Siemens SIMATIC S7-300 CPU Data: CPU 315-T-2 DP User Manual

Table of contents
6.1.4 Address areas of system memory ............................................................................................. 6-4
6.1.5 Properties of the Micro Memory Card (MMC)............................................................................ 6-7
6.1.6 Saving/retrieving whole projects to/from the Micro Memory Card ............................................. 6-8
6.2 Memory functions..................................................................................................................... 6-10
6.2.1 Downloading the user program................................................................................................ 6-10
6.2.2 Downloading a user program (enhanced handling)................................................................. 6-11
6.2.3 CPU memory reset and restart ................................................................................................ 6-12
6.3 Recipes .................................................................................................................................... 6-13
6.4 Measured value log files .......................................................................................................... 6-15
6.5 Technology data blocks ........................................................................................................... 6-17
6.6 Memory of the integrated technology of the CPU.................................................................... 6-17
7 Cycle and response times....................................................................................................................... 7-1
7.1 Overview .................................................................................................................................... 7-1
7.2 Cycle time................................................................................................................................... 7-2
7.2.1 Overview .................................................................................................................................... 7-2
7.2.2 Calculating the cycle time .......................................................................................................... 7-4
7.2.3 Different cycle times................................................................................................................... 7-5
7.2.4 Communication Load ................................................................................................................. 7-6
7.2.5 Cycle time extension as a result of testing and commissioning functions ................................. 7-8
7.3 Response time ........................................................................................................................... 7-8
7.3.1 Overview .................................................................................................................................... 7-8
7.3.2 Shortest response time ............................................................................................................ 7-10
7.3.3 Longest response time............................................................................................................. 7-11
7.3.4 Reducing the response time with direct I/O access................................................................. 7-13
7.4 Calculating method for calculating the cycle/response time.................................................... 7-13
7.5 Interrupt response time ............................................................................................................ 7-14
7.5.1 Overview .................................................................................................................................. 7-14
7.5.2 Reproducibility of Time-Delay and Watchdog Interrupts ......................................................... 7-16
7.6 Sample calculations ................................................................................................................. 7-16
7.6.1 Calculation example for the cycle time of the CPU 315T-2 DP ............................................... 7-16
7.6.2 Calculation example for the response time of the CPU 315T-2 DP ........................................ 7-17
7.6.3 Calculation example for the interrupt response time of the CPU 315T-2 DP .......................... 7-19
8 Technical data ........................................................................................................................................ 8-1
8.1 General technical data ............................................................................................................... 8-1
8.1.1 Dimension drawing..................................................................................................................... 8-1
8.1.2 Technical specifications of the Micro Memory Card (MMC) ...................................................... 8-2
8.1.3 Clock .......................................................................................................................................... 8-2
8.2 CPU 315T-2 DP ......................................................................................................................... 8-3
8.3 Integrated Inputs/Outputs for Technology.................................................................................. 8-9
8.3.1 Arrangement of integrated inputs/outputs for integrated technology......................................... 8-9
8.3.2 Technical specifications of digital inputs.................................................................................. 8-10
8.3.3 Technical specifications of digital outputs................................................................................ 8-12
9 Information for the Changeover to the Technology CPU......................................................................... 9-1
9.1 Scope ......................................................................................................................................... 9-1
9.2 Changed behavior of certain SFCs............................................................................................ 9-2
9.3 Interrupt events from distributed I/Os while the CPU status is in STOP.................................... 9-3
S7-300 CPU Data: CPU 315T-2 DP
iv Manual, 12/2005, A5E00427933-02

Siemens SIMATIC S7-300 CPU Data: CPU 315-T-2 DP Specifications

General

Programming Language	STEP 7
Power Supply	24 V DC
Number of DP masters	1
Processable Technology objects	Yes
Number of counters	256
Number of timers	256
S7 communication	Yes
Number of connections for S7 communication, max.	16
PG/OP communication	Yes
Global data communication	Yes
Integrated DP interface	Yes
Integrated PROFINET interface	No
SIMATIC Computing Platform	No
Operating Temperature	0 to 60 °C
Integrated Interfaces	MPI, DP
Communication	PROFIBUS DP
Cycle Time	0.1 ms
Engineering with	STEP 7
Backup available	Yes
Transmission rate, max.	12 Mbit/s