Siemens Simatic S7-1500 User Manual

Technology functions
3.2 Pulse generators
CPU 1512C-1 PN (6ES7512-1CK00-0AB0)
Manual, 09/2016, A5E35306440-AB
51
Output signals for pulse width modulation (PWM) mode
Output signal
Meaning
Value range
Continuous pulse current at the digital
output PWM DQA
A pulse is output at the digital output PWM
DQA for the set on-load factor and cycle
duration.
Continuous pulse current
3.2.1.2
Operating mode: Frequency output
In this operating mode you can assign a frequency value with high frequencies more
precisely than by using period duration in PWM mode.
A rectangular signal with an assigned frequency and a constant on-load factor of 50 % is
generated at the digital output.
The frequency output mode has the following functions:
● When the option "High-speed output (0.1 A)" is activated, you can generate a minimum
pulse duration of 2 μs at a current of 100 mA. If the option "High-speed output (0.1 A)" is
not activated, you can generate a minimum pulse duration of 20 μs with a load > 0.1 A
and a minimum pulse duration of 40 μs with a load of ≥ 2 mA and a current of
maximum 0.5 A.
If you use a standard output, you can generate a minimum pulse duration of 100 µs with
a load of > 0.1 A and a minimum pulse duration of 200 µs with a load of ≥ 2 mA and a
current of max. 0.5 A.
Minimum
Maximum
Standard out-
put
High-speed
output deac-
tivated
High-speed
output activated
Standard out-
put
High-speed
output deac-
tivated
High-speed
output activated
Frequency
0.1 Hz
100 Hz
1)
10 kHz
1)
100 kHz
1)
Load dependent
● You can control the pulse output (DQA) of the channel manually via the control and
feedback interface.
● You can configure the reaction to CPU STOP. Upon change to CPU STOP, the pulse
output (DQA) is set to the configured state.

Siemens Simatic S7-1500 Specifications

General

Protection Class	IP20
Programming Language	LAD, FBD, STL, SCL, GRAPH
Communication Interfaces	PROFINET, PROFIBUS, Ethernet, OPC UA
Memory	Work memory and load memory (integrated or external memory card)
I/O Modules	Digital I/O, Analog I/O, Technology modules, Communication modules
Safety Integrated	Yes (with fail-safe CPUs and modules)
Redundancy	CPU redundancy possible with specific CPU types
Temperature Range	0°C to 60°C (horizontal installation)
Digital Inputs	Scalable through digital input modules
Digital Outputs	Scalable through digital output modules
Analog Inputs	Scalable through analog input modules
Analog Outputs	Scalable through analog output modules
Backplane	Integrated backplane for module connection
Real-time clock	Integrated real-time clock
CPU Type	Various models available (e.g., CPU 1511-1 PN, CPU 1513-1 PN, CPU 1515-2 PN, CPU 1517-3 PN, CPU 1518-4 PN/DP)

Summary

Legal Information

Warning Notice System

Details the system for notices regarding personal safety and property damage prevention.

Qualified Personnel

Defines the qualifications required for operating the product/system.

Proper Use of Siemens Products

Provides notes and warnings for the correct and safe operation of Siemens products.

Product Overview

New Functions in Firmware Version V2.0

Performance Segments of Compact CPUs

Security Integrated

Properties

Properties of the CPU Part

Properties of the Analog On-Board I/O

Describes the technical properties of the analog input/output modules.

Properties of the Digital On-Board I/O

Details the technical properties of the digital input/output modules.

Technology Functions

High-Speed Counters

Details the technical properties and functions of high-speed counters.

Pulse Generators

Operating Modes

Operating Mode: Pulse-Width Modulation (PWM)

Explains the properties and functions of PWM mode.

Operating Mode: Frequency Output

Details the properties and functions of the frequency output mode.

Operating Mode: PTO

Describes the PTO mode for outputting position information and controlling drives.

Terminal and Block Diagrams

Terminal and Block Diagram of the Analog On-Board I/O

Shows the block diagram and wiring options for the analog on-board I/O.

Terminal and Block Diagram of the Digital On-Board I/O

Illustrates the block diagram and wiring for the digital on-board I/O.

Parameters/Address Space

Address Space of the Analog On-Board I/O

Address Space of the Digital On-Board I/O

Address Space of the High-Speed Counters

Covers the input and output address space for high-speed counters.

Address Space of the Pulse Generators

Details the address space for PWM, frequency output, and PTO modes.

Interrupts and Diagnostics

Interrupts and Diagnostics of the CPU Part

Interrupts and Diagnostics of the Analog On-Board I/O

Details diagnostics interrupts generated by the analog on-board I/O.

Interrupts and Diagnostics of the Digital On-Board I/O

Explains diagnostics interrupts and error handling for digital on-board I/O.

Technical Specifications

Technical Specifications of the CPU 1512C-1 PN

Provides comprehensive technical data for the CPU 1512C-1 PN.

Parameter Data Records

Parameter Assignment and Structure of the Parameter Data Records of the Analog On-Board I/O

Explains parameter assignment and data record structure for analog I/O.

Structure of a Data Record for Input Channels of the Analog On-Board I/O

Structure of a Data Record for Output Channels of the Analog On-Board I/O

Parameter Data Records of the High-Speed Counters

Explains parameter data records for configuring high-speed counters.

Parameter Data Records (PWM)

Details parameter data records for configuring PWM mode.