The document provides an overview of the Simatic S7-1500, an advanced PLC known for its high performance and flexibility in both standard and failsafe configurations. It discusses its capabilities, including integrated displays for diagnostics, module expansion, and software compatibility with TIA Portal. Additionally, it outlines the advantages of PLCs over traditional hard-wired control systems and touches on the binary number system used in PLC operation.

1. What is SIMATIC S7-1500?
• It is an advanced PLC in the SIMATIC s7 family. This PLC provides a fast response and the highest system performance
and the CPU is available in standard and failsafe versions. Using the SIMATIC S7-1500 controller gives you top
performance and built-in viability into the future. You can turn the most sophisticated machine designs, which provides
reliable assistance as you work your way through the digital transformation
• SIMATIC S7-1500 execute the user program and network the controller with other automation components
• S7-1500 fail-safe CPU used for safety application of machines and plants
• The scope ranges from standard and fail-safe CPU for small to mid-size requirements offering compact size design with
integrated inputs and outputs
• S7-1500 has an inbuilt display and keypad that allows for configuration and diagnostics faults and errors it will show in
the display and can change the IP addresses in the display itself without the need of external system, for security
purposes password changing is done in the display itself
• It can expand the modules up to 32
• Standard CPU range from CPU1511-1PN for small and for medium size application 1518-4PN/DP, CPU range depends
upon the application, communication, processing speed of plant or industries
• It can be used for high-speed applications such as assembly lines
• Redundant CPUs is synchronized via PROFINET

2. What is SIMATIC S7-1500?
• What software and communication are used in s7-1500?
• TIA PORTAL V13, V14 and V15
• We can migrate the project from step 7 software to TIA PORTAL
software
• Industrial Ethernet(RJ-45) PROFINET, PROFIBUS

3. Definition
• A programmable logic controller (PLC), also referred to as a programmable controller, is a type of
computer commonly used in commercial and industrial control applications.
• PLCs differ from office computers in the types of tasks they perform and the hardware and software
they require to perform these tasks. While the specific applications vary widely, all PLCs monitor
inputs and other variable values, make decisions based on a stored program, and control outputs to
automate a machine or process.
• There are many types of PLCs, and they vary significantly in appearance and capabilities.
Therefore, to keep this course simple, the examples used focus primarily on Siemens SIMATIC S7-
1200 basic controllers.
• Although S7˗1200 PLCs offer basic automation solutions, they also have many advanced features,
and learning about S7-1200 PLCs will help you gain a good understanding of PLC capabilities.

5. Basic PLC Operation
• The basic components of a PLC include input signal modules, a central processing unit (CPU),
output signal modules, and a programming device. The types of input and output signal modules
used by a PLC depend upon the types of input and output devices used.
• Input signal modules convert the signals provided by input devices into logic signals that can be
used by the CPU.
• The CPU uses the values of inputs, outputs, and other variables as it executes the user program
stored in its memory. The CPU then sends signals to update the statuses of outputs.
• Output signal modules convert signals from the CPU into digital or analog signals that can be used
to control output devices.
• The programming device is used to enter or change the PLC’s program and to monitor or change
stored values. Once entered, the program and associated variables are stored in the CPU.
• A control system may also incorporate one or more human machine interfaces (HMIs) to monitor
and control a machine or process. HMIs are not PLC components, but work closely with the PLC.

7. Simple Example

8. Simple Example
• In this simple example, pushbuttons connected to PLC inputs are used to start and stop a motor
connected to PLC output through a motor starter.
• No programming device is shown in this example because, once the PLC has been programmed,
the PLC can perform its control tasks without the programming device.
• Similarly, an HMI is not shown, because this is a simple control example. However, additional
outputs from the PLC may control indicator lights that show whether the motor is stopped or running
or indicate a fault, such as a motor overload.

9. Hard-Wired Control
• Prior to PLCs, control tasks were often performed by contactors, control relays, and other
electromechanical devices with intricate interconnecting wires. This approach is often referred to as
hard-wired control.
• Although hard-wired control solutions are capable of performing some of the same tasks as PLCs,
hard-wired control is generally more difficult to design, install, and maintain. In addition, the process
of making even simple modifications to a hard-wired control solution can be difficult because the
logic of the control system is determined by the interconnection of control wires and components.

10. Advantages of PLCs
• Some of the advantages of PLCs when compared to hardwired solutions are as follows:
• PLCs can perform more complex control tasks
• PLCs can communicate with other systems
• PLC systems are more reliable
• PLC systems can be more easily and more effectively documented
• PLC systems are easier to operate and maintain
• PLC system changes are easer to implement
• PLC applications can be duplicated faster and less expensively

11. SIMATIC Products
• Siemens SIMATIC products are the foundation upon which our Totally Integrated Automation (TIA)
concept is based. Because the needs of end users and machine builders vary widely, the SIMATIC
family includes a wide range of controllers, human machine interfaces (HMIs), and related products.
For example, SIMATIC PLCs are available as conventional modular controllers, embedded
automation products, and as PC-based controllers.
• Modular SIMATIC S7 PLCs are optimized for control tasks and can be adapted to meet application
requirements using plug-in modules for input/output (I/O), special functions, and communications.
Examples of products in this category include: S7-1200 basic controllers, ET 200SP distributed
controllers, and S7-1500 advanced controllers. The focus of this course is on S7-1200 basic
controllers.

12. Binary Number System
• Because a PLC is a computer, it stores information in the form of on and off conditions represented
by ones and zeros, referred to as bits. Sometimes bits are used individually and sometimes they are
used to represent numerical values. Understanding how these bits can be used to represent
numerical values requires an understanding of the binary number system.
• The binary system has a base of 2 and uses only two characters, 1 and 0. Each bit is associated
with a power of 2 based on its position in the number. The further to the left, the higher the power of
2. The number in the far left-hand position is referred to as the most significant bit or MSB, and the
number in the far right-hand position is referred to as the least significant bit or LSB. A 1 is placed in
a position if that power of 2 is used in the number. Otherwise, a 0 is placed in a position. The
accompanying graphic shows an 8-bit binary number, but the number of bits used varies.

14. Converting from Binary to Decimal
• The process of converting a binary number to an equal decimal value is as simple as adding the
equivalent decimal value for each position in the binary number where a 1 is shown. Positions with
a 0 do not add to the number value.