WAGO Modular IO System INTERBUS S User manual

Modular I/O System
INTERBUS S
Manual
Technical description,
installation and
configuration
750-132
Version 2.2.1

ii • General
Modular I/O System
INTERBUS S
Copyright ã1997-2001 by WAGO Kontakttechnik GmbH
All rights reserved.
WAGO Kontakttechnik GmbH
Hansastraße 27
D-32423 Minden
Phone: [phone] – 0
Fax: [phone] – 1 69
E-Mail: [e-mail]
Web: http://www.wago.com
Technical Support
Phone: [phone] – 5 55
Fax: [phone] – 4 30
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.
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.

TABLE OF CONTENTS • iii
Modular I/O System
INTERBUS S
TABLE OF CONTENTS
Section 1: Explanations
Section 2: System Description INTERBUS S, Configuration,
Initial Starting, Diagnosis
Section 3: Digital Inputs
750-400, 750-401, 750-402, 750-403, 750-405, 750-406,
750-410, 750-411, 750-408, 750-409, 750-412, 750-413,
750-414, 750-415
750-404
Section 4: Digital Outputs
750-501, 750-502, 750-504, 750-516, 750-519
750-506
750-509
750-511
750-512, 750-513, 750-514, 750-517
Section 5: Analog Inputs
750-452, 750-454, 750-482, 750-484
750-456,
750-461, 750-481
750-462, 750-469
750-465, 750-466, 750-486,
750-467, 750-468, 750-487, 750-488
750-472, 750-474
750-476, 750-478
Section 6: Analog Outputs
750-550, 750-580
750-552, 750-554, 750-584
750-556
Section 7: End- and Supply Terminal Blocks
750-600, 750-614, 750-616
750-601, 750-602, 750-609, 750-610, 750-611, 750-612,
750-613, 750-615
750-622
Section 8: SSI Encoder Interface, Quadrature Encoder Interface
750-630, 750-631
Section 9: RS232, TTY, RS485
750-650, 750-651, 750-653
Section 0: Application in Explosive Environments

iv • Notes
Modular I/O System
INTERBUS S

INTERBUS S / General information
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1
FUNCTION
IMPORTANT!
For fast, trouble free installation and start up of the devices described in this manual, the
user should carefully read and follow the advice and explanations offered in this guide.
Explanation of symbols used:
The EXCLAMATION POINT symbol is used when:
a) improper handling could cause damage or destruction of the hard- or software
b) possible injury to persons when interfacing to dangerous process peripherals.
The FINGER symbol describes routines or gives advice for the efficient use of the
devices and optimization of the software.
The FUNCTION symbol refers to helpful notes which are necessary for the correct
function. These remarks should be followed.
The QUESTION MARK gives an explanation of terms.
The symbol BOOKS gives references to additional literature, manuals and data sheets.
The user is most important to us:
We place great importance on the quality and user-friendliness of our manuals. Should
you have any ideas or suggestions for improvement to the contents or graphical design,
we would be glad to receive your proposals.
Notice:
This manual, including all illustrations, is copyrighted. Any use of this manual beyond
the terms of copyright is not allowed. The reproduction, translation, or use of the
electronic and mechanical information is subject to written authorization from WAGO
Kontakttechnik GmbH. Violations will be prosecuted. WAGO Kontakttechnik GmbH
reserves the right of alternation and changes. All rights in case of granting patents or
protective rights are reserved to WAGO Kontakttechnik GmbH.
In the case of non-WAGO products no reference to patent rights is given, but their
existence is noted. The use of the products described in this manuals exclusively
intended for experts trained in PLC programming or electrical engineering, who are
familiar with the national electrical standards in force. WAGO Kontakttechnik GmbH
and overseas subsidiaries will not accept any liability for faulty actions and damages
which occur on WAGO or non-WAGO products when disregarding the information
given in this manual. Any change made in WAGO hard or software (for example entries
in a register) will result in an exclusion of liability on the part of WAGO Kontakttechnik
GmbH.

INTERBUS S / General information
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Table of contents chapter 2
1 The WAGO I/O SYSTEM 1
2 Buscoupler Interbus S 2
2.1 Buscoupler-Hardware 2
2.2 Supply voltage - Electronics 3
2.3 Supply voltage - Field Side 4
2.4 Bus connection and station address 5
3 Enclosure and technical data 8
4 Interbus S 9
4.1 Interface Modules 9
4.2 Configuration software 10
5 Configuration of the fieldbus node in the master
controller
5.1 Identification code
11
11
5.2 ID Code for WAGO I/O System 12
5.3 IBS CMD Software 13
5.4 Example of application 19
6 Starting of operation and diagnostics 21
7 General conditions 23
7.1 Tansport and storing conditions 23
7.2 Mechanical and climatic conditions 23
7.3 Isolation, class of protection and degree of protection 24
7.4 Electromagnetic compatibility 25
7.5 Power supply 25

Interbus / Introduction
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1 The WAGO I/O System
The WAGO I/O SYSTEM consists of various components which are capable of
providing modular and application specific fieldbus nodes for various fieldbusses.
I11.1 Setting up a fieldbus node with the WAGO I/O SYSTEM
General remark:
A fieldbus node consists in principle of a fieldbus coupler at the front end, a number of
special function modules and a termination module which is placed at the other end.
1 - Buscoupler
The Buscoupler forms the link between the fieldbus and the field devices with their I/O
functions. All control functions required for the faultless operation of the I/O functions
are carried out by the coupler. The connection to different fieldbus systems is
established by each of the corresponding Buscouplers, e.g. for PROFIBUS, INTERBUS
S, II/O LIGHTBUS, CAN, ModBus etc. In this way a change of the fieldbus system is
possible.
2 - Function modules
In the function modules, the incoming process data ais converted. Corresponding to the
different requirements, special function modules are available for a variety of functions.
There are digital and analog inputs and outputs and modules for special functions. The
modules are described in the following chapters.
3 - Termination module
A termination module is needed for faultless operation of the node. The termination
module is always placed as the last module in order to obtain a termination of the
fieldbus node. This module has no I/O function.

Interbus / Introduction
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Assembly of the WAGO I/O System
All components of the system can be snapped directly on a carrier rail according to EN
50022 (DIN 35).
When snapping the analog or digital components onto the rail, no special sequence must
be observed. The secure positioning and connection of the individual function modules
and the coupler is provided by a snap-in system. This snap-in system provides automatic
interlocking onto the DIN rail assembly. It is always possible to remove a function
module or the Buscoupler from the assembly by pulling the orange pull-tab.
Please note, that the power supply of the field side as well as the data transmission are
interrupted. It has to be ensured that the interruption of PE will not put personnel or
equipment in danger.
With a CAGE CLAMP, conductors with a cross section of 0.08 to 2.5mm2/AWG 18-14
can be connected. Vibration proof, fast and maintenance-free. You simply introduce a
screwdriver or an operating tool into the operating slot under the clamping unit. The
CAGE CLAMP spring is pressed down. You can now introduce the wire into the
clamping unit. Withdraw the operating tool and the conductor is automatically clamped.

Interbus / Introduction
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The clamping force adjusts automatically to the conductor cross section. The flat
clamping face of the CAGE CLAMP spring presses the conductor against the current
bar without damage. Any deformation or movement of the conductor is compensated,
thus eliminating the risk of a loose connection. The contact point between conductor
and CAGE CLAMP is well protected against corrosive deterioration. This connection is
made fast and, furthermore, it is maintenance-free. There is no need for costly periodical
examination of the connections.
The supply modules of the WAGO I/O system are partly equipped with a fuse holder.
This fuse holder can be pulled out in order to break the circuit of the following modules.
To do so, you first have to insert a screwdriver into one of the slots on both sides in
order to pull out the front side of the fuse holder.
The front side now being hinged down makes it possible to remove or to insert the fuse.
After that, you lift up the front side again and push the fuse holder back into its original
position.

INTERBUS S / Buscoupler
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2 Buscoupler - INTERBUS S
2.1 Buscoupler - Hardware
Ill. 2: The INTERBUS buscoupler
The 750-304 Interbus coupler consists of two major electronic sub systems:
left side:
This housing contains the electronics for the coupling to the bus, the processor
and the fieldbus connection. (ill. 2.1)
right side:
This housing contains the DC to DC converter and power distribution for the internal K
bus, local processor and external 24 V DC connections to other discrete I/O modules.
Illustration 2.2 identifies the 24 V DC connection points to supply voltage to I/O
modules. Illustration 2.3 identifies the ground connection.

INTERBUS S / Buscoupler
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2.2 Supply Voltage - Electronics
Ill. 3: Termination points for the power supply and the internal electronics
The nominal operating voltage of the Buscoupler and the control electronics in the
function modules is 5 V DC. The supply is connected to the first two CAGE CLAMPS
at the top of the coupler as seen in Ill. 3.
The 24 V DC supply voltage is generated by an internal voltage regulator (DC/DC
converter) and fed to the electronics (5 V DC). The electrical isolation of the external
bus system is made by utilizing an optocoupler.
Please note that the power supply for the control electronics in the function modules is
made automatically by the data contacts of the following module when it is snapped on
the assembly (ill. 3.1). The power supply to the attached I/O modules is provided by
gold-plated self-cleaning slide contacts. If an attached module is taken out of the
existing configuration, the connection via the K bus is broken and the coupler is able to
detect this.
WARNING
If a module is taken out of the existing configuration, there may be undefined states.
You should disconnect the power supply when changing anything in the configuration.

INTERBUS S / Buscoupler
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2.3 Supply Voltage - Field Side
Ill. 4: Termination points for the supply voltage - Field side
The connection of the supply voltage is electrically isolated from the internal
electronics. Two CAGE CLAMPS are always connected by a power contact. By this
way, the power supply is taken to different points of the configuration.
It is possible to supply the following at the termination points (Ill. 4):
Volts: 24 V DC - Amps: 10 A DC
WARNING!
120 and 230 V AC can only be supplied via modules 750-609, 750-611 and 750-612!
The supply modules which are permanently integrated on the buscouplers, can be
supplied with 24 V DC only. The current on the power contacts should be max. 10 A.
The voltage is automatically supplied when the function modules are snapped together.
Self-cleaning power jumper contacts (P.J.C.s) ensure safe connections (Ill. 4). Female
contacts (current supply) are integrated in the buscoupler and I/O housings. The male
contacts on the buscoupler and I/O housings supply the voltage to the I/O modules when
inserted together from left to right.
The ground (earth) contact makes first and breaks last conforming to electrical standards
and can be used as protective grounding.
Depending on the I/O function, some modules do not have P.J.C.s. It is important to
note this when assembling a node. Many modules require field side power, many do
not. Please review the circuit diagrams of the individual modules. An additional power
supply module may be necessary.

INTERBUS S / Buscoupler
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When using the supply module 750-601/602, the field supply from the bus coupler is
interrupted. From that point a new power supply connection is necessary to provide DC
to any additional I/O modules.
WARNING!
The ground ( earth) field side contact should be disconnected when testing the isolation.
Otherwise the results could be wrong or even the module could be destroyed.

INTERBUS S / Buscoupler
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2.4 Bus connection and station (node) address
Ill. 5: Bus connection
Fieldbus connection:
The Interbus interface is normally provided by D SUB connection according to US
Standard EIA RS485 for data transmission by wires.
Outgoing
D-SUB (OUT) PIN cable PIN Incoming D-SUB (IN)
/DO 6 green 6 /DO
DO 1 yellow 1 DO
/DI 7 pink 7 /DI
DI 2 gray 2 DI
COM 3 brown 3 COM
5 commoning wire
9 commoning wire
Table 1: Wire connection Interbus S
The connection point of the D SUB connector is lowered in such a way that after a
connector is installed placement in an 80mm high switchbox is possible.

INTERBUS 7a WAGO-I/O-SYSTEM 750
Configuration Interface
The configuration interface used for the communication with
WAGO-I/O-CHECK or for firmware upload is located behind the cover flap.
Configuration
interface
Fig. X-1: Configuration interface g01xx06e
The communication cable (750-920) is connected to the 4-pole header.
Warning
The communication cable 750-920 must not be connected or disconnected
while the coupler/controller is powered on!

INTEBUS S / Enclosure and specifications
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3 The Enclosure and Specifications
SYSTEM DATA:
750-304 750-324
Number of function modules 256 on request
Number of I/O points 4096 on request
Transmission medium shielded Cu-cable (5 x 0.25 mm²)
max. bus length 400 m
Baud rate 500 kBaud

INTEBUS S / Enclosure and specifications
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TECHNICAL DATA:
750-304
dig.+analog 750-324 digital
Number of function modules 64 32
Digital peripheral signals 256 64
Analog peripheral signals 32 ---
Configuration possibility via PC or control ---
Bus connection 2 D-SUB with protection against vibration
Voltage supply 24V DC (-15%/+20%)
Input current 105 mA typ; 900 mA max. 85 mA typ.; 500 mA max.
Internal current 400 mA 400 mA
Power jumper contacts blade / spring contact
slide contact, self-cleaning
Maximum current supplied to K-Bus
for internal module use 1.75 A on request
Voltage power jumper contacts 24 V DC
Current power jumper contacts 10A DC
Data contacts slide contacts, 1.5 u hard gold-plated
self-cleaning
Voltage drop via data contacts <1V with 64 wired special function modules
Housing material Polycarbonat, Polyamid 6.6
Marking standard markers WAGO BR247/248
marker cards 8 x 47mm
Wire connection CAGE CLAMP; 0.08mm2-2.5mm2/AWG 28 -14
Mounting position any position
Type of protection IP 20
Isolation 500 V system / power supply
Operating temperature 0°C...+55°C
Dimensions (mm) W x H x L 51 x 65* x 100 (*from upper edge of the carrier rail)

INTEBUS S / Enclosure and specifications
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Interbus S buscoupler with extended diagnostics 750-304/000-001
The Interbus S buscoupler with no. 750-304/000-001 has the possibility of extented
diagnostic functions. The technical data is the same as 750-304.
Different from the standard buscoupler, a word for diagnostic messages is put into the
input data process image and a word for the control of the diagnostic input is put into
the output data process image.
The maximum number of input and output modules is reduced by the additional
diagnostic function because Interbus S transmits only 31 words of a process image.
Order of the diagnostic status word:
Bit of the
status word1514131211109876543210
error error code (s. table) Channel Module
The error code is shown in the following table:
Error code Description
0 unknown fault
5 defective fuse
10 broken wire
15 short circuit
Channel: This is the location for the fault input of a module. The counting is done in the
same way as numbering channels.
Module: This is the number of the module. Counting starts at the fieldbus coupler. The
first module attached to the coupler is module 0.
The diagnostic control word is for diagnostic actions. E.g. error messages can be cleared
in this way.
Order of the diagnostic control word:
Bit of the
control word 1514131211109876543210
Actions
The actions are coded as follows:
Actions Description
0x00 (0) no action
0x01 (1) Acknowledge diagnostic control word
0x80 (128) Clears all error messages in the buffer

INTERBUS S / Interbus S
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4 INTERBUS S
The Interbus S system (DIN 19245 part 1.2) is set up as a data ring with a central master
slave access procedure. All modules are understood as one logical module. Each partner
receives data at its input and sends it to the next partner at its output. There is no
addressing with a data frame because each partner knows by special control signals
(CLOCK, RESET, SELECT, CONTROL) where it is placed in the ring. So there is no
bus address. „Addressing“ is done via the physical place in the system.
Interbus S has the structure of a spatially distributed shift register. Each cycle is input
and output at the same time. While the master gives output data to the shift register, it
gets input data from the other end of the ring.
Each part of Interbus S has an ID register. This register keeps information about the type
of module, the number of I/O registers and the status and error information.
Interbus S has two general operating modes:
1) ID cycle
The interface module of all devices connected to the bus system reads out the ID register
in the ID cycle and builds up the process image with the aid of this information. The
cycle serves as an initialization and is carried out on request.
2) Data cycle
Within the data cycle all input data from the registers is transferred from all devices into
the master card (Host Controller) and all output data from the master card (Host
controller) to the devices.
4.1 Master Cards (Scanners, Host Controllers)
The operation of the master is carried out in most cases via a central controller like a
PLC, PC or NC. Connection to the remote stations is made via master cards.
Common master modules are:
- Phoenix IBS S5 DCB/I-T
- Phoenix IBS S5 DSC/I-T
- Phoenix 100 CB-T
- Hilscher CIF 30 (via Synergetic Micro Systems in USA)

INTERBUS S / Interbus S
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12
4.2 Configuration software
In order to make the connection between a PLC or PC and the remote stations, the
master cards must be configured with the individual station data.
For this, the following software packages are available. For example, the following are
available from Phoenix:
- IBS SYS SWT
- IBS CMD SWT