Siemens Simatic S7-300 Technical Data Manual

Text of Siemens Simatic S7-300 User Guide:

• Siemens Simatic S7-300, Cycle and reaction times 5.2 Cycle time CPU 31xC and CPU 31x, Technical data Manual, Edition 08/2004, A5E00105475-05 5-3 Sequence of cyclic program processing The table and figure below show the phases in cyclic program processing. Table 5-1 Cyclic program processing Step Sequence 1 The operating system initiates cycle time monitoring. 2 The CPU copies the values of the process image of outputs to the output modules. 3 The CPU reads the status at the inputs of the input modules and then updates the process image of inputs. 4 The CPU processes the user program in time shares and executes program instructions. 5 At the end of a

• Siemens Simatic S7-300, Technical data of CPU 31x 7.3 CPU 314 CPU 31xC and CPU 31x, Technical data 7-12 Manual, Edition 08/2004, A5E00105475-05 Technical data MPI Services • PG/OP communication Yes • Routing No • Global data communication Yes • S7 basic communication Yes • S7 communication – As server – As client Yes Yes No (but via CP and loadable FBs) • Transmission rates 187.5 kbps Programming Programming language LAD/FBD/STL Available instructions See the Instruction List

• Siemens Simatic S7-300, Technical data of CPU 31xC 6.6 Technical data of the integrated I/O CPU 31xC and CPU 31x, Technical data 6-52 Manual, Edition 08/2004, A5E00105475-05 Technical data Time constant of the input filter 0,38 ms Basic processing time 1 ms Interference suppression, error limits Interference voltage suppression for f = nx (f1 ± 1 %), (f1 = interference frequency), n = 1, 2 • Commonmode interference (U CM < 1.0 V) > 40 dB • Feedback interference (peak value of the interference < rated value of the input range) > 30 dB Cros

• Siemens Simatic S7-300, Memory concept 4.2 Memory functions CPU 31xC and CPU 31x, Technical data Manual, Edition 08/2004, A5E00105475-05 4-13 4.2.3.3 Deleting blocks Deleting blocks When you delete a block, it is deleted from load memory. In STEP 7, you can also delete blocks with the user program (DBs also with SFC 23 "DEL_DB"). RAM used by this block is released. 4.2.3.4 Compressing blocks Compressing blocks When data are compressed, gaps which have developed between memory objects in load memory/RAM as a result of load/delete operations will be eliminated. This r

• Siemens Simatic S7-300, Index CPU 31xC and CPU 31x, Technical data Manual, Edition 08/2004, A5E00105475-05 Index-3 P Power supply Connector, 2-3, 2-6, 2-8, 2-10 Process interrupt processing, 5-23 PROFIBUS, 3-16, Glossary-15 PROFIBUS International, 3-17 PROFINET Implementation, 3-17 PROFINET, 3-4, 3-16 interface, 3-3 Objectives, 3-17 PROFINET CBA, 3-17 PROFINET IO, 3-17 PROFINET IO, 3-18 PtP interface, 3-3, 3-5 R RAM, 4-2 RAM to ROM, 4-13 Required basic knowledge, iii Response time Calculating the longest, 5-18 Calculating the shortest, 5-16 Conditions for the longest, 5-17 Conditions for the shortest, 5-1

• Siemens Simatic S7-300, Technical data of CPU 31x 7.7 CPU 317-2 PN/DP CPU 31xC and CPU 31x, Technical data Manual, Edition 08/2004, A5E00105475-05 7-37 Technical data Routing • Interface X1 configured as – MPI – DP master – DP slave (active) • Interface X2 configured as – PROFINET Yes Max. 10 Max. 24 Max. 14 Max. 24 CBA (at 50 % communication load) • Maximum data length for arrays and structures between two partners – Acyclic PROFINET interconnections – Cyclic PROFINET interconnections – Local interconnections 1400 bytes 450 bytes Slave-dependent •

• Siemens Simatic S7-300, Glossary CPU 31xC and CPU 31x, Technical data Glossary-18 Manual, Edition 08/2004, A5E00105475-05 Restart On CPU start-up (e.g. after is switched from STOP to RUN mode via selector switch or with POWER ON), OB100 (restart) is initially executed, prior to cyclic program execution (OB1). On restart, the input process image is read in and the STEP 7 user program is executed, starting at the first instruction in OB1. Retentive memory A memory area is considered retentive if its contents are retained even after a power loss and transitions from STOP to RUN. The non-

• Siemens Simatic S7-300, Technical data of CPU 31xC 6.5 CPU 314C-2 PtP and CPU 314C-2 DP CPU 31xC and CPU 31x, Technical data Manual, Edition 08/2004, A5E00105475-05 6-21 6.5 CPU 314C-2 PtP and CPU 314C-2 DP Technical data Table 6-6 Technical data of CPU 314C-2 PtP and CPU 314C-2 DP Technical data CPU 314C-2 PtP CPU 314C-2 DP CPU and version CPU 314C-2 PtP CPU 314C-2 DP Order number 6ES7 314-6BF01-0AB0 6ES7 314-6CF01-0AB0 • Hardware version 01 01 • Firmware version V2.0.0 V2.0.0 Associated programming package STEP 7 as of V 5.2 + SP 1 (please use previous CPU for STEP 7 V 5.1 + SP 3 or later) S

• Siemens Simatic S7-300, Technical data of CPU 31xC 6.3 CPU 313C CPU 31xC and CPU 31x, Technical data Manual, Edition 08/2004, A5E00105475-05 6-11 Technical data Process diagnostics messages Yes • Simultaneously enabled interrupt S blocks Max. 20 Testing and commissioning functions Status/control variables Yes • Variables Inputs, outputs, memory bits, DBs, timers, counters • Number of variables – of those as status variable – of those as control variable Max. 30 Max. 30 Max. 14 Forcing Yes • Variables Inputs, outputs • Number of variables Max. 10 Block status Yes Single step Yes Breakpoints 2 Diagnostic buffer Yes • Number of entries (not con

• Siemens Simatic S7-300, Technical data of CPU 31xC 6.3 CPU 313C CPU 31xC and CPU 31x, Technical data 6-12 Manual, Edition 08/2004, A5E00105475-05 Technical data can be used for • PG communication – Reserved (default) – Configurable Max. 7 1 from 1 to 7 • OP communication – Reserved (default) – Configurable Max. 7 1 from 1 to 7 • S7 basic communication – Reserved (default) – Configurable Max. 4 4 from 0 to 4 Routing No Interfaces 1st interface Type of interface Integrated RS485 interface Physics RS 485 electrically isolated No Interface power s

• Siemens Simatic S7-300, Technical data of CPU 31xC 6.5 CPU 314C-2 PtP and CPU 314C-2 DP CPU 31xC and CPU 31x, Technical data Manual, Edition 08/2004, A5E00105475-05 6-27 Technical data CPU 314C-2 PtP CPU 314C-2 DP Integrated functions Counters 4 channels (see the Manual Technological Functions ) Frequency counters 4 channels, max. 60 kHz (see the Manual Technological Functions ) Pulse outputs 4 channels for pulse width modulation, max. 2.5 kHz (see the Manual Technological Functions ) Controlled positioning 1 channel (see the Manual Technological Functions ) Integrated "Controlling" SFB PID controller (see the Manual Technological Functions ) Dimensions CPU

• Siemens Simatic S7-300, Technical data of CPU 31xC 6.6 Technical data of the integrated I/O CPU 31xC and CPU 31x, Technical data 6-32 Manual, Edition 08/2004, A5E00105475-05 CPU 313C/314C-2: Pin-out of the integrated AI/AO and DI (connector X11) 1 2 3 4 5 6 8 7 9 10 11 12 13 14 16 15 17 18 20 19 Standard Positioning AI (Ch0) AI (Ch1) AI (Ch2) AI (Ch3) PT 100 (Ch4) AO (Ch0) AO (Ch1) Control output 0 X11 PEWx+0 PEWx+2 PEWx+4 PEWx+6 PEWx+8 PAW x+0 PAW x+2 Standard DI 21 22 23 24 25 26 28 27 29 30 31 32 33 34 36 35 37 38 40 39 X X X X X X X X DI+2.1 DI+2.2 DI+2.3 DI+2.4 DI+2.5 DI+2.6 DI+2.7 DI+2.0 1) V I C V I C V I C V I C V A V A 4M M ANA Interrupt input X X X X X X X

• Siemens Simatic S7-300, Technical data of CPU 31x 7.2 CPU 312 CPU 31xC and CPU 31x, Technical data 7-6 Manual, Edition 08/2004, A5E00105475-05 Technical data Communication functions PG/OP communication Yes Global data communication Yes • Number of GD circuits 4 • Number of GD packets – Sending stations – Receiving stations Max. 4 Max. 4 Max. 4 • Length of GD packets – Consistent data max. 22 bytes 22 bytes S7 basic communication Yes • User data per request – Consistent data max. 76 bytes 76 bytes (for X_SEND or X_RCV) 64 bytes (for X_PUT or X_GET as the server) S7 communication • As server Yes • User data per request – Consiste

• Siemens Simatic S7-300, Communication 3.2 Communication services CPU 31xC and CPU 31x, Technical data Manual, Edition 08/2004, A5E00105475-05 3-9 3.2.6 Global data communication (MPI only) Properties Global data communication is used for cyclic exchange of global data via MPI subnets (for example, I, Q, M) between SIMATIC S7 CPUs (data exchange without acknowledgement). One CPU broadcasts its data to all other DP CPUs on the MPI subnet. This function is integrated in the CPU operating system. Reduction ratio The reduction ratio specifies the cyclic intervals for GD communication. You can set the reduction ra

• Table of contents CPU 31xC and CPU 31x, Technical data viii Manual, Edition 08/2004, A5E00105475-05 4 Memory concept ..................................................................................................................................... 4-1 4.1 Memory areas and retentivity................................................................................................

• Appendix A.1 Information about upgrading to a CPU 31xC or CPU 31x CPU 31xC and CPU 31x, Technical data Manual, Edition 08/2004, A5E00105475-05 A-5 A.1.4 Runtimes that change while the program is running Runtimes that change while the program is running If you have created a user program that has been fine-tuned in relation to certain processing tim

• Siemens Simatic S7-300, Cycle and reaction times 5.2 Cycle time CPU 31xC and CPU 31x, Technical data Manual, Edition 08/2004, A5E00105475-05 5-7 Operating system processing time at the scan cycle checkpoint The table below shows the operating system processing time at the scan cycle checkpoint of the CPUs. These times are calculated without taking into consideration times for: • Testing and commissioning routines, e.g. status/controlling of variables or block status functions • Transfer and deletion of blocks, compressing user program memory • Communication • Read/write access

• Siemens Simatic S7-300, Technical data of CPU 31x 7.4 CPU 315-2 DP CPU 31xC and CPU 31x, Technical data Manual, Edition 08/2004, A5E00105475-05 7-15 Technical data Number of function modules and communication processors you can operate • FM Max. 8 • CP (PtP) Max. 8 • CP (LAN) Max. 10 Time-of-day Real-time clock Yes (HW clock) • Buffered Yes • Buffered period Typically 6 weeks (at an ambient temperature of 104 °F) • Behavior of the clock on expiration of the buffered period The clock ke

• Siemens Simatic S7-300, Technical data of CPU 31xC 6.6 Technical data of the integrated I/O CPU 31xC and CPU 31x, Technical data 6-28 Manual, Edition 08/2004, A5E00105475-05 6.6 Technical data of the integrated I/O 6.6.1 Arrangement and usage of integrated I/Os Introduction Integrated I/Os of CPUs 31xC can be used for technological functions or as standard I/O. The figures below illustrate possible usage of I/Os integrated in the CPUs. Reference Further information on integrated I/O is found in the Manual Technical Functions . CPU 312C: Pin-out of the integrated DI/DO (connector X11) 1 2 3 4 5 6 8 7 9 10 11 12 13 14 16 15 17 18 20 19 Standard X11 DI DI

• Siemens Simatic S7-300, Technical data of CPU 31xC 6.3 CPU 313C CPU 31xC and CPU 31x, Technical data Manual, Edition 08/2004, A5E00105475-05 6-13 Technical data Integrated I/O • Default addresses of the integrated – Digital inputs – Digital outputs – Analog inputs – Analog outputs 124.0 to 126.7 124.0 to 125.7 752 to 761 752 to 755 Integrated functions Counters 3 channels (see the Manual Technological Functions ) Frequency counters 3 channels, max. 30 kHz (see the Manual Technological Functions ) Pulse outputs 3 channels for pulse widt

• Siemens Simatic S7-300, CPU 31xC and CPU 31x, Technical data Manual, Edition 08/2004, A5E00105475-05 5-1 Cycle and reaction times 5 5.1 Overview Overview This section contains detailed information about the following topics: • Cycle time • Reaction time • Interrupt response time • Sample calculations Reference: Cycle time You can view the cycle time of your user program on the PG. For further information, refer to the STEP 7 Online Help , or to the Configuring Hardware and Connections in STEP 7 Manual Reference: Execution time can be found in the S7-300 Instruction List for CPUs 31xC and 31x . This tabular list contains the execution times for all • STEP 7 instructio

• Glossary CPU 31xC and CPU 31x, Technical data Glossary-16 Manual, Edition 08/2004, A5E00105475-05 PROFINET IO Within the framework of PROFINET, PROFINET IO is a communication concept for the implementation of modular, distributed applications. PROFINET IO allows you to create automation solutions, which are familiar to you from PROFIBUS. That is, you have the sa

• Siemens Simatic S7-300, Operating and display elements 2.1 Operating and display elements: CPU 31xC CPU 31xC and CPU 31x, Technical data Manual, Edition 08/2004, A5E00105475-05 2-3 Mode selector switch Use the mode selector switch to set the CPU operating mode. Table 2-1 Positions of the mode selector switch Position Meaning Description RUN RUN mode The CPU executes the user program. STOP STOP mode The CPU does not execute a user program. MRES CPU memory reset Mode selector switch position with pushbutton function for CPU memory reset. A CPU memory reset by means of mode selector switch requires a specific sequence of operation. Reference • CPU operating modes: S

• Siemens Simatic S7-300, Technical data of CPU 31x 7.7 CPU 317-2 PN/DP CPU 31xC and CPU 31x, Technical data 7-36 Manual, Edition 08/2004, A5E00105475-05 Technical data • Number of variables – Of those as status variable – Of those as control variable 30 Max. 30 Max. 14 Forcing • Variables Inputs/Outputs • Number of variables Max. 10 Block status Yes Single step Yes Breakpoints 2 Diagnostic buffer Yes • Number of entries (not configurable) Max. 100 Communication functions Open IE communication via TCP/IP Yes (via integrated PROFINET interface and l

• Siemens Simatic S7-300, Technical data of CPU 31x 7.6 CPU 317-2 DP CPU 31xC and CPU 31x, Technical data 7-30 Manual, Edition 08/2004, A5E00105475-05 Technical data Number of connections 32 can be used for • PG communication – Reserved (default) – Configurable Max. 31 1 1 to 31 • OP communication – Reserved (default) – Configurable Max. 31 1 1 to 31 • S7-based communication – Reserved (default) – Configurable Max. 30 0 0 to 30 Routing Yes (max. 8) Interfaces 1st interface Type of interface Integrated RS485 interface Physics RS 485 electrically isolated Yes Interface power supply (15 to 30 VDC) max. 200 mA Functionality • MPI Y

• Technical data of CPU 31x 7.7 CPU 317-2 PN/DP CPU 31xC and CPU 31x, Technical data 7-40 Manual, Edition 08/2004, A5E00105475-05 Technical data Voltages and currents Power supply (rated value) 24 VDC • Permitted range 20.4 V to 28.8 V Current consumption (no-load operation) 100 mA Inrush current Typically 2.5 A I 2 t Min. 1 A 2 s Extern

• Glossary CPU 31xC and CPU 31x, Technical data Glossary-2 Manual, Edition 08/2004, A5E00105475-05 Backup memory Backup memory ensures buffering of the memory areas of a CPU without backup battery. It backs up a configurable number of timers, counters, flag bits, data bytes and retentive timers, counters, flag bits and data bytes). Bus A bus is a co

• Siemens Simatic S7-300, Preface Guide to the S7-300 documentation 1 Operating and display elements 2 Communication 3 Memory concept 4 Cycle and reaction times 5 Technical data of CPU 31xC 6 Technical data of CPU 31x 7 Appendix A SIMATIC S7-300 CPU 31xC and CPU 31x, Technical data Manual Edition 08/2004 A5E00105475-05 This manual is part of the documentation package with the order number: 6ES7398-8FA10-8BA0

• Glossary CPU 31xC and CPU 31x, Technical data Glossary-14 Manual, Edition 08/2004, A5E00105475-05 Process interrupt A process interrupt is triggered by interrupt-triggering modules as a result of a specific event in the process. The process interrupt is reported to the CPU. The assigned organization block will be processed according to interrupt priority. P

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