Siemens SIMATIC CP 340 User manual

SIMATIC
Communications processor
CP 340 first commissioning steps
Getting Started
04/2005
A5E00442606-01
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Safety Guidelines
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring to property damage only have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
Danger
indicates that death or severe personal injury will result if proper precautions are not taken.
Warning
indicates that death or severe personal injury may result if proper precautions are not taken.
Caution
with a safety alert symbol, indicates that minor personal injury can result if proper precautions are not taken.
Caution
without a safety alert symbol, indicates that property damage can result if proper precautions are not taken.
Notice
indicates that an unintended result or situation can occur if the corresponding information is not taken into
account.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will
be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to
property damage.
Qualified Personnel
The device/system may only be set up and used in conjunction with this documentation. Commissioning and
operation of a device/system may only be performed by qualified personnel. Within the context of the safety notes
in this documentation qualified persons are defined as persons who are authorized to commission, ground and
label devices, systems and circuits in accordance with established safety practices and standards.
Prescribed Usage
Note the following:
Warning
This device may only be used for the applications described in the catalog or the technical description and only in
connection with devices or components from other manufacturers which have been approved or recommended
by Siemens. Correct, reliable operation of the product requires proper transport, storage, positioning and
assembly as well as careful operation and maintenance.
Trademarks
All names identified by ® are registered trademarks of the Siemens AG. The remaining trademarks in this
publication may be trademarks whose use by third parties for their own purposes could violate the rights of the
owner.
Copyright Siemens AG 2005. All rights reserved.
The distribution and duplication of this document or the utilization and transmission of its
contents are not permitted without express written permission. Offenders will be liable for
damages. All rights, including rights created by patent grant or registration of a utility
model or design, are reserved.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the
hardware and software described. Since variance cannot be precluded entirely, we cannot
guarantee full consistency. However, the information in this publication is reviewed
regularly and any necessary corrections are included in subsequent editions.
Siemens AG
Automation and Drives
Postfach 4848, 90327 Nuremberg, Germany
© Siemens AG 2005
Technical data subject to change
Siemens Aktiengesellschaft A5E00442606-01
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CP 340 first commissioning steps
Getting Started, 04/2005, A5E00442606-01 1-1
First commissioning steps
Preface
These instructions use a concrete example to guide you through the four commissioning
steps and up to a functioning application with which you can transfer data via the serial
interface and get to know and check the basic functions of your CP 340 in hardware and
software. The references to the manual should give you an initial overview of the information
included within it.
The time required for the example amounts to between 1 and 2 hours, depending on your
experience.
Preconditions
The following preconditions have to be fulfilled:
• You have an S7 - 300 station consisting of a power supply module, a CPU and two
SM323 DI16/DO16 x 24V/0.5A (one for each input and output).
• STEP 7 (≥V5.0) is correctly installed on your programming device.
• You have set up a project for the S7-300 station.
• The programming device is connected to the CPU.
• You have a module CP 340, the associated configuration package and the necessary
connecting cable.
• You have prepared your connection partner for the serial data transfer. For the
commissioning of this example with the protocol 3964(R), your partner must be working
with higher priority.
Installing the configuration package on the programming device
The configuration package includes a configuration tool for the CP 340, a library with
function blocks as well as a program example.
1. Start the installation program on the CD by double clicking on the SETUP.EXE file.
2. Follow the instructions issued by the installation program.
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First commissioning steps
CP 340 first commissioning steps
1-2 Getting Started, 04/2005, A5E00442606-01
Install CP 340 and connect with the communication partner
1. Plug the connector supplied with the CP 340 into the bus connector of the CPU.
2. Mount the CP 340 on the rail, tilt it downwards and then screw it tight.
3. Use the connecting cable to create a connection between the CP 340 and your
connection partner. Refer to the manual for the assignment of the interface connector.
Test: Switch on the voltage on the power supply module.
After the initialization phase, the SF LED of the CP 340 illuminates.
Configure the CP 340
1. Open your project in the SIMATIC Manager.
2. In your project, call the HWCONFIG configuration table.
3. From the hardware catalog select the CP 340 with the correct MLFB and mount it in the
intended slot.
4. By double clicking on the CP 340 you open the "Properties CP 340" screen.
5. Under "Address" note the module address (in the example this is 288 --> 120 Hex). You
may need this value when integrating in your user program, where applicable.
6. Click on the Parameter button and select the protocol "3964(R)". Double click on the
Envelope.
7. Accept the configuration dialog box by clicking on the OK button with the default setting
9600 Bit/s, 8 data bits, 1 stop bit, parity even, priority low.
8. Save the configuration with File → Save and exit the configuration dialog box with File
→ Exit. In the "Properties CP 340" dialog box, click on the OK button.
9. Save the configuration you have created with Station → Save and Compile in your project.
10. Transfer the configuration in the STOP mode of the CPU with PLC → Download to
module.
11. The data are transferred directly to the CPU and the CP 340. The SF LED goes out to
indicate the successful completion of downloading.
12. Use Station → Exit to close HW Config.
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First commissioning steps
CP 340 first commissioning steps
Getting Started, 04/2005, A5E00442606-01 1-3
Integrating in the user program
1. When installing the configuration package you installed the example project
"zXX21_01_PtP_Com_CP34x" in the catalog Siemens\STEP7\Examples".
2. In the SIMATIC Manager open the example project with File → Open ... → Projects and
double click on the subproject "CP340 PtP Connection".
3. Open the S7 program of the CPU of this subproject. Double click on the "blocks"
container.
4. Apart from the system data, copy all the blocks into your project under
SIMATIC 300-Station → PU3xx → S7 Program → Blocks.
– FC10: is cyclically called up from the OB1
– FC11: FC with SEND
– FC12: FC with RECEIVE
– DB2, DB 3: Instance DBs for the standard FBs
– DB10: DB, from which is being sent
– DB20: DB, in which the received data is stored
– OB1: Cyclic OB
– OB100: Restart (warm start) OB
– FB2, FB3: Standard FBs for RECEIVE, SEND
5. By double clicking, open the OB100 in your project and verify in the first line of network 1
the module address "288".
6. Save the blocks with File → Save.
7. End the editing process of the FCs with File → Exit.
8. With the SIMATIC Manager select SIMATIC 300 Station → CPU3xx → S7 Program
→ Blocks.
9. With PLC → Download, load all the S7 blocks contained here into your CPU (CPU in
STOP state).
10. Switch the CPU to RUN.
Send
PEW 0: On your "Input SM323" switch the bits 0.1 (Enable FC11 and FC12), 0.6 (REQ for
P_SEND) and 1.1 (select the send request of 10 byte length) to "ON".
The CP340 then sends a message frame of 10 bytes in length via the serial interface (LED
"TxD" flashes). To repeat the send, you must initially switch the Bit 0.6 (REQ for P_SEND) to
"OFF" and then back to "ON" again.
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First commissioning steps
CP 340 first commissioning steps
1-4 Getting Started, 04/2005, A5E00442606-01
Receiving
If you are sending data from your communication partner, these are received by CP340 in
DB20 as the case may be. The destination specifications are created in the FC12 with the
label "AO:" or "A1:".
PEW0: to do this, on your "Input SM323" switch the bits 0.1 (Enable FC11 and FC12), 0.7
(EN_R for P_RCV) and 1.2 (select the destination offset "2" in the DB20) to "ON". Then the
CP340 will receive data via the serial interface (LED "RxD" flashes).
Assignment of the output location (PAW4)
Bit 0.0: "Done" of a successful SEND
Bit 0.1: "Error" of a damaged SEND
Bit 0.2: "BIE" of a SEND
Bit 0.4: "NDR" of a successful RECV
Bit 0.5: "Error" of a damaged RECV
Bit 0.6: "BIE" of a RECV
Diagnostics functions
Errors can occur in the case of incorrect operation, incorrect wiring of the serial interface or
inconsistent configuration.
The manual describes how to diagnose such errors and messages.
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