WAGO 750-651 User manual

Fieldbus Independent

I/O Modules

TTY-Interface 20mA Current Loop

750-651 (/xxx-xxx)

Manual

Version 1.0.2

ii • General

WAGO-I/O-SYSTEM 750

I/O Modules

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: [email protected]

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: [email protected]

Every conceivable measure has been taken to ensure the correctness and com-

pleteness of this documentation. However, as errors can never be fully ex-

cluded, we would appreciate any information or ideas at any time.

E-Mail: [email protected]

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 trademark or patent protected.

Content •iii

WAGO-I/O-SYSTEM 750

I/O Modules

CONTENT

1Important Comments ................................................................................. 4

1.1 Legal Principles........................................................................................4

1.1.1 Copyright ............................................................................................. 4

1.1.2 Personnel Qualification ....................................................................... 4

1.1.3 Intended Use ........................................................................................ 4

1.2 Symbols .................................................................................................... 5

1.3 Number Notation...................................................................................... 5

1.4 Safety Notes ............................................................................................. 6

1.5 Scope ........................................................................................................ 6

2I/O Modules ................................................................................................. 7

2.1 Special Modules ....................................................................................... 7

2.1.1 750-651 (/xxx-xxx) [TTY-Interface 20mA Current Loop] ................ 7

2.1.1.1 View................................................................................................ 7

2.1.1.2 Variations........................................................................................ 7

2.1.1.3 Description...................................................................................... 8

2.1.1.4 Display Elements ............................................................................ 9

2.1.1.5 Schematic Diagram......................................................................... 9

2.1.1.6 Technical Data .............................................................................. 10

2.1.1.7 Functional description................................................................... 11

2.1.1.8 Process Image ...............................................................................13

2.1.1.9 Datatransfer................................................................................... 14

2.1.1.9.1 Example....................................................................................15

4 •Important Comments

Legal Principles

WAGO-I/O-SYSTEM 750

I/O Modules

1 Important Comments

To ensure fast installation and start-up of the units described in this manual,

we strongly recommend that the following information and explanations are

carefully read and abided by.

1.1 Legal Principles

1.1.1 Copyright

This manual is copyrighted, together with all figures and illustrations

contained therein. Any use of this manual which infringes the copyright

provisions stipulated herein, is not permitted. Reproduction, translation and

electronic and photo-technical archiving and amendments require the written

consent of WAGO Kontakttechnik GmbH & Co. KG. Non-observance will

entail the right of claims for damages.

WAGO Kontakttechnik GmbH & Co. KG reserves the right to perform

modifications allowed by technical progress. In case of grant of a patent or

legal protection of utility patents all rights are reserved by WAGO

Kontakttechnik GmbH & Co. KG. Products of other manufacturers are always

named without referring to patent rights. The existence of such rights can

therefore not be ruled out.

1.1.2 Personnel Qualification

The use of the product detailed in this manual is exclusively geared to

specialists having qualifications in PLC programming, electrical specialists or

persons instructed by electrical specialists who are also familiar with the valid

standards. WAGO Kontakttechnik GmbH & Co. KG declines all liability

resulting from improper action and damage to WAGO products and third party

products due to non-observance of the information contained in this manual.

1.1.3 Intended Use

For each individual application, the components supplied are to work with a

dedicated hardware and software configuration. Modifications are only

permitted within the framework of the possibilities documented in the

manuals. All other changes to the hardware and/or software and the non-

conforming use of the components entail the exclusion of liability on part of

WAGO Kontakttechnik GmbH & Co. KG.

Please direct any requirements pertaining to a modified and/or new hardware

or software configuration directly to WAGO Kontakttechnik GmbH & Co.

KG.

Important Comments •5

Symbols

WAGO-I/O-SYSTEM 750

I/O Modules

1.2 Symbols

Danger

Always abide by this information to protect persons from injury.

Warning

Always abide by this information to prevent damage to the device.

Attention

Marginal conditions must always be observed to ensure smooth operation.

ESD (Electrostatic Discharge)

Warning of damage to the components by electrostatic discharge. Observe

the precautionary measure for handling components at risk.

Note

Routines or advice for efficient use of the device and software optimization.

More information

References on additional literature, manuals, data sheets and INTERNET

pages

1.3 Number Notation

Number Code Example Note

Decimal 100 normal notation

Hexadecimal 0x64 C notation

Binary '100'

'0110.0100'

Within ',

Nibble separated with dots

6 •Important Comments

Safety Notes

WAGO-I/O-SYSTEM 750

I/O Modules

1.4 Safety Notes

Warning

Switch off the system prior to working on bus modules!

In the event of deformed contacts, the module in question is to be replaced, as

its functionality can no longer be ensured on a long-term basis.

The components are not resistant against materials having seeping and

insulating properties. Belonging to this group of materials is: e.g. aerosols,

silicones, triglycerides (found in some hand creams).

If it cannot be ruled out that these materials appear in the component

environment, then additional measures are to be taken:

- installation of the components into an appropriate enclosure

- handling of the components only with clean tools and materials.

Attention

Cleaning of soiled contacts may only be done with ethyl alcohol and leather

cloths. Thereby, the ESD information is to be regarded.

Do not use any contact spray. The spray may impair the functioning of the

contact area.

The WAGO-I/O-SYSTEM 750 and its components are an open system. It

must only be assembled in housings, cabinets or in electrical operation

rooms. Access must only be given via a key or tool to authorized qualified

personnel.

The relevant valid and applicable standards and guidelines concerning the

installation of switch boxes are to be observed.

ESD (Electrostatic Discharge)

The modules are equipped with electronic components that may be destroyed

by electrostatic discharge. When handling the modules, ensure that the

environment (persons, workplace and packing) is well grounded. Avoid

touching conductive components, e.g. gold contacts.

1.5 Scope

This manual describes the Digital Input Module 750-651 (/xxx-xxx) TTY-

Interface 20mA Current Loop of the modular WAGO-I/O-SYSTEM 750.

Handling, assembly and start-up are described in the manual of the Fieldbus

Coupler. Therefore this documentation is valid only in the connection with the

appropriate manual.

750-651 (/xxx-xxx) [TTY-Interface 20mA Current Loop] • 7

View

WAGO-I/O-SYSTEM 750

Busklemmen

2 I/O Modules

2.1 Special Modules

2.1.1 750-651 (/xxx-xxx) [TTY-Interface 20mA Current Loop]

2.1.1.1 View

TxD

RxD

13 14

750-651

TxD

RxD

TxD

Data contacts

RxD

TxD

Function

TxD

RxD

___

Receiver

Transmitter

Fig. 2.1.1-1: TTY-Interface 750-651 g065100e

2.1.1.2 Variations

Item-No. Designation Description

750-651 TTY/ 9600/ N/ 8/ 1 Baud rate: 9600 baud,

Parity: none, data bits: 8, stop bits: 1

750-651/000-001 TTY/ 9600/ N/ 8/ 1/

5 byte

Baud rate: 9600 baud,

Parity: none, data bits: 8, stop bits: 1,

user data: 5 byte

750-651/000-002 TTY/ 9600/ E/ 8/ 1 Baud rate: 9600 baud,

Parity: even, data bits: 8, stop bits: 1

750-651/000-003 TTY/ 1200/ N/ 8/ 1 Baud rate: 1200 baud,

Parity: none, data bits: 8, stop bits: 1

8 • 750-651 (/xxx-xxx) [TTY-Interface 20mA Current Loop]

Description

WAGO-I/O-SYSTEM 750

Busklemmen

2.1.1.3 Description

This interface allows the connection of devices which are equipped with a

20 mA current interface.

The wiring to the communication partner is made by the connections TxD,

/TxD, RxD and /RxD.

The interface is working in active, semi-active or passive operation mode. The

module communicates with the control unit over the fieldbus coupler/-

controller.

The active communication channel works independently of the higher-level

fieldbus system and allows full duplex operation up to 19200 baud.

Three green LEDs signal readiness for operation and troublefree internal bus

communication as well as the condition of the signal transmission.

The TTY interface guarantees high interference immunity because of the

electrical isolation and the driven loop current.

Any configuration of the specialty modules is possible when designing the

fieldbus node. Grouping of module types is not necessary.

Attention

This module has no power contacts. For field supply to downstream I/O

modules, a supply module will be needed.

The TTY-Interface module 750-651 and its variations can be used with all

couplers/controllers of the WAGO-I/O-SYSTEM 750 (except for the economy

types 750-320, -323, -324 and -327).

This description is valid from hardware and software version XXXX3A03...

and up. The version is specified in the manufacturing number, which is part of

the lateral marking on the module.

750-651 (/xxx-xxx) [TTY-Interface 20mA Current Loop] • 9

Display Elements

WAGO-I/O-SYSTEM 750

Busklemmen

2.1.1.4 Display Elements

LED Channel State Function

off No operational readiness or the

internal data bus communication is

interrupted

green

Function

on Operational readiness and trouble-

free internal data bus

communication

off Loop current ≤2 mA( SPACE)B

green

TxD

on Loop current ≥12 mA (MARK)

off Loop current ≤2 mA( SPACE)

Fig. 2.1.1-2: Display

Elements g065002x

green

RxD

on Loop current ≥12 mA (MARK)

2.1.1.5 Schematic Diagram

TxD TxD

RxD RxD

TxD

RxD

Function

Logic

TTY

___

750-651

Fig. 2.1.1-3: TTY-Interface 750-651 g065101e

10 • 750-651 (/xxx-xxx) [TTY-Interface 20mA Current Loop]

Technical Data

WAGO-I/O-SYSTEM 750

Busklemmen

2.1.1.6 Technical Data

Module Specific Data

Transmission channel 1 TxD / 1 RxD, full duplex

Baud rate 1200 ... 19200 baud

Bit transmission MARK: I ≥12 mA, SPACE: I ≤2 mA

Load impedance < 500 Ω

Line length max. 1,2 kBd

≤800 m

2,4 kBd

≤400 m

9,6 kBd

≤100 m

Buffer 128 bytes in / 16 bytes out

Current consumption (internal) 55 mA

Voltage supply via system voltage DC/DC

Isolation 500 V (System/Supply)

Bit width 1 x 40 bits data

1 x 8 bits control/status

Dimensions (mm) W x H x L 12 x 64* x 100

* from upper edge of 35 DIN rail

Weight ca. 55 g

Standards and Regulations (cf. Chapter 2.2 of the Coupler/Controller Manual)

EMC-Immunity to interference (CE) acc. to EN 50082-2 (96)

EMC-Emission of interference (CE) acc. to EN 50081-1 (93)

Approvals (cf. Chapter 2.2 of the Coupler/Controller Manual)

CULUS (UL508)

ABS (American Bureau of Shipping)

BV (Bureau Veritas)

DNV (Det Norske Veritas) Cl. B

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

KR (Korean Register of Shipping)

LR (Lloyd's Register) Env. 1, 2, 3, 4

NKK (Nippon Kaiji Kyokai)

RINA (Registro Italiano Navale) (only for 750-651)

CULUS (UL1604) Class I Div2 ABCD T4A

KEMA II 3 G EEx nA II T4

Conformity Marking

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