Siemens SIMATIC IM 178-4 User manual

Preface, Contents
Part 1: User Information
Product Overview 1
Installing and Removing the
Module 2
Wiring 3
Parameter Assignment 4
Preparing for Startup 5
Part 2: Reference Section
Functions of the IM 178-4 6
Diagnostics 7
Appendix
Technical Specifications A
Configuration and
Parameter Assignment
Frame for the IM 178-4 B
Glossary, Index
IM 178-4
Manual
This manual is part of the product
with order number:
6ES7 178-4BH00-0AE0
SIMATIC

Index-2 IM178-4
C79000-G7076-C178-01
!Danger
indicatesthatdeath,severepersonalinjuryorsubstantialpropertydamagewill resultif proper
precautionsare nottaken.
!Warning
indicatesthatdeath,severepersonalinjuryorsubstantialpropertydamagecan resultifproperprecau-
tions are not taken.
!Caution
indicatesthat minor personal injury or propertydamage can result if proper precautionsare not taken.
Note
drawsyourattentiontoparticularlyimportantinformationontheproduct,handlingtheproduct,ortoa
particularpartofthedocumentation.
Qualified Personnel
Only qualifiedpersonnel should be allowed to install and work on this equipment. Qualified persons are
definedas persons who are authorized tocommission, to ground, and to tagcircuits, equipment, and
systems in accordance with established safety practices and standards.
Correct Usage
Notethefollowing:
!Warning
This device may only be used for the applications described in the catalog or the technical description,
andonly in connection with devices or componentsfrom other manufacturers which have been approved
orrecommendedbySiemens.
This product can only function correctly and safely if it is transported, stored, set up, and installed
correctly,andoperatedand maintainedasrecommended.
Trademarks SIMATICR, SIMATIC HMIRand SIMATIC NETRare registered trademarks of SIEMENS AG.
Third parties using for their own purposes any other names in this document which refer to trademarks
mightinfringeupontherightsofthetrademarkowners.
Safety Guidelines
This manual contains notices which you should observe to ensure your own personal safety, as well as to
protectthe product and connected equipment. These notices are highlighted in the manual by a warning
triangle and are marked as follows according to the level of danger:
We have checked the contents of this manual for agreement with the
hardware and software described. Since deviations cannot be precluded
entirely, we cannot guarantee full agreement. However, the data in this
manual are reviewed regularly and any necessary corrections included in
subsequent editions. Suggestions for improvement are welcomed.
Disclaimer of LiabilityCopyright E Siemens AG 1998 All rights reserved
The reproduction, transmission or use of thisdocument or itscontents isnot
permitted without express written authority. Offenders will be liable for
damages.Allrights,including rightscreatedbypatentgrantor registrationof
a utility model or design, are reserved.
Siemens AG
Bereich Automatisierungs- und Antriebstechnik
Geschaeftsgebiet Industrie Automatisierungssystem
Postfach 4848, D- 90327 Nuernberg ESiemensAG 1998
Subject to change without prior notice.
SiemensAktiengesellschaft C79000-G7076-C178

iii
IM178-4
C79000-G7076-C178-01
Preface
Purpose of the Documentation
This manual describes all the steps necessary to use the function module
IM 178-4. It will help you to become familiar with the functions of the IM 178-4
quickly and effectively.
Content of the Manual
This manual describes the hardware and software of the IM 178-4. It deals with the
following topics:
SProduct overview
SInstallation and removal of the module
SWiring
SParameter assignment
SStarting up
SFunctions
SDiagnostics
SAppendix
Audience
The manual is intended for the following audience:
SFitters
SProgrammers
SCommissioning engineers
SService and maintenance personnel
Applicability of the Manual
This manual contains the description of the function module IM 178-4 valid at the
time of publication. We reserve the right to describe modifications in the
functionality of the IM 178-4 in a Product Information leaflet.

Preface
iv IM178-4
C79000-G7076-C178-01
Finding Your Way in the Manual
To help you find specific information quickly, the manual includes the following :
SAt the start of the manual, you will find a complete table of contents.
SIn the Appendix, you will find a glossary in which the most important
terminology used in the manual is explained.
SAt the end of the manual, you will find a comprehensive index with which you
can locate topics and specific information quickly.
Other Literature Required
To understand this manual, you should also be familiar with the manual ET 200
Distributed I/O System .
Standards
The S7-300 programmable controller complies with the standard IEC 1131.
Recycling and Disposal
The SIMATIC S7-300 is an environmentally friendly product!
The SIMATIC S7-300 has the following environmental features:
SPlastic casing highly fireproof despite halogen–free flame protection
SLabeled by laser (in other words no unnecessary labels)
SPlastic materials indicated in compliance with DIN 54840
SLess material used due to small dimensions, less components due to
integration in ASICs
The SIMATIC S7-300 is suitable for recycling due to its low pollutant content .
For environmentally friendly recycling and disposal of your old SIMATIC PLC using
the most modern methods, contact:
Siemens Aktiengesellschaft
Anlagenbau und Technische Dienstleistungen
ATD TD 3 Kreislaufwirtschaft
Postfach 32 40
D-91050 Erlangen
Germany
Phone: ++49 / 91 31 / 73 36 98
Telefax: ++ 49 / 91 31 / 72 66 43
This Siemens department offers individual counseling and a comprehensive and
flexible disposal system at a fixed price. Following disposal, you receive a
breakdown of the materials and a certification of the materials.

Preface
v
IM178-4
C79000-G7076-C178-01
You can also order the entire SIMATIC S7 documentation on a CD-ROM.
Further Support
If you have questions about using the product described in the manual and cannot
find the answer here, please contact your local Siemens representative. You will
find the addresses in the appendix ”SIEMENS Worldwide” in the ”S7-300, M7-300
Programmable Controller, Hardware and Installation, CPU Data” manual .
If you have questions or comments about the manual itself, please complete the
reply card at the end of the manual and send it to address shown. Please take a
few minutes to give your own personal assessment of the manual on the reply
card.
To familiarize users with the SIMATIC automation systems, we offer a variety of
training courses. If you are interested in these courses, please contact your
Regional Training Center or the Central Training Center in D-90327 Nürnberg,
Germany, Tel. ++49/911/895 3154.
The Latest Information
You can always obtain the very latest information about SIMATIC products from
the following sources:
SOn the Internet: http://www.aut.siemens.de/
SBy calling fax polling no. 08765-93 00 5000
Our SIMATIC Customer Support also supports you with up-to-date information and
downloads, that you may find helpful when using SIMATIC products:
SOn the Internet: http://www.aut.siemens.de/simatic–cs
SIn the SIMATIC Customer Support Mailbox: number
[phone]
If you connect to the mailbox, use a modem with up to V.34
(28.8 Kbauds), with the following parameter settings:
8, N, 1, ANSI, or dial on ISDN (x.75, 64 Kbps).
SIMATIC Customer Support is available at the following phone and fax numbers or
e–mail addresses. You can also send enquiries by mail on the Internet or by mail to
the mailbox number above.
CD-ROM

Preface
vi IM178-4
C79000-G7076-C178-01
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vii
IM178-4
C79000-G7076-C178-01
Contents
1 Product Overview 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 What Can the IM 178-4 Do? 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Fields of Application of the IM 178-4 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 The Hardware of the IM 178-4 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Installing and Removing the Module 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Wiring 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Pinout of the Front Connector 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Description of the Individual Pins (Notes, Explanations) 3-4. . . . . . . . . . . . . . .
3.3 Wiring the Front Connector 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Wiring and Connecting the Bus Connector 3-8. . . . . . . . . . . . . . . . . . . . . . . . . .
4 Parameter Assignment 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 Methods of Assigning Parameters to the IM 178-4 4-1. . . . . . . . . . . . . . . . . . .
4.2 GSx File 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Preparing for Startup 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1 Setting the PROFIBUS Address of the IM 178-4 5-1. . . . . . . . . . . . . . . . . . . . .
5.2 Checklist of the Mechanical Construction 5-3. . . . . . . . . . . . . . . . . . . . . . . . . . .
5.3 Checklist for Configuration/Parameter Assignment 5-3. . . . . . . . . . . . . . . . . . .
6 Functions of the IM 178-4 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1 Description of the Functions 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1.1 Cyclic Processing 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1.2 Error Monitoring 6-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.2 User Data Interface 6-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Diagnostics 7-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1 Status and Diagnostic LEDs 7-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2 Diagnostic Data of the IM 178-4 7-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.1 Structure of Slave Diagnostics 7-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.2 Structure of the First 6 Bytes of the Slave Diagnostic Data 7-4. . . . . . . . . . . .
7.2.3 Structure of the ID-Related and Device-Related Slave Diagnostic Data 7-6.

Contents
viii IM178-4
C79000-G7076-C178-01
A Technical Specifications A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.1 Technical Data of the IM 178-4 A-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B Configuration and Parameter Assignment Frame for the IM 178-4 B-1. . . . . . . . . .
B.1 Structure of the Configuration Frame B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B.2 Structure of the Parameter Assignment Frame B-2. . . . . . . . . . . . . . . . . . . . . .
B.2.1 Standard Section of the Parameter Assignment Frame B-2. . . . . . . . . . . . . . .
B.2.2 Parameters for the DP Attachment B-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B.2.3 Technological Parameters B-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glossary Glossary-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Index Index-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1
IM178-4
C79000-G7076-C178-01
Product Overview
Order Number
The product has the order number: 6ES7 178-4BH00-0AE0
Components of the product
1 Module
1 CD ROM with the following content:
Sthe readme.wri, liesmich.wri, lisezmoi.wri, leggimi.wri and leame.wri files
Sthe Englisch, German, French and Italian manual for the IM 178-4
(IM178_E.PDF, IM178_D.PDF, IM178-4_F.PDF, IM178-4_I.PDF)
SDevice database:
– German: SIEM8064.GSG
– English: SIEM8064.GSE
– French: SIEM8064.GSF
– Italian: SIEM8064.GSI
Sthe bitmap files IM178__N.BMP and IM178__S.BMP
SAcrobat Reader
1

Product Overview
1-2 IM178-4
C79000-G7076-C178-01
1.1 What Can the IM 178-4 Do?
What Can the IM 178-4 Do?
The IM 178-4 is a DP slave with a fixed number of I/Os and has the same design
as S7-300 modules. It has two technologically identical but independent channels
for position detection of incremental position encoders and/or SSI position
encoders and for controlling analog drives ("10 V). The module is attached to the
DP network via a 9 pin sub-D male connector.
Per channel, the module has the following:
SOne input for position detection with SSI position encoders or incremental
encoders with 5 V differential signals
SOne analog output "10 V
S3 digital inputs (2 with fixed functions)
S3 digital outputs that you can use as required.
1.2 Fields of Application of the IM 178-4
Where can you use the IM 178-4?
The IM 178-4 is required mainly by users who want to create distributed position
detection and positioning systems in conjunction with conventional drives with an
analog interface ("10 V) and conventional displacement measuring systems (SSI,
incremental position encoders with 5V differential signals). The technological
functionality is no longer in the individual positioning modules as previously but in a
powerful centralized controller.

Product Overview
1-3
IM178-4
C79000-G7076-C178-01
1.3 The Hardware of the IM 178-4
Module Overview
The following diagram shows the IM 178-4 module with its front connector.
Type Label
Front Connector
Diagnostic LEDs
Labeling Strip
Version
Order Number
Figure 1-1 The IM 178-4 Module
Front Connector
With the IM 178-4, the following attachments are possible via the front connector:
S2 inputs for position detection with SSI position encoders or incremental
position encoders with 5 V differential signals
S6 digital inputs
S6 digital outputs
S2 analog outputs "10 V
SPower supply 1L+
SLoad voltage 2L+
The front connector must be ordered separately (order number
6ES7 392-1AM00-0AA0

Product Overview
1-4 IM178-4
C79000-G7076-C178-01
Labeling Strip
The module has a labeling strip on the right front panel that you can label with your
signal names.
The inner side of the right front panel has the pinout of the IM 178-4.
Order Number and Version
The order number and version are shown at the bottom of the front panel.
Status and Diagnostics LEDs
Labeling Color Function
SF red Group error (technology)
BF red Bus error
ON green Operating display
0I0 green Digital input 0 of channel 0
0I1 green Digital input 1 of channel 0
0I2 green Digital input 2 of channel 0
0Q0 green Digital output 0 of channel 0
0Q1 green Digital output 1 of channel 0
0Q2 green Digital output 2 of channel 0
1I0 green Digital input 0 of channel 1
1I1 green Digital input 1 of channel 1
1I2 green Digital input 2 of channel 1
1Q0 green Digital output 0 of channel 1
1Q1 green Digital output 1 of channel 1
1Q2 green Digital output 2 of channel 1

2-1
IM178-4
C79000-G7076-C178-01
Installing and Removing the Module
Selecting the Location
A horizontal installation is preferable. If you install the module vertically, remember
that the ambient temperature is restricted (max. 40 _C).
Important Safety Rules
For modules in the S7-300 design, there are important rules that must be kept to.
These rules and regulations are explained in the manual S7-300 Programmable
Controller, Hardware and Installation, CPU Data .
Rules
When installing the IM 178-4, no particular measures are necessary regarding
electrostatic discharge (ESD).
Required Tools
To install or remove the IM 178-4, you require a 4.5 mm screwdriver.
Installation
To install the IM 178-4 on a rail, follow the steps outlined below. For further
information about installing modules, refer to the manual S7-300 Programmable
Controller, Hardware and Installation, CPU Data .
1. Hook the IM 178-4 on to the rail and push in the bottom section of the module.
2. Screw the IM 178-4 tight (torque approximately 0.8 to 1.1 Nm).
3. Plug in the front connector and screw it tight.
4. Fit the shield contact element.
The order number of the shield contact element is 6ES7 390-5AA00-0AA0.
5. Plug in the bus connector.
The order number of the bus connector is 6ES7 972-0BA10-0XA0 or
6ES7 972-0BB10-0XA0.
2

Installing and Removing the Module
2-2 IM178-4
C79000-G7076-C178-01
Removing/Replacing the Module
To remove the IM 178-4, follow the steps outlined below. For further information
about removing modules, refer to the manual S7-300 Programmable Controller,
Hardware and Installation, CPU Data
1. Turn off the auxiliary voltage and the load voltage at the front connector.
2. Open the front panel. If you require it, remove the label from inside the panel.
3. Release the mounting screw on the front connector and remove the connector.
4. Unplug the bus connector.
Note
If the LAN cable is connected through, you can remove the bus connector from the
DP interface without interrupting the data exchange on the bus.
5. Release the mounting screw on the module.
6. Pull out the bottom of the module from the rail and remove it upwards.
7. If required, install the new module.

3-1
IM178-4
C79000-G7076-C178-01
Wiring
3.1 Pinout of the Front Connector
Front connector
You connect the position encoders, the analog outputs, the digital inputs and
outputs, the sensor power supply and the module voltage via the 40-pin front
connector.
Figure 3-1 shows the front of the module, the front connector and the inner side of
the front panel with the pinout plan.
Front connectorFront view of the module Inside the front panel
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
1
1
1
1
1
1
1
1
1
2
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
2
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
3
3
3
4
3
Figure 3-1 Front Connector of the IM 178-4
3

Wiring
3-2 IM178-4
C79000-G7076-C178-01
Pinout of the Front Connector
Table 3-1 Pinout of the Front Connector
Pin Name Input/
Output LED Function
1 M OUT – Sensor power supply ground
25.2 V DC OUT – 5 V sensor power supply
324 V DC OUT – 24 V sensor power supply
4 0A/SDI IN – Channel 0 count signal A / serial data input
5 0A/SDI IN – Channel 0 count signal A / serial data input, inverted
6 0B IN – Channel 0 count signal B
7 0B IN – Channel 0 count signal B, inverted
8 0N IN – Channel 0 zero mark
9 0N IN – Channel 0 zero mark, inverted
10 0CLS OUT – Channel 0 shift clock CLS
11 0CLS OUT – Channel 0 shift clock CLS, inverted
12 1A/SDI IN – Channel 1 count signal A / serial data input
13 1A/SDI IN – Channel 1 count signal A / serial data input, inverted
14 1B IN – Channel 1 count signal B
15 1B IN – Channel 1 count signal B inverted
16 1N IN – Channel 1 zero mark
17 1N IN – Channel 1 zero mark, inverted
18 1CLS OUT – Channel 1 shift clock CLS
19 1CLS OUT – Channel 1 shift clock CLS, inverted
20 –
21 1L+ IN – Auxiliary voltage 1L+
22 M IN – Auxiliary voltage ground
23 0AO OUT – Analog output 0AO
24 0BS OUT – Reference signal 0BS
25 1AO OUT – Analog output 1AO
26 1BS OUT – Reference signal 1BS
27 0I0 IN green Digital input 0I0
28 0I1 IN green Digital input 0I1
29 0I2 IN green Digital input 0I2
30 0Q0 OUT green Digital output 0Q0
31 0Q1 OUT green Digital output 0Q1
32 0Q2 OUT green Digital output 0Q2
33 1I0 IN green Digital input 1I0

Wiring
3-3
IM178-4
C79000-G7076-C178-01
Table 3-1 Pinout of the Front Connector
Pin FunctionLEDInput/
Output
Name
34 1I1 IN green Digital input 1I1
35 1I2 IN green Digital input 1I2
36 1Q0 OUT green Digital output 1Q0
37 1Q1 OUT green Digital output 1Q1
38 1Q2 OUT green Digital output 1Q2
39 2L+ IN – Load voltage 2L+
40 2M IN – Load voltage ground
Note
If you supply the sensor with an external voltage, connect the ground of the
external voltage to the ground of the module (terminal 1 or 22).

Wiring
3-4 IM178-4
C79000-G7076-C178-01
3.2 Description of the Individual Pins (Notes, Explanations)
24 V Power Supply
For the power supplies of the IM 178-4, connect a DC voltage of 24 V to pins 1L+
and M and 2L+ and 2M.
!Caution
Make sure that the polarity of the 24 V power supply is correct otherwise the
module will be damaged.
The 24 V power supply must meet the following requirements:
Only an extra-low DC voltage of ≤60 V that is safely isolated from the main power
supply must be used as the 24 V power supply. Safe isolation of the power supply
can be achieved by adhering to the requirements of VDE 0100 Part 410 / HD
384-4-41 / IEC 364-4-41 (as functional extra-low voltage with safe isolation) or
VDE 0805 / EN 60950 / IEC 950 (as safety extra-low voltage SELV) or VDE 0106
Part 101.
5.2 V and 24 V Sensor Power Supplies
From the 24 V power supply 1L+/M, the module generates a voltage of 5.2 V. This
voltage is applied to DC5.2V (pin 2) as a short-circuit proof power supply for the
sensors and can accept a maximum load of 600 mA. The ground of the sensor
power supply is connected to M (Pin 1).
For sensors that require a power supply of 24 V, the short-circuit protected
auxiliary voltage is available at DC24V (Pin 3).
Note
A short-circuit of the 5.2 V sensor power supplies leads to a failure of the module.
Sensor Pins
Per channel, you can connect two different sensor types using shielded cables, as
follows:
SIncremental sensors complying with RS 422:
The signals A, A, B, B and N, N are connected via the correspondingly labeled
pins.
SSSI position encoders:
The signals SDI, SDI and CLS, CLS are connected to the correspondingly
labeled pins.

Wiring
3-5
IM178-4
C79000-G7076-C178-01
Digital Inputs I0 to I2
Per channel, the IM 178-4 has three digital inputs. These are operated with a rated
voltage of 24 V.
The digital inputs are electrically isolated from the DP interface and the sensor
signals.
The digital inputs I0 and I1 have fixed functions depending on the parameter
assignment (see Chapter 6). Pin I0 must be connected using a shielded cable.
Digital Outputs Q0 to Q2
Per channel, the IM 178-4 has three digital outputs. These are supplied from the
24 V power supply 2L+.
The digital outputs are electrically isolated from the DP interface and the sensor
signals.
The digital outputs are current–sourcing switches and can accept a load current of
0.5 A. They are protected against overload and short–circuits.
Note
The direct connection of relays and contactors is possible without external
protective circuits.
Analog Outputs
Per channel, the IM 178-4 has one analog output of ±10 V with a resolution of ±13
bits.
The analog outputs must be connected using shielded cables.
Note
Turning on the auxiliary voltage 1L+ can lead to the analog outputs supplying a
spurious pulse for several ms. This spurious pulse must not cause the power
circuits to be activated. This must be avoided by appropriate external wiring of the
module (digital output to enable the power circuits).

Wiring
3-6 IM178-4
C79000-G7076-C178-01
3.3 Wiring the Front Connector
Cables
When selecting suitable cables, follow the rules outlined below:
SThe cables for digital inputs 0I0 and 1I0 must be shielded.
SThe cables for the position encoder signals must be shielded; the pairs of cores
must be twisted.
SThe shields of the cables for the count signals must be connected to ground
both at the position encoder and in the immediate vicinity of the module, for
example using the shield contact element.
SUse flexible cables with cross–sections of 0.25 to 1.5 mm2.
SThe cables for the analog outputs must be shielded.
Note
If the sensor is supplied with power from the module, the conductor cross-section
must be large enough so that the required voltage is applied to the sensor despite
the voltage drop along the cable.
SA wire-end ferrule is not required. If you use wire-end ferrules, use only those
without an insulation collar according to DIN 46228 form A, short version!
Tools Required
A 3.5 mm screwdriver.