This manual describes
the counter module with
order no. 6AT1 735-0AA01-0AA0
Product Overview
Function Description
Commissioning
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
8
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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).
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 PositioningWith 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.
1-2
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CM35 Counter Module
r
oduct Overview
P
1.2Use 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
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Slave:
-- IM 153-1
-- IM 153-2
PS
PROFIBUS-DP
ET 200M
PSCM35IM 153-1
1-3
r
oduct Overview
P
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
PSCM35IM 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
1-4
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CM35 Counter Module
r
oduct Overview
P
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.
CM35 Counter Module
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1-5
r
oduct Overview
P
1.3Hardware
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 1-1View of the front with front door closed
SF
Digital inputs
25-- pin sub D socket
Digital outputs
15-- pin sub D socket
Figure 1-2View of the front with front door open
1-6
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CM35 Counter Module
r
oduct Overview
P
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.
CM35 Counter Module
(4) J31069-D0416-U001-A5-7618
1-7
r
oduct Overview
P
1.4Software
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
1-8
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CM35 Counter Module
1.5Technical Data
r
P
oduct Overview
Digital inputs
TypePulse counter
Number8
SystemIncremental
Limit frequencyMax. of 10 kHz
Minimum pulse duration
(for high and low)
Signal levelS 24 Volt signals:
40 msec
--Signal
--Signal
²H²:15to30Volt
²L²:-3to+5Volt
S 5 Volt signals:
--Signal
--Signal
Input currentS For 24 V and ²H² signal
--Typical4.7 mA
²H²:2.4to6Volt
²L²: --0.6 to 0.8 Volt
S For 5 V and ²H² signal
--Typical10 mA
Potential isolationYes
Maximum signal rise timeFrom ²L² to ²H²: typ. 10 msec
From
²H² to ²L²: typ. 15 msec
Permissible cable length (shielded)For 24 V25 m
For 5 V5 m
Connection25--pin sub D socket
Digital outputs
Number8
Signal level24 Volt, P--switching
Output current (short--circuit proof)Per DO:Max. of 0.5 A
Total current:Max. of 4 A
Switching frequencyMax. of 10 Hz with ohmic load
8 Hz with lamp load
Max. of 0.5 Hz with inductive load
Cable lengthMax. of 100 m
Connection15--pin sub D socket
CM35 Counter Module
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1-9
r
oduct Overview
P
Other
MLFB no.
Input voltage+5 V via P bus
Current consumptionTyp. 0.150 A
UL/CSA/FMNo
CM 35 counter module:6AT1 735-0AA01-0AA0 or later
Configuration package:6AT1 735-0DA01-0YA0 or later
1-10
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CM35 Counter Module
Function Description
2
CM35 Counter Module
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2-1
F
unction Description
2.1Function Overview
Table 2-1Operating modes
Operating
FunctionLimit
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
TimerOutputting the speci-
fied switching times
via the digital outputs
PositioningAcquiring 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 kHzOperating mode/
CPU control
Comparison
value
Not possible
is reached.
1kHzCPU control-Possible
-Operating mode/
CPU control
Expiration of
the
Possible
switch--on
time
2kHzOperating mode/
CPU control
Setpoint is
reached.
Not possible
2-2
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CM35 Counter Module
2.2Pulse 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.
2.3Period 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
2.4Timer
In timer operating mode, precisely defined switch-- on times of 10 milliseconds to 278 minutes can be implemented for every digital output.
2.5Positioning
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.
CM35 Counter Module
(4) J31069-D0416-U001-A5-7618
2-3
F
unctionDescription
2-4
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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.
CM35 Counter Module
(4) J31069-D0416-U001-A5-7618
3-1
Commi
s
s
ioning
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.
3-2
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CM35 Counter Module
3.1Installation of the CM35
s
s
3.1.1Mounting 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
s
s
Table 3-1Technical data of the SIMATIC
Type of SetupCentral SetupDistributed Setup
CPUWork memory of the
CPU 312 IFM68MODNo multi--row setup possible7 MOD per ET 200M
CPU 31312800 m
CPU 314248MOD8+8MOD1 · 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-row2-rowMax. of
4-row
Central rack IM 3651 · IM 360
3 · IM 361
ET 200M
CPU 314 IFM32
CPU 31548
CPU 315-2 DP64
CPU 316128
CPU 318-2 DP512,
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 mATo 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
3-4
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CM35 Counter Module
Commi
s
s
Table 3-2Requirements on the CM35 side
ioning
With Use ofCurrent requirements (5 V) from
S7 Backplane Bus
m · CM35m · 150 mA
m = Number of CM35 modules
CM35 Counter Module
(4) J31069-D0416-U001-A5-7618
3-5
Commi
s
s
ioning
3.1.2Mounting 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.
3-6
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CM35 Counter Module
Commi
s
s
ioning
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
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3-7
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