interface RS-232 / RS-485) receives the 24 V voltage supply for the field level from an upstream I/O module or from the fieldbus coupler/controller via blade-formed power jumper contacts. It then provides these potentials to subsequent I/O modules via spring-formed power jumper contacts.

The field voltage and the system voltage are electrically isolated from each other.

With consideration of the power jumper contacts, the individual modules can be arranged in any combination when configuring the fieldbus node. An arrangement in groups within the group of potentials is not necessary.

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16 Device Description WAGO-I/O-SYSTEM 750

Table 4: Compatibility List 750-0652

Fieldbus couplers/controllers

Firmware status

PROFINET

Fieldbus couplers

750-370

Profibus

Fieldbus couplers

750-333

Programmable fieldbus controller

750-833

I/O-IPC*

758-870/ 000-111

758-870/ 000-131

758-874/ 000-111

758-875/ 000-111

758-876/ 000-111

ETHERNET

Fieldbus couplers

750-341

750-342

750-352

Programmable

750-841

750-842

750-843

750-871

750-872

750-873

750-880

750-881

750-882

I/O-IPC

758-870/ 000-110

758-870/ 000-130

758-874/ 000-110

758-875/ 000-110

758-875/ 000-130

758-876/ 000-110

DeviceNet

Fieldbus couplers

750-306

ECO fieldbus coupler

750-346

Programmable fieldbus controller

750-806

CANopen

Fieldbus couplers 750-337

750-338

ECO fieldbus coupler 750-347

750-348

750-652 Serial Interface RS-232 / RS-485

The 750-652 module can be used with the fieldbus couplers and controllers of the WAGO-I/O-SYSTEM 750 of the specified version or higher listed in the “Compatibility list” table.

Bus System

Item No.

fieldbus controller

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WAGO-I/O-SYSTEM 750 Device Description 17

Table 4: Compatibility List 750-0652

Fieldbus couplers/controllers

Firmware status

Programmable 750-837

750-838

I/O-IPC*

758-870/ 000-112

758-875/ 000-112

KNX

Programmable fieldbus controller

750-849

BACnet

Programmable fieldbus controller

750-830

Also available via 2 ETHERNET interfaces

750-652 Serial Interface RS-232 / RS-485

Bus System

Other fieldbus couplers/controllers on request.

Item No.

fieldbus controller

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18 Device Description WAGO-I/O-SYSTEM 750

Table 5: Legend for Figure “View”

Pos.

Description

Details See Section

Marking possibility with MiniWSB

--2

Status LEDs

“Device Description” > “Display Elements”

Data contacts

“Device Description” > “Connectors”

CAGE CLAMP® connectors

“Device Description” > “Connectors”

Power jumper contacts

“Device Description” > “Connectors”

Release tab

“Mounting” > “Inserting and Removing Devices”

750-652 Serial Interface RS-232 / RS-485

3.1 View

Figure 1: View

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WAGO-I/O-SYSTEM 750 Device Description 19 750-652 Serial Interface RS-232 / RS-485

3.2 Connectors

3.2.1 Data Contacts/Internal Bus

Communication between the fieldbus coupler/controller and the I/O modules as well as the system supply of the I/O modules is carried out via the internal bus. It is comprised of 6 data contacts, which are available as self-cleaning gold spring contacts.

Figure 2: Data Contacts

Do not place the I/O modules on the gold spring contacts!

Do not place the I/O modules on the gold spring contacts in order to avoid soiling or scratching!

Ensure that the environment is well grounded!

The devices are equipped with electronic components that may be destroyed by electrostatic discharge. When handling the devices, ensure that the environment (persons, workplace and packing) is well grounded. Avoid touching conductive components, e.g. data contacts.

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20 Device Description WAGO-I/O-SYSTEM 750

Table 6: Legend for Figure “Power Jumper Contacts”

Contact

Type

Function

Spring contact

Potential transmission (Uv) for field supply

Spring contact

Potential transmission (0 V) for field supply

Blade contact

Potential feed-in (0 V) for field supply

Blade contact

Potential feed-in (Uv) for field supply

750-652 Serial Interface RS-232 / RS-485

3.2.2 Power Jumper Contacts/Field Supply

Risk of injury due to sharp-edged blade contacts!

The blade contacts are sharp-edged. Handle the I/O module carefully to prevent injury.

The I/O module 750-652 has 2 self-cleaning power jumper contacts that supply and transmit power for the field side. The contacts on the left side of the I/O module are designed as blade contacts and those on the right side as spring contacts.

Figure 3: Power Jumper Contacts

Do not exceed maximum current via power jumper contacts!

The maximum current to flow through the power jumper contacts is 10 A. Greater currents can damage the contacts. When configuring your system, ensure that this current is not exceeded. If exceeded, insert an additional supply module.

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WAGO-I/O-SYSTEM 750 Device Description 21 750-652 Serial Interface RS-232 / RS-485

Use supply modules for ground (earth)!

The I/O module has no power jumper contacts for receiving and transmitting the earth potential. Use a supply module when an earth potential is needed for the subsequent I/O modules.

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22 Device Description WAGO-I/O-SYSTEM 750

Table 7: Legend for Figure “CAGE CLAMP® Connectors”

Designation

Connector

Function

RTS (RS-232) Z / TxD+ (RS-485/RS-422)

TxD (RS-232) Y / TxD- (RS-485/RS-422)

CTS (RS-232) B / RxD+ (RS-485/RS-422)

RxD (RS-232) A / RxD- (RS-485/RS-422)

Common

(ground)

Common (ground)

Shield

Shield (screen)

750-652 Serial Interface RS-232 / RS-485

3.2.3 CAGE CLAMP® Connectors

Use shielded signal lines!

Only use shielded signal lines for analog signals and I/O modules which are equipped with shield clamps. Only then can you ensure that the accuracy and interference immunity specified for the respective I/O module can be achieved even in the presence of interference acting on the signal cable.

Figure 4: CAGE CLAMP

D0 1

D1 5

D2 2

D3 6

(screen)

Connectors

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WAGO-I/O-SYSTEM 750 Device Description 23

Table 8: Legend for Figure “Display Elements”

Ready for operation and undisturbed internal bus communication

Not ready for operation or no or disturbed internal bus communication

OFF

No signal transmission TxD

Green

Signal transmission TxD present 1)

I/O module has received XOFF character, the

CTS line has fallen, the transmission is inactive

OFF

No signal transmission RxD or input open

Green

Signal transmission RxD present 1)

Signal transmission RxD present 1), but some characters

error has occurred) 3)

OFF

No transmission error

Green

Output buffer is full

Input buffer is full (LED lights up if there are more than

buffer)

Green

RS-485 half-duplex, DMX

Yellow

RS-422 full-duplex, data exchange

Red

RS-232

OFF

No data flow control

Green

RTS/CTS data flow control active 4)

Yellow

XON/XOFF data flow control active 2)

Red

RTS with lead time and follow-on time is active 5)

OFF

Data exchange mode is OFF 5)

Yellow

Data exchange mode is initialized

Green

Data exchange mode is ON

Yellow

flashing

Data exchange mode is ON, but there is no communication (timeout)

750-652 Serial Interface RS-232 / RS-485

3.3 Display Elements

Figure 5: Display Elements

LED Designation Status Function

Green

A Function

Red

TxD

(transmit)

RxD

(receive)

Transmission

status

E Mode

F Data flow control

Yellow

Red

Yellow

transmission is inactive

received are defective. (parity, data frame or overrun

2304 characters in the input buffer. LED does not light up if there are fewer than 2176 characters in the input

Data exchange

mode

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24 Device Description WAGO-I/O-SYSTEM 750

Table 8: Legend for Figure “Display Elements”

OFF

DMX is OFF

Green

DMX is ON

With high baud rates, the pulses are so short that the on state cannot or can hardly be detected

with the naked eye.

XON/XOFF data flow control active

Defective characters are not transmitted by the I/O module to the fieldbus coupler/controller.

RTS/CTS data flow control active

Firmware version 03 or higher

750-652 Serial Interface RS-232 / RS-485

LED Designation Status Function

DMX 5)

3.4 Operating Elements

The I/O module 750-652 has no operating elements.

3.5 Schematic Diagram

Figure 6: Schematic Diagram

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WAGO-I/O-SYSTEM 750 Device Description 25

Table 9: Technical Data ‒ Device Data

Width

12 mm

Height (from upper edge of DIN 35 rail)

64 mm

Length

100 mm

Weight

approx. 50 g

Degree of protection

IP20

Table 10: Technical Data ‒ Supply

Power supply

via system voltage internal bus (5 VDC)

Current consumption (internal)

max. 85 mA

Current via power jumper contacts

max.

10 A

Isolation (peak value)

500 V system/supply

Table 11: Technical Data ‒ Communication

Transmission

1 TxD/1 RxD, full-duplex, half-duplex,

1 or 2 stop bits

Mode

• RS-232

• DMX half-duplex/250k1)

Data flow control

RTS/CTS

depending on mode, XON/XOFF3)

Baud rate

300 ... 115200 baud

Data width, internal

8, 24*) or 48 bytes (configurable)

Line length

RS-485/RS-422: max. approx. 1000 m

DMX: max. 100 m twisted pair cable

Buffer

2560 bytes for receive / 512 bytes for send5)

Default setting

Possible with firmware version 03 or higher

Activation of flow control RTS/CTS is only possible for RS-232 mode Flow control RTS/CTS with lead/follow-on time possible with firmware version 03 or higher

Activation of flow control XON/XOFF is only possible for the RS-232 and RS-422 full-duplex mode

Depending on baud rate, bus system and cable type (use of a twisted-pair cable is recommended)

RS-232, RS-485 half-duplex, RS-422 full-duplex modes

750-652 Serial Interface RS-232 / RS-485

3.6 Technical Data

3.6.1 Device Data

3.6.2 Supply

3.6.3 Communication

channels

(configurable)

7 or 8 bit data,

• RS-485 half-duplex

• RS-422 full-duplex

• Data exchange RS-422

RS-232: max. 40 m Data exchange mode/

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26 Device Description WAGO-I/O-SYSTEM 750

Table 12: Technical Data ‒ Interface

Number of interfaces

Input resistance of the receiver

24 kΩ (1/2 Unit Load)

(true fail-safe)

Isolation

500 V system/supply

Table 13: Technical Data – Field Wiring

Wire connection

CAGE CLAMP®

Cross section

0.08 mm² … 2.5 mm², AWG 28 … 14

Stripped lengths

8 mm … 9 mm / 0.33 in

Table 14: Technical Data – Power Jumper Contacts

Power jumper contacts

Blade/spring contact, self-cleaning

Voltage drop at I

max.

< 1 V/64 modules

Table 15: Technical Data – Data Contacts

Data contacts

Slide contact, hard gold plated, selfcleaning

Table 16: Technical Data – Climatic Environmental Conditions

Operating temperature range

0 °C … 55 °C

Operating temperature range for

temperature range (750-xxx/025-xxx)

−20 °C … +60 °C

Storage temperature range

−25 °C … +85 °C

Storage temperature range for

temperature range (750-xxx/025-xxx)

−40 °C … +85 °C

Relative humidity

Max. 5 % … 95 % without condensation

Resistance to harmful substances

Acc. to IEC 60068-2-42 and IEC 60068-2-43

Maximum pollutant concentration at

SO2 ≤ 25 ppm H2S ≤ 10 ppm

Special conditions

Ensure that additional measures for

– ionizing radiation

750-652 Serial Interface RS-232 / RS-485

3.6.4 Interface

RS-485/RS-422

Defined receiver state with shortcircuited or isolated inputs

3.6.5 Connection Type

3.6.6 Climatic Environmental Conditions

components with extended

relative humidity < 75 %

Manual Version 1.4.0

components are taken, which are used in an environment involving: – dust, caustic vapors or gases

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WAGO-I/O-SYSTEM 750 Device Description 27

Conformity Marking

TÜV 07 ATEX 554086 X

I M2 Ex d I Mb

II 3 D Ex tc IIIC T135°C Dc

IECEx TUN 09.0001 X

Ex d I Mb

Ex tc IIIC T135°C Dc

CULUS

ANSI/ISA 12.12.01

Class I, Div2 ABCD T4

750-652 Serial Interface RS-232 / RS-485

3.7 Approvals

The following approvals have been granted to the basic version and all variants of 750-652 I/O modules:

CULUS

UL508

Korea Certification MSIP-REM-W43-SIM750

The following Ex approvals have been granted to the basic version and all variants of 750-652 I/O modules:

II 3 G Ex nA IIC T4 Gc

Ex nA IIC T4 Gc

The following ship approvals have been granted to 750-652 I/O modules:

ABS (American Bureau of Shipping)

Federal Maritime and Hydrographic Agency

BV (Bureau Veritas)

DNV (Det Norske Veritas) Class B

GL (Germanischer Lloyd) Cat. A, B, C, D (EMC 1)

KR (Korean Register of Shipping)

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28 Device Description WAGO-I/O-SYSTEM 750 750-652 Serial Interface RS-232 / RS-485

LR (Lloyd’s Register) Env. 1, 2, 3, 4

NKK (Nippon Kaiji Kyokai)

RINA (Registro Italiano Navale)

The following ship approvals have been granted to 750-652/025-000 I/O module variations:

Federal Maritime and Hydrographic Agency

GL (Germanischer Lloyd) Cat. A, B, C, D (EMC 1)

3.8 Standards and Guidelines

All variations of 750-652 I/O modules meet the following requirements on emission and immunity of interference:

EMC CE-Immunity to interference acc. to EN 61131-2

EMC CE-Immunity to interference acc. to EN 61000-6-2

EMC CE-Emission of interference acc. to EN 61000-6-3

EMC marine applications-Emission of interference acc. to Germanischer Lloyd

EMC marine applications-Immunity to interference acc. to Germanischer Lloyd

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WAGO-I/O-SYSTEM 750 Process Image 29

Table 17: Process Data for Serial Transmission

Process

Length

Input Data

Output Data

8 bytes

Status byte 0

Control byte 0

Status byte 1

Control byte 1

Data byte 0

Data byte 1

Data byte 2

… … D5

Data byte 5

24 bytes

Data byte 6

… … D21

Data byte 21

D21

Data byte 21

48 bytes

D22

Data byte 22

D22

Data byte 22

… … D45

Data byte 45

D45

Data byte 45

750-652 Serial Interface RS-232 / RS-485

4 Process Image

Mapping of process data in the process image of fieldbus systems

The representation of the I/O modules’ process data in the process image depends on the fieldbus coupler/controller used. Please take this information as well as the particular design of the respective control/status bytes from the section “Fieldbus Specific Design of the Process Data” included in the description concerning the process image of the fieldbus coupler/controller used.

4.1 Operating Modes for Serial Transmission

The data to be sent and received will be stored in up to 46 input and output bytes (D0 ... D45). Data flow is controlled with control and status bytes C0 and S0 or C1 and S1. The input bytes form the memory area for up to 46 characters, which were received by the interface. The characters to be transmitted are sent via the output bytes.

Image

The structure of the control and status bytes is described in the tables below.

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30 Process Image WAGO-I/O-SYSTEM 750

Table 18: Control Byte C0

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

OL2

OL1

OL0

Transmit request

Receive acknowledge

Initialization request

Send continuous (of data from the FIFO)

OL 0

Output length (number of characters to be sent that were stored in the output data, bit 0)

OL1

Output length (number of characters to be sent that were stored in the output data, bit 1)

OL2

Output length (number of characters to be sent that were stored in the output data, bit 2)

Reserved for internal communication

Table 19: Status Byte S0

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

BUF_F

IL2

IL1

IL0

Transmit acknowledge

Receive request

Initialization acknowledge

IL0

Input length (number of characters received that are available in the input data, bit 0)

IL1

Input length (number of characters received that are available in the input data, bit 1)

IL2

Input length (number of characters received that are available in the input data, bit 2)

BUF_F

Buffer full (message: input buffer is full)

Reserved for internal communication

Table 20: Control Byte C1

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

0 0 0

OL5

OL4

OL3

Output length (number of characters to be sent that were stored in the output data, bit 3)

OL4

Output length (number of characters to be sent that were stored in the output data, bit 4)

OL5

Output length (number of characters to be sent that were stored in the output data, bit 5)

This constant must be set to 0.

750-652 Serial Interface RS-232 / RS-485

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WAGO-I/O-SYSTEM 750 Process Image 31

Table 21: Status Byte S1

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

EOV

EFR

EPR

CTS

BUF_E

IL5

IL4

IL3

Input length (number of characters received that are available in the input data, bit 3)

IL4

Input length (number of characters received that are available in the input data, bit 4)

IL5

Input length (number of characters received that are available in the input data, bit 5)

BUF_E

Buffer empty (message: transmit inactive)

CTS

This value is always 01).

EPR

Error parity (message: error during the parity check)

EFR

Error framing (message: data frame is defective)

EOV

Error overrun (message: a character was lost during receipt)

Only applies to flow control "RTS with lead/follow-on time":

Bit 4 is 1: CTS inactive

Table 22: Process Data in Data Exchange Mode

Process

Length

Input Data

Output Data

8 bytes

Status byte 0

Control byte 0

Data byte 0

Data byte 1

Data byte 2

… … D6

Data byte 6

24 bytes

Data byte 7

… … D22

Data byte 22

D22

Data byte 22

48 bytes

D23

Data byte 23

D23

Data byte 23

… … D46

Data byte 46

D46

Data byte 46

750-652 Serial Interface RS-232 / RS-485

Status of the CTS input: Bit 4 is 0: CTS active

For evaluation of the bits of the status byte that signal errors, see chapter "Diagnostics".

4.2 Data Exchange Mode

The data to be sent and received will be stored in up to 47 input and output bytes (D0 ... D46). Data flow is controlled with control and status bytes C0 and S0.

Image

The structure of the control and status bytes is described in the tables below.

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32 Process Image WAGO-I/O-SYSTEM 750

Table 23: Control Byte C0

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

RC X X X X

IR X X

Initialization/reset (If the bit is set, the module is in the reset state. Communication is started only after resetting the bit).

Reserved for internal communication

Not used

Table 24: Status Byte S0

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

RC X X

RCVT

CHK

LGT

The length of the telegram last received does not match the PI size.

CHK

Wrong checksum received.

RCVT

No error-free transmission of the opposite side was received for >= 200 ms

communication partner, the RCVT bit is reset.

Not used

This value is always 0.

Reserved for internal communication

750-652 Serial Interface RS-232 / RS-485

(timeout). After the timeout has elapsed, an attempt is made to reestablish communication between the I/O modules. If a valid telegram is received from the

For evaluation of the bits of the status byte, see chapter "Diagnostics".

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WAGO-I/O-SYSTEM 750 Function Description 33 750-652 Serial Interface RS-232 / RS-485

5 Function Description

5.1 Operating Modes for Serial Transmission

In den

In the operating modes for serial transmission, the I/O module allows communication with serial devices via RS-232, RS-485, RS-422 or DMX.

The I/O module operates in these modes as a link between one of these standardized interfaces to the one side and the application or controller to the other side.

Data transmission between the I/O module and serial devices is determined by the respective interface parameters, e.g. baud rate.

Data transmission between the application and I/O module is controlled by the control and status bytes.

5.1.1 Transmit Data

If data is transmitted via the I/O module to an RS-232, RS-485, RS-422 interface or in DMX mode, the application writes to the data bytes of the process image (output) per each part of the data. The application modifies the control bytes, so that they signal to the I/O module that new data has arrived. The I/O module receives the data sent to the output buffer and modifies the status bytes. Based on these modified status bytes, the application can again recognize that the data transfer was successful. Only when this feedback is present can the application transmit the next part of the data.

The data transmission rates between the application and I/O module and between the I/O module and serial interface are normally not identical.

If data transmission between the application and I/O module is faster than between the I/O module and serial interface, the output buffer in the I/O module fills up faster than it clears. If the application transmits continuously, the output buffer queue even rises when data is continuously transmitted on the serial interface. If the output buffer is full, the application has to wait for space to be available in the output buffer by transmitting to the serial interface.

If data transmission between application and I/O module is slower than between I/O module and serial interface, the output buffer in the I/O module fills up faster than it clears. Transmission of data on the serial interface is repeatedly interrupted even if the application continuously transmits.

5.1.1.1 Continuous Transmission

The I/O module can be set either to transmit data in the output buffer to the serial interface immediately or to start the transmission process only after released by the application. The latter is useful when data has to be transmitted on the serial

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34 Function Description WAGO-I/O-SYSTEM 750 750-652 Serial Interface RS-232 / RS-485

interface according to time criteria, but data transmission between the application and I/O module is slower than between the I/O module and serial interface.

If continuous transmission is activated, the I/O module evaluates the bit SC in control byte 0. Only when SC takes the value 1 does the I/O module transmit the data contained in the output buffer to the serial interface. The application can set SC to 0 to prompt the I/O module to accumulate data in the output buffer.

5.1.2 Receive Data

If the I/O module receives data via an RS-232, RS-485 or RS-422 interface, the data is written to the input buffer of the I/O module. The I/O module transfers data to the application consecutively long as there is data in the input buffer. The I/O module writes the respective part of the data to the data bytes of the process image. The I/O module modifies the status bytes. Based on these modified status bytes, the application can recognize that new data has been received, which it can then evaluate. The application modifies the control bytes, so that they signal to the I/O module that the data transfer was successful. Only when this feedback is present can the I/O module transmit the next part of the data received.

5.1.2.1 Continuous Receipt

If there is data in the input buffer, the I/O module can be set either to begin transmitting data to the application immediately or to wait to receive additional data.

If the I/O module begins to transmit data to the application immediately, only part of a contiguous message may have been received by that point. Whether a message has been transmitted on the serial interface according to time criteria is then no longer evident for the application.

Example: A serial device transmits 20 bytes. After the I/O module has received 1 byte, it begins to transmit the date to the application. The I/O module transmits the remaining 19 bytes received in the meantime only after the application has confirmed receipt of the first byte.

If continuous receipt is activated, the I/O module begins transmitting data to the application only if no additional data has been received on the serial interface for a specific period of time. In the example above, the I/O module would only start transmitting data to the application when all 20 bytes have been received.

The time period after which the I/O module starts data transmission can be defined using the "Continuous Receive Timeout" parameter. Because the duration of the transfer of any amount of data depends on the baud rate setting, number of data and stop bits and the parity, an absolute time specification is not feasible. Therefore, the time required to transmit exactly one character to the serial interface in the current interface parameter setting is used as the unit of measurement.

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WAGO-I/O-SYSTEM 750 Function Description 35 750-652 Serial Interface RS-232 / RS-485

5.1.3 RS-232 Operating Mode

The RS-232 operating mode in full-duplex is realized in a 2-wire or 4-wire pointto-point connection. Simultaneous transmission and receiving is possible.

In this mode, the I/O module supports flow control for the serial interface. The I/O module can be set, so that flow control occurs using of one of the following methods:

• XON-/XOFF protocol

• RTS/CTS

• RTS/CTS, RTS with lead / follow-on time (firmware version 03 or higher)

5.1.3.1 Flow Control Using XON-/XOFF Protocol

If flow control is activated using XON-/XOFF protocol, the I/O modules stops transmitting data to the serial interface when it receives the XOFF character (DC3==0x13) from the serial device. The I/O module continues transmitting data when it receives the XON character (DC1==0x11). When data is received, the I/O module monitors input buffer usage. It transmits the XOFF control character to the serial device when the number of characters in the input buffer exceeds 2304. If the number of characters in the input buffer is below 2176, it transmits XON.

5.1.3.2 Flow Control Using RTS/CTS

If flow control is activated using RTS/CTS, the I/O module stops transmitting data to the serial interface when CTS is set. The I/O module continues transmitting data when CTS is reset. When data is received, the I/O module monitors input buffer usage. It sets RTS when the number of characters in the input buffer exceeds 2304. If the number of characters in the input buffer is below 2176, the I/O module resets RTS.

5.1.3.3 Flow Control Using RTS/CTS, RTS with Lead/Follow-on Time

With firmware version 03 or higher, the I/O module allows RTS/CTS for communication with serial devices that only support a half-duplex connection. This is important, for example, for communication with some telecontrol modems.

If this type of flow control is activated, the I/O module sets RTS while it transmits data to the serial interface. This allows the serial device to switch between receive and transmit depending on RTS. Depending on the technology of the serial device, the switch can take some time. Therefore, the I/O module can be configured to set RTS already some time before transmission of the first character (RTS lead time) or RTS resets only some time after transmission of the last character (RTS follow-on time).

The RTS lead time and RTS follow-on time can be configured independent of each other within the valid rage of 0 to 1000 ms.

If RTS is activated with lead time, the current state of the CTS input is represented by the CTS bit changing in status byte 1.

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36 Function Description WAGO-I/O-SYSTEM 750 750-652 Serial Interface RS-232 / RS-485

5.1.4 RS-485 Operating Mode

The RS-485 operating mode in half-duplex is realized in a 2-wire multi-endpoint (bus) connection. Simultaneous transmission and receiving is not possible with 2-wire connections. The I/O module switches to receive mode after transmitting the content of the input buffer to the serial interface completely.

The the "RS-485 switching time" parameter can be used to configure the time frame when the I/O module should switch after transmitting the last character can be configured.

Possible settings are:

• 100 µs (default setting)

• Duration of the transfer of two characters with the current configuration

• Duration of the transfer of four characters at the current configuration

5.1.5 RS-422 Operating Mode

The RS-422 operating mode in full-duplex is realized in a 4-wire point-to-point connection. Simultaneous transmission and receiving is thus possible.

In this mode, the I/O module supports flow control for the serial interface using the XON/XOFF protocol (see chapter "Flow Control Using XON-/XOFF Protocol").

5.1.6 DMX Operating Mode

The DMX operating mode is also available with firmware version 03 or higher.

In this mode, the I/O module functions as a DMX sender and allows up to 31 nodes to be connected.

The transmission channel is based on RS-485 physics with a transmission rate of 250 kBaud, as well as 1 start and 2 stop bits. In this mode, no further settings are possible.

The structure of the transmitted telegram corresponds to the DMX 512/1990 (DIN 96530-2) specification.

The I/O module can transmit up to 255 bytes of data in this mode. Every transmission of a DMX telegram begins with the transmission of the DMX start byte. DMX channels 1 to 254 can be operated.

The possible refresh rate of DMX data depends on the number of channels operated. By limiting the maximum channel number to 5, 21 or 45 (at a set process image size of the I/O module of 8, 24 or 48 bytes), refresh rates of up to 200, 125 or 80 Hz are possible (see chapter "DMX Application Example").

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WAGO-I/O-SYSTEM 750 Function Description 37 750-652 Serial Interface RS-232 / RS-485

5.2 Data Exchange Operating Mode

The Data Exchange operating mode is also available with firmware version 03 or higher.

In this mode, the I/O module allows cyclic data exchange with another 750-652 I/O module configured in the same operating mode. Process data between different fieldbus nodes can also be exchanged when integrated in different fieldbus systems.

Figure 7: Internal Structure

If two I/O modules are connected together in this mode, each I/O module transmits the data bytes of the process output image cyclically to the I/O module on the opposite side. Received data bytes of the process output image on the opposite side are again represented as data bytes in the process image of the local I/O module. The sequence of data bytes remains unchanged during transmission.

The cycle, in which process data is exchanged between I/O modules, is event driven. The I/O module only starts the next transmission after assessing the transmission of the opposite side as error-free. The I/O module then also begins a new transmission if no error-free transmission has been received from the opposite side for a period of at least 200 ms. This ensures that data exchange is automatically resumed in the event of simultaneous operation or temporary disturbance of the transmission.

The I/O module monitors the process data received from the opposite side for actuality. If no error-free transmission was received from the opposite side for a period of at least 200 ms, the I/O module sets all data bytes of the process image (input) to zero.

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38 Mounting WAGO-I/O-SYSTEM 750 750-652 Serial Interface RS-232 / RS-485

6 Mounting

6.1 Mounting Sequence

Fieldbus couplers/controllers and I/O modules of the WAGO-I/O-SYSTEM 750/753 are snapped directly on a carrier rail in accordance with the European standard EN 50022 (DIN 35).

The reliable positioning and connection is made using a tongue and groove system. Due to the automatic locking, the individual devices are securely seated on the rail after installation.

Starting with the fieldbus coupler/controller, the I/O modules are mounted adjacent to each other according to the project design. Errors in the design of the node in terms of the potential groups (connection via the power contacts) are recognized, as the I/O modules with power contacts (blade contacts) cannot be linked to I/O modules with fewer power contacts.

Risk of injury due to sharp-edged blade contacts!

The blade contacts are sharp-edged. Handle the I/O module carefully to prevent injury.

Insert I/O modules only from the proper direction!

All I/O modules feature grooves for power jumper contacts on the right side. For some I/O modules, the grooves are closed on the top. Therefore, I/O modules featuring a power jumper contact on the left side cannot be snapped from the top. This mechanical coding helps to avoid configuration errors, which may destroy the I/O modules. Therefore, insert I/O modules only from the right and from the top.

Don't forget the bus end module!

Always plug a bus end module 750-600 onto the end of the fieldbus node! You must always use a bus end module at all fieldbus nodes with WAGO-I/OSYSTEM 750 fieldbus couplers/controllers to guarantee proper data transfer.

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WAGO-I/O-SYSTEM 750 Mounting 39 750-652 Serial Interface RS-232 / RS-485

6.2 Inserting and Removing Devices

Perform work on devices only if they are de-energized!

Working on energized devices can damage them. Therefore, turn off the power supply before working on the devices.

6.2.1 Inserting the I/O Module

1. Position the I/O module so that the tongue and groove joints to the fieldbus coupler/controller or to the previous or possibly subsequent I/O module are engaged.

Figure 8: Insert I/O Module (Example)

2. Press the I/O module into the assembly until the I/O module snaps into the carrier rail.

Figure 9: Snap the I/O Module into Place (Example)

With the I/O module snapped in place, the electrical connections for the data contacts and power jumper contacts (if any) to the fieldbus coupler/controller or to the previous or possibly subsequent I/O module are established.

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40 Mounting WAGO-I/O-SYSTEM 750 750-652 Serial Interface RS-232 / RS-485

6.2.2 Removing the I/O Module

1. Remove the I/O module from the assembly by pulling the release tab.

Figure 10: Removing the I/O Module (Example)

Electrical connections for data or power jumper contacts are disconnected when removing the I/O module.

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WAGO-I/O-SYSTEM 750 Connect Devices 41 750-652 Serial Interface RS-232 / RS-485

7 Connect Devices

Use shielded signal lines!

7.1 Connecting a Conductor to the CAGE CLAMP®

The WAGO CAGE CLAMP® connection is appropriate for solid, stranded and finely stranded conductors.

Only connect one conductor to each CAGE CLAMP®!

Only one conductor may be connected to each CAGE CLAMP®. Do not connect more than one conductor at one single connection!

If more than one conductor must be routed to one connection, these must be connected in an up-circuit wiring assembly, for example using WAGO feedthrough terminals.

Exception:

If it is unavoidable to jointly connect 2 conductors, then you must use a ferrule to join the wires together. The following ferrules can be used: Length: 8 mm Nominal cross section

: 1 mm2 for 2 conductors with 0.5 mm2 each

max.

WAGO product: 216-103 or products with comparable properties

1. For opening the CAGE CLAMP® insert the actuating tool into the opening above the connection.

2. Insert the conductor into the corresponding connection opening.

3. For closing the CAGE CLAMP® simply remove the tool. The conductor is now clamped firmly in place.

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42 Connect Devices WAGO-I/O-SYSTEM 750 750-652 Serial Interface RS-232 / RS-485

Figure 11: Connecting a Conductor to a CAGE CLAMP

7.2 Connection Examples

7.2.1 RS-232 Operating Mode

Figure 12: Point-to-point Connection Operating Mode RS-232 with RTS/CTS Data Flow Control

In the RS-232 operating mode (point-to-point connection), terminal resistors are not necessary. The cable length can be up to 40 m due to the maximum allowable cable capacitance of 1500 pF.

By using the data flow control software (XON/XOFF), as well as complete renunciation of flow control, the RTS-to-CTS line is not necessary.

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WAGO-I/O-SYSTEM 750 Connect Devices 43 750-652 Serial Interface RS-232 / RS-485

7.2.2 RS-485 Operating Mode

Figure 13: Bus Connection RS-485 Operating Mode, Half-Duplex

In the RS-485 operating mode (bus connection), a twisted-pair cable should be used at least for larger cable lengths or higher transmission rates. The ends of the cable should be terminated with a terminal resistor.

Generally, a passive resistance is used by connecting the signal lines via one 100 … 120 Ω resistor apiece to both bus ends.

For communication between 2 or more 750-652interface modules at low baud rates or with shorter line lengths, it is not necessary to use the terminal resistors.

The receiver built into the I/O module has a defined output state if both inputs are not connected and the data line has a short circuit or no transmitter is active (idle line).

If the 750-652 serial interface module works on a network with other communication partners, the wiring of a resistance-biasing network (known as a fail-safe network) to one line end can be necessary.

Figure 14: Bus Connection RS-485 Operating Mode with Biasing Network, Half-Duplex

With the use of the biasing resistors, it is guaranteed in this case that all receiver inputs A have the voltage difference of more than 200 mV to the inputs B if no transmitter is active. The oscillations of the receiver that can cause defective reception are thus prevented.

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44 Connect Devices WAGO-I/O-SYSTEM 750 750-652 Serial Interface RS-232 / RS-485

Biasing network

Check the necessity of an external biasing network before start-up. In modern devices with RS-485/RS-422 interface, this network is either already integrated or the devices have an improved RS-485/RS-422 receiver. The output of this receiver is in a defined state if the data line is short-circuited or not active.

7.2.3 RS-422 Operating Mode

Figure 15: Bus Connection RS-422 Operating Mode

For the RS-422 operating mode (point-to-point connection), the bus ends (at least for longer line lengths and greater baud rates) should be terminated with a terminal resistor.

Generally a passive resistance is used by connecting the signal lines via one 100 ... 120 Ω resistor apiece to both bus ends.

For communication between 2 or several 750-652 interface modules at low baud rates or with shorter line lengths, it is not necessary to use the terminal resistors.

Biasing network

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WAGO-I/O-SYSTEM 750 Connect Devices 45 750-652 Serial Interface RS-232 / RS-485

7.2.4 DMX Operating Mode

In the DMX operating mode, the wiring is based on the RS-485 operating mode.

7.2.5 Data Exchange Mode

Figure 16: Point-to-point Connection Between Two Nodes

In this mode, the contacts of the I/O modules to connect are connected to each other crosswise.

In the Data Exchange operating mode (point-to-point connection), a twisted-pair cable should be used at least for larger cable lengths. Two wire pairs and one ground wire are required. The ends of the cable should be terminated with a terminal resistor.

Generally, a passive resistance is used by connecting the signal lines via one 100 … 120 Ω resistor apiece to the ends of the of the cable (A-B).

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46 Commissioning WAGO-I/O-SYSTEM 750 750-652 Serial Interface RS-232 / RS-485

8 Commissioning

8.1 Configuration and Parameterization with WAGO-I/O-CHECK

The serial interface module is configured with the WAGO-I/O-CHECK software (version 3.3 or higher, WAGO-I/O-CHECK version 3.5.3 is required for firmware version 03 or higher). The software's basic functionality is described separately in the WAGO-I/O-CHECK documentation.

Component damage due to incorrect voltage level!

Incorrectly selected voltage levels can destroy the device!

Note when switching between operating modes that RS-232 and RS-485 use different voltage levels.

Switch off connected devices before changing operating modes! Make sure that devices you connect support the voltage level of the current operating mode!

8.1.1 RS-232 / RS-485 Serial Interface (Configuration Dialog)

Figure 17: Parameter Dialog

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WAGO-I/O-SYSTEM 750 Commissioning 47

Table 25: Toolbar

Button

Function

Description

Closes the active window. If you have changed

the I/O module.

750-652 Serial Interface RS-232 / RS-485

The parameter dialog is divided into the following areas:

• Title bar with item and item number of the selected I/O module, info area

with item number, designation, and version number and version date of the I/O module,

• Toolbar (1),

• Parameter range (2) and

• Status bar (3).

Status reports are output in the status display in the lower area of the configuration dialog.

8.1.2 Toolbar on the Configuration Dialog

The toolbar contains the following buttons:

Figure 18: Toolbar

Exit

Open

Save

Read

Write

settings, you will be asked to save these values in

Opens a file with saved parameters. WAGO-I/OCHECK shows the Open File dialog.

Saves the current parameters in a file. WAGO-I/OCHECK shows the Save File dialog.

Reads the current settings from the connected I/O module.

Writes the current parameters to the selected I/O module.

settings

Manual Version 1.4.0

Factory

Overwrites the locally-saved configuration and parameterization with factory settings.

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48 Commissioning WAGO-I/O-SYSTEM 750

Table 25: Toolbar

Button

Function

Description

Table 26: PI Size

Selection box

Settings

Process image size

8 bytes, 24 bytes*, 48 bytes

Default setting

750-652 Serial Interface RS-232 / RS-485

Configuration Sets the process image size.

Help Opens the WAGO-I/O-CHECK online help.

8.1.3 Process Image Size

To make settings on the "PI Mapping" (process image mapping) page, the process image size of the master must be set first.

Use the [Configuration] button on the toolbar to open the dialog for entering the process image size.

Figure 19: Process Image Size

Changes to the process image size!

Note that with changes to the process data length, the structure of the process image changes, and if necessary, changes to the configuration of the superior controller may be necessary.

The following selection box is displayed:

With the [Apply] button, you transfer the changed parameters to the non-volatile memory of the I/O module. A software reset is conducted so that the changes take effect. The dialog remains open.

Manual Version 1.4.0

With the [Default] button, you select the default setting for this I/O module. With the [Apply] button, you then transfer the parameters to the non-volatile memory of the I/O module.

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WAGO-I/O-SYSTEM 750 Commissioning 49

Table 27: Parameter Range

Selection box

Possible settings

Operating Mode

RS-232 / RS-485 half-duplex* / RS-422 full-duplex

duplex/250k4)

Transmission Rate [Baud]

300 baud / 600 baud / 1200 baud / 2400 baud /

38400 baud / 57600 baud / 115200 baud

Data Bits

8*/ 7

Parity

none* / odd / even

Stop bits

1* / 2

Flow Control

disabled* / XON/XOFF1) / RTS/CTS2) / RTS, lead and follow-on time4)

Continuous Send Mode

disabled* / release

Continuous Receive Mode

disabled* / release

750-652 Serial Interface RS-232 / RS-485

With the [Close] button, you close the configuration dialog without transferring any changed parameters to the non-volatile memory of the I/O module.

8.1.4 Parameter Range

Figure 20: Parameter Range

The following selection boxes are displayed in tabular form. The possible settings are described in more detail in the chapter “Function Description”.

/ data exchange RS-4224) / DMX half-

4800 baud / 9600 baud* / 19200 baud /

(Continuous Send)

(Continuous Receive)

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50 Commissioning WAGO-I/O-SYSTEM 750

Table 27: Parameter Range

Selection box

Possible settings

Switchover Time RS-4853)

100 µs* / 2 Characters / 4 Characters

Continuous Receive Timeout

2 Characters* / 4 Characters

Default setting

The setting is relevant for the operating mode RS-232/RS-422, full-duplex.

2) The setting is relevant for the operating mode RS-232.

The setting is relevant for the operating mode RS-485, half-duplex.

Firmware version 03 or higher

750-652 Serial Interface RS-232 / RS-485

Use of the CODESYS library "SerComm.lib"

Note that following settings for use of the I/O module with programmable fieldbus controllers and use of the CODESYS library "SerComm.lib" can be temporarily overwritten by the controller:

• Mode

• Baud rate

• Data bits, parity, number of stop bits

• Flow control

• Continuous send

The following values are not available if settings should be changed by the CODESYS library "SerComm.lib":

• Mode: Data Exchange, DMX

• Baud rate: 600 baud

• Flow control: RTS with lead/follow-on time

8.1.5 Setting the RS-232 / RS-485 Serial Interface

Open the configuration dialog for the serial interface module. To do so, execute the command Settings in the context menu of the I/O module (node view or navigation).

Important note:

Before changing the parameters you should save the current values in a parameter file. This way, in case the parameters are wrong, you can always fall back on the original values. Use the [Save] and [Open] buttons in the parameter dialog.

The serial I/O module is configured and prepared for communication in the configuration area.

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WAGO-I/O-SYSTEM 750 Commissioning 51 750-652 Serial Interface RS-232 / RS-485

In order to display the default values for this I/O module (except for the size of the process image), press the [Default] button. The values indicated can then be changed further.

To change settings in the serial I/O module, adjust the values in the configuration area.

Changed settings are marked with a change symbol (pen symbol) in order to indicate that these values no longer match the values originally queried by the module.

To transfer the new values to the I/O module, click the [Write] button.

You can also put the I/O module into another operating mode. Here the changed configuration is saved and the inputs and outputs of the I/O module are switched immediately according to the operating mode.

Input operating mode!

In case of a change of operating mode, a warning appears that points out that it may be necessary to change the wiring.

8.2 Configuration and Parameterization via GSD for PROFIBUS DP and PROFINET IO

Other methods are available for configuration depending on the fieldbus coupler/controller. These are described in the appendix.

8.3 Data Transfer

The following chapters describe data transfer in all operating modes for serial transmission and in the Data Exchange operating mode.

8.3.1 Example of Operating Modes for Serial Transmission

The control of the transmission and receipt operation is handled with the control and status byte. Requests are indicated by the change (toggle) of a bit. The successful processing is indicated by an assigned bit. It takes the value of the request bit.

Initialize I/O module:

• Setting of IR in control byte C0

• Initialization of the I/O module

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52 Commissioning WAGO-I/O-SYSTEM 750

As long as the initialization

Table 28: Initialization Bit

Control byte 0

Control byte 1

Output byte 0

Output byte 1

'0000.0100'

'0000.0000'

750-652 Serial Interface RS-232 / RS-485

• Blocking of the transmit and receive functions

• Deletion of the transmit and receive memory

• Loading of the configuration data in the serial I/O module

Transmit data:

• TR = TA: Writing of the characters to be transmitted in output bytes D0 to

• Number of characters to be transmitted is specified in OL0 to OL5

• Inversion and output of TR

• Transfer to the output buffer takes place when TR = TA

Receive data:

• RR ≠ RA: in input byte 0 to n characters are available

• Number of characters received is specified in IL0 to IL5

• Reading out of the characters in IL0 to IL5

• Inversion and output of RA

• Reading out has taken place when RR = RA

The transmission and receipt of data between controller and I/O module can take place simultaneously. The initialization request is executed with priority and immediately ends the transmission and receipt of data.

Reset initialization bit!

The initialization bit in control byte C0 must be reset. bit is set, no data is exchanged. The initialization bit can be reset simultaneously with transmission of the initial data.

Always read received data!

The input buffer of the I/O module is 80% full if the BUF_F bit is set in status byte 0. If the input buffer if full, the I/O module cannot receive any further data via the serial interface. Any data transmitted by an external device is lost.

8.3.2 Initialization

The I/O module is initialized.

The initialization bit is set in the control byte 0.

Manual Version 1.4.0

The execution of the initialization is acknowledged by the I/O module with the setting of the bit IA.

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WAGO-I/O-SYSTEM 750 Commissioning 53

Table 29: Initialization of the I/O Module

Status byte 0

Status byte 1

Input byte 0

Input byte 1

XXXX. X1XX'

'XXXX. 1XXX'

The I/O module is initialized.

Table 30: Data Exchange

Control byte 0

Control byte 1

Output byte 0

Output byte 1

'0000.0000'

Table 31: I/O Module Is Ready

Status byte 0

Status byte 1

Input byte 0

Input byte 1

'0XXX. X0XX'

'0XXX. 1XXX'

The I/O module is ready.

Table 32: Character string "Hello World"

Control byte 0

Control byte 1

Output byte 0

Output byte 1

'0011.0000'

'0000.0001'

"H" (0x48)

"a" (0x60)

Output byte 2

Output byte 3

Output byte 4

Output byte 5

"1" (0x6C)

"o" (0x6F)

0 x 20

Output byte 6

Output byte 7

Output byte 8

Output byte 9

"W" (0x87)

"e" (0x65)

"1" (0x6C)

"t" (0x74)

Output byte 10

Output byte 11

Output byte 12

Output byte 13

"!" 0 x 21

Table 33: Transmit Request Bit TR

Control byte 0

Control byte 1

Output byte 0

Output byte 1

'0011.0001'

'0000.0001'

"H" (0x48)

"a" (0x60)

Output byte 2

Output byte 3

Output byte 4

Output byte 5

"1" (0x6C)

"o" (0x6F)

0 x 20

Output byte 6

Output byte 7

Output byte 8

Output byte 9

"W" (0x87)

"e" (0x65)

"1" (0x6C)

"t" (0x74)

Output byte 10

Output byte 11

Output byte 12

Output byte 13

"!" 0 x 21

750-652 Serial Interface RS-232 / RS-485

Control requests data exchange:

The IA bit is reset by the I/O module.

8.3.3 Transmission of the Character String "Hello World!"

The eleven characters, the reset initialization bit, and the length 11 are transmitted.

The transmit request bit TR is inverted.

The data was transmitted to the output buffer as soon as TA = TR. Then additional characters can be transmitted.

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Table 34: Data Transfer

Status byte 0

Status byte 1

Input byte 0

Input byte 1

'0XXX.XXX0'

'0XXX. 1XXX'

The data transfer is still running.

'0XXX.XXX1'

'0XXX. 1XXX'

When the data transfer has

interface.

Table 35: Output Process Image

Control byte 0

Control byte 1

Output byte 0

Output byte 1

'0XXX XX0X

'0XXX.XXXX'

Table 36: Receive Data

Status byte 0

Status byte 1

Input byte 0

Input byte 1

0-xxx X (00x)

'0XXX. 1XXX'

There are no receive data available.

'0XX1. 001X'

'0XXX. 1XXX'

"W"

"A"

The data is available in the input bytes.

Table 37: Receive 2 Characters

Control byte 0

Control byte 1

Output byte 0

Output byte 1

'0XXX XX1X

'0XXX.XXXX'

Table 38: Receipt of Additional Characters

Status byte 0

Status byte 1

Input byte 0

Input byte 1

'0XXX. X01X'

'0XXX. 1XXX'

There are no receive data available.

'0XX1. 000X'

'0XXX. 1XXX'

"G"

"O"

The data is available in the input bytes.

Table 39: Output Process Image After Data Transfer

Control byte 0

Control byte 1

Output byte 0

Output byte 1

'0XXX XX0X

'0XXX.XXXX'

750-652 Serial Interface RS-232 / RS-485

taken place, the data is transmitted via the serial

8.3.4 Receiving the Character String "WAGO"

As soon as RA ≠ RR, characters are available in the input byte.

After the 2 characters have been processed, RA is inverted.

The receipt of additional characters is indicated by different values for RA and RR.

After the characters have been processed, RA is inverted.

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Table 40: Transmission of a Block of One to 512 Bytes

Control byte 0

Control byte 1

'0110.1001'

'0XXX. X101'

Controller fills the output buffer with 46 bytes and set bit

transmission.

Status byte 0

Status byte 1

'0XXX.X0X1'

'0000. 1XXX'

I/O module confirms the acceptance of the data.

Control byte 0

Control byte 1

'0110.1000'

'0XXX. X101'

Controller takes bit 0 (TR) of the control byte 0 back.

Status byte 0

Status byte 1

'0XXX.X0X0'

'0XXX. 0XXX'

I/O module begins with the data transmission via the serial interface.

Status byte 0

Status byte 1

'0XXX.X0X1'

'0000. 1XXX'

All data is transmitted via the serial interface.

Control byte 0

Control byte 1

'0XXX.0XX0'

'0XXX. 1XXX'

Controller takes bit 3 (TR) of the control byte 0 back.

750-652 Serial Interface RS-232 / RS-485

8.3.5 Operation with Continuous Send

8.3.5.1 Transmission of a Block of One to 512 Bytes

The output buffer is filled up with data up to number n (n ≤ 512 bytes)

To transmit the buffer content, the bit 3 (SC) of the control byte 0 is set by the controller. The I/O module begins with the data transmission and the bit 3 (BUF_E) of the status byte 1 is reset.

If all data is transmitted, the bit 3 (BUF_E) of the status byte 1 is set.

The controller takes bit 3 (SC) of the control byte 0 back from the controller. The end of the transmission from the I/O module is detected this way.

3 (SC) of the control byte 0 for the start of the

8.3.5.2 Transmission of a Block of More than 512 Bytes

The output buffer is filled up with data up to number 512 bytes.

To transmit the buffer content, the bit 3 (SC) of the control byte 0 is set by the controller. The I/O module begins with the data transmission and the bit 3 (BUF_E) of the status byte 1 is reset.

During transmission, the output buffer continues to be filled up by the controller.

Bit 3 (SC) of control byte 0 is set by the controller as long as data should be transmitted. The I/O module acknowledges data transmission by resetting bit 3 (BUF_E) in status byte 1.

Then bit 3 (SC) of control byte 0 is taken back by the controller. The end of the transmission from the I/O module is detected this way.

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Table 41: Transmission of a Block of More than 512 Bytes*)

Control byte 0

Control byte 1

'0110.1001'

'0XXX. X101'

Controller fills the output buffer with 46 bytes and set bit

I/O module.

Status byte 0

Status byte 1

'0XXX.X0X1'

'0000. 1XXX'

I/O module confirms the acceptance of the data.

Control byte 0

Control byte 1

'0110.1000'

'0XXX. X101'

Controller takes bit 0 (TR) of the control byte 0 back.

Status byte 0

Status byte 1

'0XXX.X0X0'

'0XXX. 0XXX'

I/O module begins with the data transmission via the serial interface.

Control byte 0

Control byte 1

'0110.1001'

'0XXX. X101'

Controller fills the output buffer with another 46 bytes of data.

Status byte 0

Status byte 1

'0XXX.X0X1'

'0000. 0XXX'

I/O module confirms the acceptance of the data.

Status byte 0

Status byte 1

'0XXX.X0X1'

'0000. 1XXX'

All data saved in the output buffer is transmitted via the serial interface.

Control byte 0

Control byte 1

'0110.1001'

'0XXX. X101'

Controller fills the output buffer with another 46 bytes of data.

Status byte 0

Status byte 1

'0XXX.X0X1'

'0000. 0XXX'

I/O module confirms the acceptance of the data.

Status byte 0

Status byte 1

'0XXX.X0X0'

'0XXX. 0XXX'

I/O module continues the data transmission via the serial interface.

Status byte 0

Status byte 1

'0XXX.X0X1'

'0000. 1XXX'

All data saved in the output buffer is transmitted via the serial interface.

Control byte 0

Control byte 1

'0XXX.0XX0'

'0XXX. 1XXX'

Controller takes bit 3 (SC) of the control byte 0 back.

The table shows the transmission method from the time at which more than 500 bytes is in the output buffer.

750-652 Serial Interface RS-232 / RS-485

NOTE

At higher baud rates, it cannot be ensured that more than 512 bytes of data are transmitted as a contiguous block!

3 (SC) of the control byte 0 for the start of the transmission. Bit 3 (SC) of the control byte 0 must always be set if the controller transmits more than 512 bytes of data to the

Important Note:

An X is used if the value is not relevant here. An XX means that the entire value is not relevant.

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Table 42: Process Data in the DMX Operating Mode Without Transfer Optimization

Process

length

Input data

Output data

8 bytes

Status byte 0

Control byte 0

Status byte 1

Control byte 1

Data byte 0*)

Data byte 0

DMX start byte (always 0)

Data byte 1*)

Data byte 1 (DMX channel 1)

Data byte 2*)

Data byte 2 (DMX channel 2)

… … D5

Data byte 5*)

Data byte 5 (DMX channel 5)

24 bytes

Data byte 6*)

Data byte 6 (DMX channel 6)

… … D21

Data byte 21*)

D21

Data byte 21 (DMX channel 21)

48 bytes

D22

Data byte 22*)

D22

Data byte 22 (DMX channel 22)

… … D45

Data byte 45*)

D45

Data byte 45 (DMX channel 45)

Not in use. In this mode, no data is received.

750-652 Serial Interface RS-232 / RS-485

8.3.6 DMX Application Example

8.3.6.1 Operation with Deactivated Continuous Send

In this mode, the I/O module only transmits the data for a limited number of DMX channels according to the set size of the process image (see table “Process data in the DMX operating mode without continuous send”). Higher refresh rates are then possible.

image

The transmission method is described in the chapter “Transmission of the Character String 'Hello World!'”

8.3.6.2 Operation with Activated Continuous Send

In this mode, the output buffer filled with the DMX start byte (always 0) and then with data for DMX channel 1 to 254.

The transmission method is described in the chapter “Function Description > … > “Continuous Transmission”.

Observe settings!

To ensure continuous transmission, the “Continuous Send” setting must be activated!

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8.3.7 Data Exchange Operating Mode Application Example

In the “Data Exchange” operating mode, the I/O module monitors process data exchange with the partner module. If the connection is interrupted for 200 ms or more, it generates a diagnosis in the status byte. This monitoring only takes into account if there is a connection between the I/O modules. As the user, you may want to check if the application that accesses the fieldbus node of the opposite side as a PLC application or via fieldbus has received the information sent.

You can easily implement this monitoring by reserving three bits in the data part of the process image for transmission of status information. Use bits 0, 1 and 2 of the first data byte, for example.

Use bit 0 as the “ON” signal on both sides.

1. Describe bit 0 in the process image (output) permanently with status 1.

2. Check if the “ON” signal is displayed correctly in the process image (input).

No connection if the status is “0”

If the status is 0, there is no connection with the opposite side and all data bytes of the process image (input) of the I/O module are invalid.

Use bit 1 as the “toggle” bit to send data to the opposite side.

3. Invert the sent “toggle” bit if you want to send new data.

If you have already sent data, you can only send new data if the opposite has acknowledged receipt. Use bit 2 as the “acknowledge” bit on both sides to signal data receipt to the respective opposite side.

4. Always invert the sent “acknowledge” bit if the received “toggle” bit has

changed.

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WAGO-I/O-SYSTEM 750 Diagnostics 59

Table 43: Diagnostics, Serial Operating Modes

Diagnostics

Event

Solution

Input buffer full

The I/O module receives

• Make sure that the application

• Reduce baud rate

Output buffer

The I/O module receives

• Check continuous send

side accepts data

Parity error

Data transmission was

• Check the configuration of the

• Eliminate interference

Overflow

Data loss has occurred.

• Reduce baud rate

Table 44: Diagnostics, Data Exchange

Diagnostics

Event

Solution

Wrong length

The I/O modules have

sizes

• Configure the same process

Checksum error

Data transmission was

process image.

• Use a shielded cable

• Eliminate interference

Timeout

The data transmission is

value 0.

• Check cable and clamping

750-652 Serial Interface RS-232 / RS-485

9 Diagnostics

9.1 Serial Operating Modes

data via the serial interface faster than accepted by the application.

• Reduce data traffic

• Use flow control

full

data faster from the application than it sends via the serial interface.

• Reduce data traffic

• Increase baud rate

• Make sure that the opposite

interrupted.

• Use a shielded cable

• Change wire routing

• Shorten cable

9.2 Data Exchange Operating Mode

always accepts data immediately

interface parameters

Manual Version 1.4.0

different process image

interrupted. The last valid value is retained in the

interrupted or has been interrupted for a longer period of time (see checksum error). The process image (input) has been overwritten with the

image size

• Change wire routing

• Shorten cable

points for uniformity

• Check the configuration of the I/O modules

• for checksum error: See Diagnostics “Checksum error”

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60 Use in Hazardous Environments WAGO-I/O-SYSTEM 750 750-652 Serial Interface RS-232 / RS-485

10 Use in Hazardous Environments

The WAGO-I/O-SYSTEM 750 (electrical equipment) is designed for use in Zone 2 hazardous areas.

The following sections include both the general identification of components (devices) and the installation regulations to be observed. The individual subsections of the “Installation Regulations” section must be taken into account if the I/O module has the required approval or is subject to the range of application of the ATEX directive.

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WAGO-I/O-SYSTEM 750 Use in Hazardous Environments 61 750-652 Serial Interface RS-232 / RS-485

10.1 Marking Configuration Examples

10.1.1 Marking for Europe According to ATEX and IEC-Ex

Figure 21: Side Marking Example for Approved I/O Modules According to ATEX and IECEx

Figure 22: Text Detail – Marking Example for Approved I/O Modules According to ATEX and IECEx.

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Table 45: Description of Marking Example for Approved I/O Modules According to ATEX and IECEx

Printing on Text

Description

TÜV 07 ATEX 554086 X IECEx TUN 09.0001 X

Approving authority and certificate numbers

Dust

Equipment group: All except mining

Category 3 (Zone 22)

Explosion protection mark

tc Dc

Type of protection and equipment protection level (EPL):protection by enclosure

IIIC

Explosion group of dust

T 135°C

Max. surface temperature of the enclosure (without a dust layer)

Mining

Equipment group: Mining

Category: High level of protection

Explosion protection mark

d Mb

Type of protection and equipment protection level (EPL): Flameproof enclosure

Explosion group for electrical equipment for mines susceptible to firedamp

Gases

Equipment group: All except mining

Category 3 (Zone 2)

Explosion protection mark

nA Gc

Type of protection and equipment protection level (EPL): Non-sparking equipment

nC Gc

Type of protection and equipment protection

interior

IIC

Explosion group of gas and vapours

Temperature class: Max. surface temperature 135°C

750-652 Serial Interface RS-232 / RS-485

Manual Version 1.4.0

level (EPL): Sparking apparatus with protected contacts. A device which is so constructed that the external atmosphere cannot gain access to the

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WAGO-I/O-SYSTEM 750 Use in Hazardous Environments 63 750-652 Serial Interface RS-232 / RS-485

Figure 23: Side Marking Example for Approved Ex i I/O Modules According to ATEX and IECEx.

Figure 24: Text Detail – Marking Example for Approved Ex i I/O Modules According to ATEX and IECEx.

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Table 46: Description of Marking Example for Approved Ex i I/O Modules According to ATEX and IECEx

Inscription Text

Description

TÜV 07 ATEX 554086 X

IECEx TUN 12.0039 X

Approving authority and certificate numbers

Dust

Equipment group: All except mining

3(1)D

Category 3 (Zone 22) equipment containing a safety device for a category 1 (Zone 20) equipment

3(2)D

Category 3 (Zone 22) equipment containing a safety device for a category 2 (Zone 21) equipment

Explosion protection mark

tc Dc

Type of protection and equipment protection level (EPL): protection by enclosure

[ia Da]

Type of protection and equipment protection level

circuits for use in Zone 20

[ib Db]

Type of protection and equipment protection level

circuits for use in Zone 21

IIIC

Explosion group of dust

T 135°C

Max. surface temperature of the enclosure (without a dust layer)

Mining

Equipment Group: Mining

M2 (M1)

Category: High level of protection with electrical circuits which present a very high level of protection

Ex d Mb

Explosion protection mark with Type of protection

enclosure

[ia Ma]

Type of protection and equipment protection level

electrical circuits

I Explosion group for electrical equipment for mines susceptible to firedamp

750-652 Serial Interface RS-232 / RS-485

IECEx TUN 09.0001X

TÜV 12 ATEX 106032 X

(EPL): associated apparatus with intrinsic safety

and equipment protection level (EPL): Flameproof

(EPL): associated apparatus with intrinsic safety

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WAGO-I/O-SYSTEM 750 Use in Hazardous Environments 65

Table 46: Description of Marking Example for Approved Ex i I/O Modules According to ATEX and IECEx

Gases

Equipment group: All except mining

3(1)G

Category 3 (Zone 2) equipment containing a safety device for a category 1 (Zone 0) equipment

3(2)G

Category 3 (Zone 2) equipment containing a safety device for a category 2 (Zone 1) equipment

Explosion protection mark

nA Gc

Type of protection and equipment protection level (EPL): Non-sparking equipment

[ia Ga]

Type of protection and equipment protection level

circuits for use in Zone 0

[ia Gb]

Type of protection and equipment protection level

circuits for use in Zone 1

IIC

Explosion group of gas and vapours

Temperature class: Max. surface temperature 135°C

750-652 Serial Interface RS-232 / RS-485

(EPL): associated apparatus with intrinsic safety

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66 Use in Hazardous Environments WAGO-I/O-SYSTEM 750

Table 47: Description of Marking Example for Approved I/O Modules According to NEC 500

Printing on Text

Description

CL I

Explosion protection group (condition of use category)

DIV 2

Area of application

Grp. ABCD

Explosion group (gas group)

Op temp code T4

Temperature class

750-652 Serial Interface RS-232 / RS-485

10.1.2 Marking for America According to NEC 500

Figure 25: Side Marking Example for I/O Modules According to NEC 500

Figure 26: Text Detail – Marking Example for Approved I/O Modules According to NEC 500

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WAGO-I/O-SYSTEM 750 Use in Hazardous Environments 67 750-652 Serial Interface RS-232 / RS-485

10.2 Installation Regulations

For the installation and operation of electrical equipment in hazardous areas, the valid national and international rules and regulations which are applicable at the installation location must be carefully followed.

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68 Use in Hazardous Environments WAGO-I/O-SYSTEM 750 750-652 Serial Interface RS-232 / RS-485

10.2.1 Special Conditions for Safe Use (ATEX Certificate TÜV 07 ATEX 554086 X)

1. For use as Gc- or Dc-apparatus (in zone 2 or 22) the Field bus Independent

I/O Modules WAGO-I/O-SYSTEM 750-*** shall be erected in an enclosure that fulfils the requirements of the applicable standards (see the marking) EN 60079-0, EN 60079-11, EN 60079-15 and EN 60079-31. For use as group I electrical apparatus M2 the apparatus shall be erected in an enclosure that ensures a sufficient protection according to EN 60079-0 and EN 60079-1 and the degree of protection IP64. The compliance of these requirements and the correct installation into an enclosure or a control cabinet of the devices shall be certified by an ExNB.

2. Measures have to be taken outside of the device that the rating voltage is not

being exceeded of more than 40 % because of transient disturbances.

3. Dip-switches, binary-switches and potentiometers, connected to the module

may only be actuated when explosive atmosphere can be excluded.

4. The connecting and disconnecting of the non-intrinsically safe circuits is

only permitted during installation, for maintenance or for repair purposes. The temporal coincidence of explosion hazardous atmosphere and installation, maintenance resp. repair purposes shall be excluded. This is although and in particular valid for the interfaces “Memory-Card”, “USB”, “Fieldbus connection”, “Configuration and programming interface”, “antenna socket”, “D-Sub”, “DVI-port” and the “Ethernet interface”. These interfaces are not energy limited or intrinsically safe circuits. An operating of those circuits is in the behalf of the operator.

5. For the types 750-606, 750-625/000-001, 750-487/003-000, 750-484 and

750-633 the following shall be considered: The Interface circuits shall be limited to overvoltage category I/II/III (non mains/mains circuits) as defined in EN 60664-1.

6. For replaceable fuses the following shall be considered: Do not remove or

replace the fuse when the apparatus is energized.

7. The following warnings shall be placed nearby the unit:

WARNING – DO NOT REMOVE OR REPLACE FUSE WHEN ENERGIZED WARNING – DO NOT SEPARATE WHEN ENERGIZED WARNING – SEPARATE ONLY IN A NON-HAZARDOUS AREA

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WAGO-I/O-SYSTEM 750 Use in Hazardous Environments 69 750-652 Serial Interface RS-232 / RS-485

10.2.2 Special Conditions for Safe Use (ATEX Certificate TÜV 12 ATEX 106032 X)

1. For use as Gc- or Dc-apparatus (in zone 2 or 22) the Field bus Independent

I/O Modules WAGO-I/O-SYSTEM 750-*** Ex i shall be erected in an enclosure that fulfils the requirements of the applicable standards (see the marking) EN 60079-0, EN 60079-11, EN 60079-15 and EN 60079-31. For use as group I electrical apparatus M2 the apparatus shall be erected in an enclosure that ensures a sufficient protection according to EN 60079-0 and EN 60079-1 and the degree of protection IP64. The compliance of these requirements and the correct installation into an enclosure or a control cabinet of the devices shall be certified by an ExNB.

2. Measures have to be taken outside of the device that the rating voltage is not

being exceeded of more than 40 % because of transient disturbances.

3. The connecting and disconnecting of the non-intrinsically safe circuits is

4. For the type the following shall be considered: The Interface circuits shall

be limited to overvoltage category I/II/III (non mains/mains circuits) as defined in EN 60664-1.

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70 Use in Hazardous Environments WAGO-I/O-SYSTEM 750 750-652 Serial Interface RS-232 / RS-485

10.2.3 Special Conditions for Safe Use (IEC-Ex Certificate TUN 09.0001 X)

1. For use as Gc- or Dc-apparatus (in zone 2 or 22) the Field bus Independent

I/O Modules WAGO-I/O-SYSTEM 750-*** shall be erected in an enclosure that fulfils the requirements of the applicable standards (see the marking) IEC 60079-0, IEC 60079-11, IEC 60079-15 and IEC 60079-31. For use as group I electrical apparatus M2 the apparatus shall be erected in an enclosure that ensures a sufficient protection according to IEC 60079-0 and IEC 60079-1 and the degree of protection IP64. The compliance of these requirements and the correct installation into an enclosure or a control cabinet of the devices shall be certified by an ExCB.

2. Measures have to be taken outside of the device that the rating voltage is not

being exceeded of more than 40 % because of transient disturbances.

3. DIP-switches, binary-switches and potentiometers, connected to the module

may only be actuated when explosive atmosphere can be excluded.

4. The connecting and disconnecting of the non-intrinsically safe circuits is

5. For the types 750-606, 750-625/000-001, 750-487/003-000, 750-484 and

750-633 the following shall be considered: The Interface circuits shall be limited to overvoltage category I/II/III (non mains/mains circuits) as defined in IEC 60664-1.

6. For replaceable fuses the following shall be considered: Do not remove or

replace the fuse when the apparatus is energized.

7. The following warnings shall be placed nearby the unit:

WARNING – DO NOT REMOVE OR REPLACE FUSE WHEN ENERGIZED WARNING – DO NOT SEPARATE WHEN ENERGIZED WARNING – SEPARATE ONLY IN A NON-HAZARDOUS AREA

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WAGO-I/O-SYSTEM 750 Use in Hazardous Environments 71 750-652 Serial Interface RS-232 / RS-485

10.2.4 Special Conditions for Safe Use (IEC-Ex Certificate IECEx TUN 12.0039 X)

1. For use as Gc- or Dc-apparatus (in zone 2 or 22) the Field bus independent

I/O Modules WAGO-I/O-SYSTEM 750-*** Ex i shall be erected in an enclosure that fulfils the requirements of the applicable standards (see the marking) IEC 60079-0, IEC 60079-11, IEC 60079-15, IEC 60079-31. For use as group I electrical apparatus M2 the apparatus shall be erected in an enclosure that ensures a sufficient protection according to IEC 60079-0 and IEC 60079-1 and the degree of protection IP64. The compliance of these requirements and the correct installation into an enclosure or a control cabinet of the devices shall be certified by an ExCB.

2. Measures have to be taken outside of the device that the rating voltage is not

being exceeded of more than 40 % because of transient disturbances.

3. The connecting and disconnecting of the non-intrinsically safe circuits is

4. For the type the following shall be considered: The Interface circuits shall

be limited to overvoltage category I/II/III (non mains/mains circuits) as defined in IEC 60664-1.

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72 Use in Hazardous Environments WAGO-I/O-SYSTEM 750 750-652 Serial Interface RS-232 / RS-485

10.2.5 Special Conditions for Safe Use According to ANSI/ISA 12.12.01

A. “This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D

or non-hazardous locations only.” B. “This equipment is to be fitted within tool-secured enclosures only.” C. “WARNING Explosion hazard - substitution of components may impair

suitability for Class I, Div. 2.” D. “WARNING – Do not disconnect equipment unless power has been

switched off or the area is known to be non-hazardous” has to be placed

near each operator accessible connector and fuse holder. E. When a fuse is provided, the following information shall be provided: “A

switch suitable for the location where the equipment is installed shall be

provided to remove the power from the fuse.” F. For devices with EtherCAT/Ethernet connectors “Only for use in LAN, not

for connection to telecommunication circuits.” G. “WARNING - Use Module 750-642 only with antenna module 758-910.” H. For Couplers/Controllers and Economy bus modules only: The instructions

shall contain the following: “The configuration interface Service connector

is for temporary connection only. Do not connect or disconnect unless the

area is known to be non-hazardous. Connection or disconnection in an

explosive atmosphere could result in an explosion.” I. Modules containing fuses only: “WARNING - Devices containing fuses

must not be fitted into circuits subject to over loads, e.g. motor circuits.” J. Modules containing SD card reader sockets only: “WARNING - Do not

connect or disconnect SD-Card while circuit is live unless the area is known

to be free of ignitable concentrations of flammable gases or vapors.”

Additional Information

Proof of certification is available on request. Also take note of the information given on the operating and assembly instructions. The manual, containing these special conditions for safe use, must be readily available to the user.

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WAGO-I/O-SYSTEM 750 Appendix 73

Table 48: Configuration

PI module type

Representatives of

PI data type Instances

Inp.

Outp.

75x-652 ser. interf. 8 bytes

Unsigned8[2] OctetString [6]

75x-652 ser. interf. 24 bytes

Unsigned8[2] OctetString [22]

75x-652 ser. interf. 48 bytes

Unsigned8[2] OctetString [46]

Table 49: Configuration

PI module

Represent

type

PI submodule

Process image

PI data type

Instances

Inp.

Outp

{UINT8[2], UINT8[6]} I/O

8 bytes

Unsigned8[2] OctetString [6]

{UINT8[2], UINT8[22]} I/O

24 bytes

Unsigned8[2] OctetString [22]

{UINT8[2], UINT8[46]} I/O

48 bytes

Unsigned8[2] OctetString [46]

750-652 Serial Interface RS-232 / RS-485

11 Appendix

11.1 Configuration and Parameterization via GSD for PROFIBUS DP and PROFINET IO

11.1.1 Configuration of the RS-232/RS-485 Interface

11.1.1.1 PROFIBUS DP (750-333, 750-343, 750-833) Fieldbus Coupler PROFINET IO (750-370) Fieldbus Coupler

When using the aforementioned PROFIBUS-DP and PROFINET-IO fieldbus couplers, the process image size is configured by selecting the corresponding PI module type.

the module type

75x-652

11.1.1.2 PROFINET IO (750-375, 750-377) Fieldbus Coupler

When using the aforementioned PROFIBUS-DP and PROFINET-IO fieldbus couplers, the process image size is configured by selecting the corresponding PI module / submodule type.

type

75x-652 serial interface

atives of the module

75x-652

type

length

1 1

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74 Appendix WAGO-I/O-SYSTEM 750 750-652 Serial Interface RS-232 / RS-485

11.1.2 Configuration of the RS-232/RS-485 Serial Interface

Apart from the RTS lead and follow-on time, the GSD file can be used to provide the I/O module on the PROFIBUS DP and PROFINET IO fieldbus coupler with all operating parameters.

Figure 27: Example of the PROFIBUS DP Fieldbus Coupler Configuration Dialog

Figure 28: Example of the 750-370 Fieldbus Coupler Configuration Dialog

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WAGO-I/O-SYSTEM 750 Appendix 75

Table 50: Specific Module / Channel Parameters for 75x-652

GSD File

WAGO-I/O-CHECK

Description

Value

Selection box

Value

Enhanced

according to the following settings

Operating Mode

(no equivalent)

DMX half-duplex/250k

Operating Mode

DMX halfduplex/250k

Mode

RS-232

Operating Mode

RS-232

RS-485 half-duplex*)

Operating Mode

RS-485 half-duplex*)

RS-422 full-duplex

Operating Mode

RS-422 full-duplex

Data exchange RS-422

Operating Mode

Data exchange RS-422

750-652 Serial Interface RS-232 / RS-485

Figure 29: Example of the 750-375 and 750-377 Fieldbus Coupler Configuration Dialog

11.1.2.1 All PROFIBUS DP and PROFINET IO Fieldbus Couplers

The following assignment applies to the parameters of the I/O module when using PROFIBUS-DP and PROFINET-IO fieldbus couplers.

Component damage due to incorrect voltage level!

Incorrectly selected voltage levels can destroy the device!

Note when switching between operating modes that RS-232 and RS-485 use different voltage levels.

Switch off connected devices before changing operating modes! Make sure that devices you connect support the voltage level of the current operating mode!

operating mode

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76 Appendix WAGO-I/O-SYSTEM 750

Table 50: Specific Module / Channel Parameters for 75x-652

GSD File

WAGO-I/O-CHECK

Description

Value

Selection box

Value

Baud rate

300

Transmission Rate [Baud]

300

1200

Transmission Rate [Baud]

1200

2400

Transmission Rate [Baud]

2400

4800

Transmission Rate [Baud]

4800

9600*)

Transmission Rate [Baud]

9600

19200

Transmission Rate [Baud]

19200

38400

Transmission Rate [Baud]

38400

57600

Transmission Rate [Baud]

57600

115200

Transmission Rate [Baud]

115200

600

Transmission Rate [Baud]

600

Data bits 8*)

Data Bits

8*) 7 Data Bits

Parity

none*)

Parity

none*)

odd

Parity

odd

straight

Parity

straight

Stop bits 1*)

Stop Bits

1*) 2 Stop Bits

Flow control

deactivated*)

Flow Control

disabled*)

XON/XOFF

Flow Control

XON/XOFF

RTS/CTS

Flow Control

RTS/CTS

RTS, lead/follow-on time

Flow Control

RTS, lead/follow-on time

Continuous send lock*)

Continuous Send Mode

disabled*)

release

Continuous Send Mode

release

Continuous lock*)

Continuous Receive Mode

disabled*)

release

Continuous Receive Mode

release

Switching time

100 us*)

Switchover Time RS-485

100 us*)

2 characters

Switchover Time RS-485

2 Characters

4 characters

Switchover Time RS-485

4 Characters

Monitoring time

2 characters*)

Continuous Receive Tiemout

2 Characters*)

4 characters

Continuous Receive Timeout

4 Characters

Default setting

750-652 Serial Interface RS-232 / RS-485

[Baud]

receive

RS-485

con. receive

con. = continuous

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WAGO-I/O-SYSTEM 750 Appendix 77

The aforementioned fieldbus couplers allow module-specific configuration of behavior at diagnosis. Table 51: General Module / Channel Parameters

Parameter

Value

Explanation

Diagnostics channel x

0 (lock)*)

The fieldbus coupler signals a diagnosis if the

fieldbus coupler.

1 (release)

Diagnostics reported by the I/O module lead to

coupler.

Default setting

Table 52: General Module / Channel Parameters

Parameter

Value

Explanation

Channel diagnostics

0 (lock)*)

The fieldbus coupler signals a diagnosis if the

coupler.

1 (release)

Diagnostics reported by the I/O module with

coupler in the diagnostics database.

Diagnostics: Top user

0 (lock)

The fieldbus coupler signals a diagnosis if the

coupler.

1 (released)*)

Diagnostics reported by the I/O module with

coupler in the diagnostics database.

Default settings

750-652 Serial Interface RS-232 / RS-485

11.1.2.2 PROFIBUS DP (750-333, 750-343, 750-833) Fieldbus Coupler PROFINET IO (750-370) Fieldbus Coupler

(x = 0)

I/O module reports the event:

• Overflow (input buffer)

Diagnostics reported by the I/O module do not lead to the signaling of a diagnosis by the

the signaling of a diagnosis by the fieldbus

11.1.2.3 PROFINET IO (750-375, 750-377) Fieldbus Coupler

The aforementioned fieldbus couplers allow module-specific configuration of behavior at diagnosis.

Channel x (x = 0)

I/O module reports the event:

• Overflow (input buffer)

Diagnostics reported by the I/O module do not lead to the signaling of a diagnosis or an entry in the diagnostics database by the fieldbus

activated station diagnostics and error type for the corresponding signal channel lead to dispatch of a diagnostic interrupt. The respective error is entered by the fieldbus

limit value exceeded Channel x (x = 0)

I/O module reports the event:

• Overflow (input buffer)

Diagnostics reported by the I/O module do not lead to the signaling of a diagnosis or an entry in the diagnostics database by the fieldbus

activated channel diagnostics and error type for the corresponding signal channel lead to dispatch of a diagnostic interrupt. The respective error is entered by the fieldbus

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78 List of Figures WAGO-I/O-SYSTEM 750 750-652 Serial Interface RS-232 / RS-485

List of Figures

Figure 1: View ....................................................................................................... 18

Figure 2: Data Contacts ......................................................................................... 19

Figure 3: Power Jumper Contacts ......................................................................... 20

Figure 4: CAGE CLAMP® Connectors................................................................. 22

Figure 5: Display Elements ................................................................................... 23

Figure 6: Schematic Diagram ................................................................................ 24

Figure 7: Internal Structure ................................................................................... 37

Figure 8: Insert I/O Module (Example) ................................................................. 39

Figure 9: Snap the I/O Module into Place (Example) ........................................... 39

Figure 10: Removing the I/O Module (Example) ................................................. 40

Figure 11: Connecting a Conductor to a CAGE CLAMP® ................................... 42

Figure 12: Point-to-point Connection Operating Mode RS-232 with RTS/CTS

Data Flow Control........................................................................................ 42

Figure 13: Bus Connection RS-485 Operating Mode, Half-Duplex ..................... 43

Figure 14: Bus Connection RS-485 Operating Mode with Biasing Network, Half-

Duplex .......................................................................................................... 43

Figure 15: Bus Connection RS-422 Operating Mode ........................................... 44

Figure 16: Point-to-point Connection Between Two Nodes ................................. 45

Figure 17: Parameter Dialog ................................................................................. 46

Figure 18: Toolbar ................................................................................................. 47

Figure 19: Process Image Size .............................................................................. 48

Figure 20: Parameter Range .................................................................................. 49

Figure 21: Side Marking Example for Approved I/O Modules

According to ATEX and IECEx .................................................................. 61

Figure 22: Text Detail – Marking Example for Approved I/O Modules

According to ATEX and IECEx. ................................................................. 61

Figure 23: Side Marking Example for Approved Ex i I/O Modules

According to ATEX and IECEx. ................................................................. 63

Figure 24: Text Detail – Marking Example for Approved Ex i I/O Modules

According to ATEX and IECEx. ................................................................. 63

Figure 25: Side Marking Example for I/O Modules According to NEC 500 ....... 66

Figure 26: Text Detail – Marking Example for Approved I/O Modules

According to NEC 500................................................................................. 66

Figure 27: Example of the PROFIBUS DP Fieldbus Coupler

Configuration Dialog ................................................................................... 74

Figure 28: Example of the 750-370 Fieldbus Coupler Configuration Dialog ....... 74

Figure 29: Example of the 750-375 and 750-377 Fieldbus Coupler

Configuration Dialog ................................................................................... 75

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WAGO-I/O-SYSTEM 750 List of Tables 79 750-652 Serial Interface RS-232 / RS-485

List of Tables

Table 1: Variants ..................................................................................................... 6

Table 2: Number Notation ....................................................................................... 9

Table 3: Font Conventions ...................................................................................... 9

Table 4: Compatibility List 750-0652 ................................................................... 16

Table 5: Legend for Figure “View” ...................................................................... 18

Table 6: Legend for Figure “Power Jumper Contacts” ......................................... 20

Table 7: Legend for Figure “CAGE CLAMP® Connectors” ................................ 22

Table 8: Legend for Figure “Display Elements” ................................................... 23

Table 9: Technical Data ‒ Device Data ................................................................. 25

Table 10: Technical Data ‒ Supply ....................................................................... 25

Table 11: Technical Data ‒ Communication ......................................................... 25

Table 12: Technical Data ‒ Interface .................................................................... 26

Table 13: Technical Data – Field Wiring .............................................................. 26

Table 14: Technical Data – Power Jumper Contacts ............................................ 26

Table 15: Technical Data – Data Contacts ............................................................ 26

Table 16: Technical Data – Climatic Environmental Conditions ......................... 26

Table 17: Process Data for Serial Transmission ................................................... 29

Table 18: Control Byte C0 .................................................................................... 30

Table 19: Status Byte S0 ....................................................................................... 30

Table 20: Control Byte C1 .................................................................................... 30

Table 21: Status Byte S1 ....................................................................................... 31

Table 22: Process Data in Data Exchange Mode .................................................. 31

Table 23: Control Byte C0 .................................................................................... 32

Table 24: Status Byte S0 ....................................................................................... 32

Table 25: Toolbar .................................................................................................. 47

Table 26: PI Size ................................................................................................... 48

Table 27: Parameter Range ................................................................................... 49

Table 28: Initialization Bit .................................................................................... 52

Table 29: Initialization of the I/O Module ............................................................ 53

Table 30: Data Exchange ...................................................................................... 53

Table 31: I/O Module Is Ready ............................................................................. 53

Table 32: Character string "Hello World" ............................................................. 53

Table 33: Transmit Request Bit TR ...................................................................... 53

Table 34: Data Transfer ......................................................................................... 54

Table 35: Output Process Image ........................................................................... 54

Table 36: Receive Data ......................................................................................... 54

Table 37: Receive 2 Characters ............................................................................. 54

Table 38: Receipt of Additional Characters .......................................................... 54

Table 39: Output Process Image After Data Transfer ........................................... 54

Table 40: Transmission of a Block of One to 512 Bytes ...................................... 55

Table 41: Transmission of a Block of More than 512 Bytes*) .............................. 56

Table 42: Process Data in the DMX Operating Mode Without Transfer

Optimization ................................................................................................ 57

Table 43: Diagnostics, Serial Operating Modes .................................................... 59

Table 44: Diagnostics, Data Exchange .................................................................. 59

Table 45: Description of Marking Example for Approved I/O Modules

According to ATEX and IECEx .................................................................. 62

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80 List of Tables WAGO-I/O-SYSTEM 750 750-652 Serial Interface RS-232 / RS-485

Table 46: Description of Marking Example for Approved Ex i I/O Modules

According to ATEX and IECEx .................................................................. 64

Table 47: Description of Marking Example for Approved I/O Modules

According to NEC 500................................................................................. 66

Table 48: Configuration ........................................................................................ 73

Table 49: Configuration ........................................................................................ 73

Table 50: Specific Module / Channel Parameters for 75x-652 ............................. 75

Table 51: General Module / Channel Parameters ................................................. 77

Table 52: General Module / Channel Parameters ................................................. 77

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WAGO-I/O-SYSTEM 750 81 750-652 Serial Interface RS-232 / RS-485

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WAGO Kontakttechnik GmbH & Co. KG

Postfach 2880 •

D-32385 Minden

Hansastraße 27 •

D-32423 Minden

Phone:

05 71/8 87 – 0

Fax:

05 71/8 87 – 1 69

E-Mail:

info@wago.com

Internet:

http://www.wago.com

WAGO 750-652, 750-468, 750-468/000-001, 750-468/000-200, 750-468/025-000 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

1 Notes about this Documentation

1.1 Validity of this Documentation

1.2 Copyright

1.3 Symbols

1.4 Number Notation

1.5 Font Conventions

2 Important Notes

2.1 Legal Bases

2.1.1 Subject to Changes

2.1.2 Personnel Qualifications

2.1.3 Use of the WAGO-I/O-SYSTEM 750 in Compliance with Underlying Provisions

2.1.4 Technical Condition of Specified Devices

2.2 Safety Advice (Precautions)

3 Device Description

3.1 View

3.2 Connectors

3.2.1 Data Contacts/Internal Bus

3.2.2 Power Jumper Contacts/Field Supply

3.2.3 CAGE CLAMP® Connectors

3.3 Display Elements

3.4 Operating Elements

3.5 Schematic Diagram

3.6 Technical Data

3.6.1 Device Data

3.6.2 Supply

3.6.3 Communication

3.6.4 Interface

3.6.5 Connection Type

3.6.6 Climatic Environmental Conditions

3.7 Approvals

3.8 Standards and Guidelines

4 Process Image

4.1 Operating Modes for Serial Transmission

4.2 Data Exchange Mode

5 Function Description

5.1 Operating Modes for Serial Transmission

5.1.1 Transmit Data

5.1.1.1 Continuous Transmission

5.1.2 Receive Data

5.1.2.1 Continuous Receipt

5.1.3 RS-232 Operating Mode

5.1.3.1 Flow Control Using XON-/XOFF Protocol

5.1.3.2 Flow Control Using RTS/CTS

5.1.3.3 Flow Control Using RTS/CTS, RTS with Lead/Follow-on Time

5.1.4 RS-485 Operating Mode

5.1.5 RS-422 Operating Mode

5.1.6 DMX Operating Mode

5.2 Data Exchange Operating Mode

6 Mounting

6.1 Mounting Sequence

6.2 Inserting and Removing Devices

6.2.1 Inserting the I/O Module

6.2.2 Removing the I/O Module

7 Connect Devices

7.1 Connecting a Conductor to the CAGE CLAMP®

7.2 Connection Examples

7.2.1 RS-232 Operating Mode

7.2.2 RS-485 Operating Mode

7.2.3 RS-422 Operating Mode

7.2.4 DMX Operating Mode

7.2.5 Data Exchange Mode

8 Commissioning

8.1 Configuration and Parameterization with WAGO-I/O-CHECK

8.1.1 RS-232 / RS-485 Serial Interface (Configuration Dialog)

8.1.2 Toolbar on the Configuration Dialog

8.1.3 Process Image Size

8.1.4 Parameter Range

8.1.5 Setting the RS-232 / RS-485 Serial Interface

8.2 Configuration and Parameterization via GSD for PROFIBUS DP and PROFINET IO

8.3 Data Transfer

8.3.1 Example of Operating Modes for Serial Transmission

8.3.2 Initialization

8.3.3 Transmission of the Character String "Hello World!"

8.3.4 Receiving the Character String "WAGO"

8.3.5 Operation with Continuous Send