Siemens SIMATIC CM35 User Manual

SIMATIC Counter Module CM35
Manual Release 06/20 00
Foreword, Table of Contents
User’s Information
CM35
Counter Module
Manual
This manual describes the counter module with order no. 6AT1 735-0AA01-0AA0
Product Overview
Function Description
Operating Modes
Data Communication with the CM35
Pulse Counter Operating Mode
Period Duration Measurement Operating Mode
Timer Operating Mode
Positioning Operating Mode
1
2
3
4
5
6
7
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Appendices
Literature
EC Declaration of Conformity
Glossary
A
B
Release 06/2000
Notes on safety
!
!
!
This manual contains notes which you must adhere to for your own personal safety and to avoid property damage. These notes are highlighted with a warning triangle showing the degree of danger as shown below.
Danger
Means death, severe personal injury or significant property damage will occur when the appropriate precautionary measures are not taken.
Warning
Means death, severe personal injury or significant property damage may occur when the appropriate precautionary measures are not taken.
Caution
Means minor personal injury or property damage may occur when the appropriate precautio­nary measures are not taken.
Note
Highlights important information about the product, its handling or a particular portion of the documentation which requires special attention.
Qualified personnel
Use as intended
!
Brands
Passing on tothird parties, reproduction, utilization and revelation of this document is not permitted without express permission.Violators will be liable for damages.All rights are reserved, in particular rights created by a patent grant or registration of a utility model or design.
Siemens AG Automation and Drives Motion Control Systems Frauenauracher Strasse 80 D-91056 Erlangen
Siemens Aktiengesellschaft
Only qualified personnel may commission and operate the device. For the purpose of the safety notes in this manual, qualified personnel are those persons who are authorized to com­mission, ground and tag devices, systems and electrical circuits in accordance with safety standards.
Adhere to the following.
Warning
The device may only be used for the individual applications included in the catalog and technical description. When used with devices and components of other manufacturers, these devices and components must be approved or recommended by Siemens.
Correct and safe operation of the product is dependent on proper transportation, storage, setup and installation and careful operator control and maintenance.
SIMATICR is a registered brand of SIEMENS AG.
The other designations in this publication may be brands whose use by third parties may violate the rights of the owners.
Disclaimer of liabilityCopyright E Siemens AG 1997--2000, All rights reserved
Although we have checked the contents of this manual for agree­ment with the hardware and software described, full agreement can­not be guaranteed. The information in this manual is checked at regular intervals and necessary corrections included in the next release.Your ideas and suggestions are welcome.
E Siemens AG 1997--2000 Subject to change without prior notice

Foreword

Purpose of this manual
Contents of this manual
Target readers
Area of validity of this manual
Hardware and soft­ware prerequisites for this manual
This manual describes all steps required for the effective use of the CM35 counter module. It presents the functionality of the CM35 concisely and log­ically while you are familiarizing yourself with the module.
This manual describes the hardware and software of the CM35. It provides an introduction and can also be used as a reference work.
This manual has been written for the following circles of readers.
S Maintenance personnel
S Programmers
S Commissioning personnel
S Service personnel
This manual describes the functions of the CM35 counter module as t hey were at the time this manual was published. We reserve the right to modify the functionality of the CM35. These c hanges will be described in product information sheets.
This manual describes:
S The CM35 counter module (order no. 6AT1 735-0AA01-0AA0)
S The configuration package (order no. 6AT1 735-0DA01-0YA0)
If you are using the previous version of the CM35 counter module (order no. 6AT1 735-0AA00-0AA0), please use the configuration package with the or­der number 6AT1 735-0DA00-0YA0.
Caution:
The CM35 counter module (order no. 6AT1 735-0AA01-0AA0) is not com- patible with the CM35 counter module (order no. 6AT1 735-0AA00-0AA0).
Additional source of information
CM35 Counter Module (4) J31069-D0416-U001-A5-7618
The appendix lists additional sources of information on the subject of SIMATIC S7--300.
i
For
eword
Aids to finding information in this manual
Standards
This manual offers the following aids to help you find the special information you want.
S A comprehensive table of contents is located at the beginning of the
manual.
S All chapters provide a left--hand column with an overview of the contents
of the particular section.
S At the end of the manual, you will find a glossary defining important
terms as they are used in the manual.
The SIMATIC S7--300 programmable controller meets the requirements of standard IEC 1131.
Contact your Siemens representative at your nearest Siemens office or the SIMATIC hotline (telephone no. 0911/895-7000 or fax no. 0911/895-7002) for questions on the products described in this manual for which you are un­able to find answers.
For questions or comments on the manual itself, please fill out the response sheet at the end of the manual, and return it to the address indicated. We would also appreciate your including your personal opinion of the manual on the response sheet.
We offer courses to make it easier to get started with the SIMATIC automa­tion system. Please contact your regional training center or the central train­ing center in Nuremberg (tel. no. 0911/895-3154).
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CM35 Counter Module

Table of Contents

1 Product Overview 1-1.......................................................
1.1 Overview 1-2.......................................................
1.2 Use on Programmable Controllers and Automation
Systems 1-3.......................................................
1.3 Hardware 1-6......................................................
1.4 Software 1-8.......................................................
1.5 Technical Data 1-9..................................................
2 Function Description 2-1....................................................
2.1 Function Overview 2-2...............................................
2.2 Pulse Counter 2-3..................................................
2.3 Period Duration Measurement 2-3.....................................
2.4 Timer 2-3..........................................................
2.5 Positioning 2-3.....................................................
3 Commissioning 3-1.........................................................
3.1 Installation of the CM35 3-3..........................................
3.1.1 Mounting the CM35 3-3..............................................
3.1.2 Mounting and Demounting the CM35 3-6...............................
3.2 Wiring the CM35 3-8................................................
3.2.1 Connection Allocation of the 25--Pin Sub D Socket 3-10...................
3.2.2 Connection Allocation of the 15--Pin Sub D Socket 3-12...................
3.3 Configuration and Parameterization 3-13................................
3.3.1 Installation of the Object Manager for STEP 7 3-14.......................
3.3.2 Central Integration into the SIMATIC S7-300 3-15........................
3.3.3 Distributed Integration into the SIMATIC S7 3-16.........................
3.3.4 Distributed Integration into the SIMATIC S5 3-17.........................
3.3.4.1 Hardware Prerequisites 3-17..........................................
3.3.4.2 Configuration 3-18...................................................
3.4 Reactions during Startup and in Case of Errors 3-23......................
4 Data Communication with the CM35 4-1......................................
4.1 Overview 4-2.......................................................
4.2 Parameterization 4-3................................................
4.2.1 Parameterization with SFC 55 (Only SIMATIC S7) 4-6...................
4.2.2 Parameterization via Direct I/O Accesses (Only SIMATIC S5) 4-8..........
4.3 Programming 4-11...................................................
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4.3.1 Controlling the Channels 4-11.........................................
4.3.2 Controlling the Digital Outputs 4-13.....................................
4.3.3 I/O Write Accesses 4-14..............................................
4.3.4 Reading the Data 4-15................................................
4.3.5 Evaluating a Hardware Interrupt in OB 40 4-17...........................
4.4 Overview of the Allocation of the Address Area and
Sequence of the Evaluation 4-19.......................................
5 Pulse Counter Operating Mode 5-1..........................................
5.1 Function Description 5-2.............................................
5.2 Parameterization 5-4................................................
5.2.1 Description of the Parameterization Data 5-4...........................
5.2.2 Structure of the Parameter Blocks 5-11.................................
5.3 Starting and Stopping the Counting Channels 5-14.......................
5.4 Controlling the Digital Outputs 5-15.....................................
5.5 Hardware Interrupt Evaluation 5-17.....................................
5.6 Reading the Counting Values 5-18.....................................
6 Period Duration Measurement Operating Mode 6-1............................
6.1 Function Description 6-2.............................................
6.2 Parameterization 6-4................................................
6.2.1 Description of the Parameter Data 6-5.................................
6.2.2 Structure of the Parameter Block 6-6..................................
6.3 Starting and Stopping the Measuring Channels 6-7......................
6.4 Controlling the Digital Outputs 6-8.....................................
6.5 Hardware Interrupt Evaluation 6-9.....................................
6.6 Reading the Measured Values 6-10.....................................
7 Timer Operating Mode 7-1..................................................
7.1 Function Description 7-2.............................................
7.2 Parameterization 7-3................................................
7.2.1 Description of the Parameter Data 7-4.................................
7.2.2 Structure of the Parameter Blocks 7-6.................................
7.3 Starting and Stopping the Timers 7-9..................................
7.4 Controlling the Digital Outputs 7-10.....................................
7.5 Hardware Interrupt Evaluation 7-12.....................................
7.6 Reading the Status 7-14..............................................
8 Positioning Operating mode 8-1.............................................
8.1 Function Description 8-2.............................................
8.2 Parameterization 8-7................................................
8.2.1 Description of the Parameter Data 8-8.................................
8.2.2 Structure of the Parameter Blocks 8-10.................................
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8.3 Starting and Stopping the Axes 8-14....................................
8.4 Controlling the Digital Outputs 8-16.....................................
8.5 Hardware Interrupt Evaluation 8-18.....................................
8.6 Reading the Actual Positions 8-19......................................
A Literature A-1..............................................................
B EC Declaration of Conformity B-1............................................
Glossary Glossary-1..........................................................
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Product Overview

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1.1 Overview

Function scope
Digital inputs and outputs
Application areas
The CM35 is a multi--channel counter module which can be used to imple­ment various tasks in the following operating modes.
S Pulse counter
S Period duration measurement
With 8 channels
S Timer
S Positioning With 4 axes
The selected operating mode applies to all channels of the CM35. The func­tion parameters can be set separately for each channel.
The counter module has eight floating digital inputs and outputs which are used for the inputs and outputs of the counting channels. The signals are led out via two sub D sockets on the front.
When not used for the operating mode, the outputs can be used as desired by the user program as process I/O.
The m odule can be used for position encoding and positioning as well as in the following systems.
-- Proportioning systems
-- Filling systems
Use with program­mable controllers and automation systems
-- Packaging systems
-- Sorting systems
-- Systems with defined time intervals
The counter module can be used centrally on the SIMATIC S7--300 and as distributed I/O on the modular ET 200M I/O device on the SIMATIC S7 and SIMATIC S5. The conventional configuration procedures of STEP 7 or COM PROFIBUS (for SIMATIC S5) are used for the configuration.
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1.2 Use on Programmable Controllers and Automation Systems

Central integration into the SIMATIC S7-300
Distributed in­tegration into the SIMATIC S7
The full function scope of the module can be utilized. System function SFC 55 is available for the parameterization. See reference manual /235/.
Possible
Modules
Example: CPU 312 IFM CPU 313 CPU 314
:
CPU 614
Sample Configuration
PS
CPU
CM35
The full function scope of the module can be utilized. Parameterization is performed with system function SFC 55.
Possible
Modules
Master:
-- S7-CPU with DP interface
-- CP 443-5 Ext.
-- IM 467
Sample Configuration
S7-300
CPU 315-2 DP
CM35 Counter Module (4) J31069-D0416-U001-A5-7618
Slave:
-- IM 153-1
-- IM 153-2
PS
PROFIBUS-DP
ET 200M
PS CM35IM 153-1
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Distributed in­tegration into the SIMATIC S5
Since no hardware interrupts are triggered on the SIMATIC S5 by PROFIBUS--DP, the function scope is limited. Only the operating modes ²period duration measurement² and ²timer² can be used.
Parameterization is performed via I/O direct accesses.
Possible
Modules
Master:
-- P L C S5-95U(-MA)
-- PLC S5-115U
-- PLC S5-135U
-- PLC S5-155U
via IM 308-C
Slave:
-- IM 153-1
-- IM 153-2
Sample Configuration
IM 308-C
S5-115U
PROFIBUS-DP
ET 200M
IM 153-1
PS CM35IM 153-1
Prerequisites for the coupling are an IM 153--1 (MLFB no. 6ES7 153--1AA02--0XB0 or later) and CM35 modules (MLFB no. 6AT1 735--0AA01--0AA0, release status 4 or later).
Up to 7 CM35 modules can be connected with each IM 153--1 interface.
Exception: Maximum of one CM35 per IM 153--1 when distributed
connection to a SIMATIC S5--95U/master DP is used
Maximum of 8 CM35s per IM 153--1 when distributed connectiontoaSIMATICS7(CPU318--2DP, CPU 417--4 DP, CP 443--5 Ext., IM 467) is used
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IM 153-2
SIMATIC S7-400H and active back­plane bus, SIMATIC PCS 7
Prerequisites for the coupling are an IM 153--2 (MLFB no. 6ES7 153--2AA01--0XB0, release status 2 or later) and CM35 modules (MLFB no. 6AT1 735--0AA01--0AA0).
CM35 modules (MLFB no. 6AT1 735--0AA01--0AA0, release status 4 or later) are required for the IM 153--2 interfaces (MLFB no. 6ES7 153--2AA02--0XB0, release status 5 or later).
Up to 7 CM35 modules can be connected to each IM 153--2 interface.
Exception: Maximum of one CM35 per IM 153--2 when distributed
connection to a SIMATIC S5--95U/master DP is used
Maximum of 8 CM35s per IM 153--2 when distributed connectiontoaSIMATICS7(CPU318--2DP, CPU 417--4 DP, CP 443--5 Ext., IM 467) is used.
The present version of the CM35 does not support:
S The setup with active bus modules for ET 200M
S Use on high--availability programmable controllers with redundant setup
(SIMATIC S7-400H)
S Use with SIMATIC PCS 7
For additional information, contact the SIMATIC hotline.
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1.3 Hardware

View of the module with front door closed
SF
CM35
Counter Module
x2
34
xxxxxxx
Module name
SF LED
Front door
Release status
Order number
(6AT1 735-0AA01-0AA0)
View of the module with front door open
Figure 1-1 View of the front with front door closed
SF
Digital inputs
25-- pin sub D socket
Digital outputs
15-- pin sub D socket
Figure 1-2 View of the front with front door open
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Front plug connector
SF LED
The CM35 is equipped with the following front plug connectors for connec­tion of the process I/O.
S 25--pin sub D socket for connection of the input signals (digital inputs)
The inputs are individually isolated from one another and can be used with a 5 V or 24 V signal level.
S 15--pin sub D socket with digit al outputs and the connection for the exter-
nal supply voltage for the digital outputs
The outputs are isolated against the module logic, but are not isolated among one another. They are powered with a supply voltage of 24 V DC.
The red SF LED on the front indicates that the module is not ready for opera­tion. This LED goes off when a valid parameterization was transferred to the module after a warm restart or hot restart and the BASP/OD signal is no lon­ger active.
The CM35 does not support diagnostic alarms and the STEP 7 diagnostic information.
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1.4 Software

Module firmware
The firmware of the module offers four different operating modes.
S Pulse counter
Continuous counting with maximum counting frequencies of 10 kHz
S Period duration measurement
Measurement of period durations between 1 msec and 2.6 sec with a reso­lution of 1% on all 8 channels (reference frequencies: 100 kHz, 50 kHz, 25 kHz)
S Timer
8 separate switch--on times from 10 msec to 278 min
S Positioning
31
4 axes with a max. of 2 2kHz
The desired operating mode is selected via the configuration user interface.
Note
The following applies when the CM35 is used to acquire frequencies.
increments up to a top frequency of
S For lower frequencies: ²period duration measurement² operating mode is
recommended (the pe r iod duration can be converted to a frequency).
S For higher frequencies: ²pulse counting² operating mode is recom-
mended.
Software
Depending on use on the SIMATIC S7 or decentralized on the SIMATIC S5, configuration of the module is performed with the ²SIMATIC Manager² or with ²COM PROFIBUS.²
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CM35 Counter Module

1.5 Technical Data

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Digital inputs
Type Pulse counter
Number 8
System Incremental
Limit frequency Max. of 10 kHz
Minimum pulse duration (for high and low)
Signal level S 24 Volt signals:
40 msec
-- Signal
-- Signal
²H²:15to30Volt ²L²:-3to+5Volt
S 5 Volt signals:
-- Signal
-- Signal
Input current S For 24 V and ²H² signal
-- Typical 4.7 mA
²H²:2.4to6Volt ²L²: --0.6 to 0.8 Volt
S For 5 V and ²H² signal
-- Typical 10 mA
Potential isolation Yes
Maximum signal rise time From ²L² to ²H²: typ. 10 msec
From
²H² to ²L²: typ. 15 msec
Permissible cable length (shielded) For 24 V 25 m
For 5 V 5 m
Connection 25--pin sub D socket
Digital outputs
Number 8
Signal level 24 Volt, P--switching
Output current (short--circuit proof) Per DO: Max. of 0.5 A
Total current: Max. of 4 A
Switching frequency Max. of 10 Hz with ohmic load
8 Hz with lamp load
Max. of 0.5 Hz with inductive load
Cable length Max. of 100 m
Connection 15--pin sub D socket
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Other
MLFB no.
Input voltage +5 V via P bus
Current consumption Typ. 0.150 A
UL/CSA/FM No
CM 35 counter module: 6AT1 735-0AA01-0AA0 or later
Configuration package: 6AT1 735-0DA01-0YA0 or later
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Function Description

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2.1 Function Overview

Table 2-1 Operating modes
Operating
Function Limit
Mode
Pulse counter
Counting up from 0 to 65535 with comparison function
Counting down from 65535 to 0 with comparison function
Period dura­tion mea­surement
Measuring the time between 2 falling edges of the applied signal
Timer Outputting the speci-
fied switching times via the digital outputs
Positioning Acquiring the actual
position of axes via incremental encoder (track A/B) and comparing it with the setpoint
Fre-
quency
Control the
Digital
Outputs Via ...
Hardware
Interrupt
for ...
Use
on
S5 Master
or
Standard
Master
10 kHz Operating mode/
CPU control
Comparison value
Not possible
is reached.
1kHz CPU control - Possible
- Operating mode/ CPU control
Expiration of the
Possible
switch--on time
2kHz Operating mode/
CPU control
Setpoint is reached.
Not possible
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CM35 Counter Module

2.2 Pulse Counter

F
In this operating mode, the CM35 continuously counts up or down between 0 and 65535 when the counter is enabled.
-- When the counting value reaches the upper counting limit while counting up and another pulse arrives, the counting value jumps to the lower counting limit and counts from there without losing a pulse.
-- When the counting value reaches the lower counting limit while counting down and another pulse arrives, the counting value j umps to the upper counting limit and counts from there without losing a pulse.

2.3 Period Duration Measurement

In this operating mode, the CM35 acquires low frequencies with the aid of period duration measurement.
The CM35 measures the e xact time between two falling edges of the count­ing signal by counting the pulses of an internal, precision--quartz reference frequency.
unction Description

2.4 Timer

In timer operating mode, precisely defined switch-- on times of 10 millisec­onds to 278 minutes can be implemented for every digital output.

2.5 Positioning

In this operating mode, the CM35 supports controlled positioning with a switch--off point.
Position acquisition is performed with an incremental encoder whose pulses are acquired by the module with the correct sign in the traversing area from –2,147,483,648 to +2,147,483,647.
Two digital outputs are available for each of the four channels. These out­puts are addressed by the CM35 based on the direction.
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unction Description
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CM35 Counter Module

Commissioning

This chapter provides all the information you will need for commissioning, including mounting, connection, configuration and parameterizati on.
3
General safety notes
!
!
Adherence to these safety notes is mandatory. Non--adherence will void the warranty!
Warning
Unqualified manipulations on the device/system or non--adherence to the warnings on the cabinet of the device/system can cause severe personal in­jury or property damage. Only qualified personnel may perform work on this device/system.
Note
This device has been developed, manufac tured, tested and documented in accordance with pertinent safety standards. Under normal conditions, the device does not endanger property or human health.
Caution
Commissioning is prohibited until it has been determined that the machine in which these components are to be installed meets the regulations of guide­line 89/392/EWG.
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Note
The following rules must be adhered to ensure that EU guidelines 89/336/EWG have been met.
S The setup guidelines and safety notes in the manuals and supplementary
documentation must be adhered to for both the programmable controller and the CM35.
S To achieve maximum EMC immunity, all signal lines to the CM35 must
be shielded and applied to a grounded shield retainer rail.
S On the CM35, the cable shield m ay not be applied to the sub D plug con-
nector.
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3.1 Installation of the CM35

s
s

3.1.1 Mounting the CM35

Commi
ioning
Preparation
Slot
Before physical installation is begun, the appropriate safety precautions must be taken and the following points complied with or clarified.
S Was the module still in its original packaging?
S Check the delivery for transportation damages.
S Check the delivery for completeness.
If you discover damages or deficiencies, please contact your SIEMENS representative.
The S7 interface of the CM35 corresponds to the serial I/O bus (P bus) of the SIMATIC S7-300.
All slots on the SIMATIC S7 which can be assigned to signal modules (SM) are available to the CM35.
For additional information, see the manual of the SIMATIC S7--300.
The maximum numbe r of CM35 modules which can be installed on SIMA­TIC programmable cont rollers depends on the following fac tors.
S Maximum number of modules in the central rack/expansion unit or the
modular ET 200M I/O device
S Memory requirements of the S5/S7/C7 CPU
S Maximum permissible current consumption (5 V) from the S7 backplane
bus
Physical setup
Installation position
CM35 Counter Module (4) J31069-D0416-U001-A5-7618
For information on possible physical setups and how to configure, see manual /70/.
Horizontal installation is recommended. When vertical installation is used, remember that environmental temperatures are restricted (max. of 40° C).
3-3
100
0mA
A
ET200Mwit
h
p
DPmaste
r
Commi
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s
Table 3-1 Technical data of the SIMATIC
Type of Setup Central Setup Distributed Setup
CPU Work memory of the
CPU 312 IFM 6 8MOD No multi--row setup possible 7 MOD per ET 200M
CPU 313 12 800 m
CPU 314 24 8MOD 8+8MOD 1 · 8MOD
ioning
CPU in Kbytes (status 6/2000)
Number of Modules Which Can Be Installed on the Central Rack/Ex­pansion Unit Current (5 V) from the S7 Backplane Bus
1-row 2-row Max. of
4-row
Central rack IM 365 1 · IM 360
3 · IM 361
ET 200M
CPU 314 IFM 32
CPU 315 48
CPU 315-2 DP 64
CPU 316 128
CPU 318-2 DP 512,
of these max. of
256 for code
256 for data
CPU 31X-2 DP
CPU 41X-X DP
C7-6XX DP
S5-1X5U with
IM 308-C
MOD = CM35 modules
Depends on the CPU being used
1200 mA To tal of
1100 mA
- - -
1 · 850 mA
plus
3 · 8MOD
3 · 800 mA
Exception:
With CPU 314 IFM: Total of up t o 31 modules
Exceptions: Max. of 8 MOD per
:
- CPU 318-2 DP
- CPU 417-4 DP
- CP 443-5 Ext.
- IM 467 Max. of 1 MOD per ET 200M with: SIMATIC S5-95U/ DP master
The number of slave stations (ET 200M) per CPU depends on the CPU being used.
Example: CPU 315-2 DP: Max. of 32 slave stations (ET 200M) per CPU
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CM35 Counter Module
Commi
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Table 3-2 Requirements on the CM35 side
ioning
With Use of Current requirements (5 V) from
S7 Backplane Bus
m · CM35 m · 150 mA
m = Number of CM35 modules
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3.1.2 Mounting and Demounting the CM35

Rules
Required tools
No special protective measures (ESD guidelines) are required for installation of the CM35.
You will need a 4.5 mm screwdriver to mount and de mount the CM35.
Note
Make absolutely sure that cable installation meets EMC regulations (also inside the cabinets).
Avoid installing cables next to power cables, and shield the cables in the manner described above.
Two--sided shield application is usually recommended. When interference is primarily low--frequency, one--sided shield application can be more advanta­geous.
Adhere to the grounding concept of the SIMATIC S7--300 to avoid problems with potential.
The setup guidelines (AR) of the SIMATIC S7 (see manual on setting up S7--300 programmable controllers and CPU data) must be adhered to during all mounting steps, and the following instructions must be performed in the order specified.
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How to install
How to remove/ replace modules
For how to mount the modules on the system, see manual /70/ or /140/. A simplified version of installation is given here.
1. Turn off all voltages on the SIMATIC S7, secure against switch--on, and label.
2. Make protective conductor connection, or check it. See AR.
3. Mount shield connecting element (SAE).
-- The shield connecting element must be mounted directly under the
slot of the CM35 on the mounting rail.
-- Each cable to be connected to the CM35 requires a shield clamp on
the shield rail of the SAE.
4. Plug in bus connector. See AR.
-- A bus connector is supplied with each CM35. Insert the bus connector
on the module occupying the slot to the left of the CM35.
5. Hang in CM35. See AR.
6. Secure CM35 with screw. See AR.
7. Label CM35. See AR.
For how to set up/replace modules in the system, see manual /70/ or /140/. A simplified version of removal is given here.
1. Switch the CPU to STOP.
2. Turn off the power supply.
3. Release the front plug connector, and disconnect it.
4. Release the mounting screw on the module.
5. Swivel the module out of the mounting rail, and re move it.
6. If necessary, install the new module.
For more information on removing the modules, see manuals /70/ and /140/.
CM35 Counter Module (4) J31069-D0416-U001-A5-7618
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