Siemens Simatic S7-1500 User Manual

Technology functions
3.2 Pulse generators
CPU 1512C-1 PN (6ES7512-1CK00-0AB0)
Manual, 09/2016, A5E35306440-AB
55
3.2.1.3
Operating mode: PTO
The PTO (Pulse Train Output) mode can be used to output position information. This allows
you to, for example, control stepper motor drives or simulate an incremental encoder. The
frequency of the pulses represents the speed, while the number of pulses represents the
distance. The direction can also be specified by using two signals per channel. You can use
a PTO channel for setpoint output (drive) for an axis technology object.
PTO mode is divided into the following four signal types:
● PTO (pulse (A) and direction (B)): If you select the PTO signal type (pulse (A) and
direction (B)), an output (A) controls the pulses and an output (B) controls the direction. B
is 'High' (active) when pulses are generated in a negative direction. B is 'Low' (inactive)
when pulses are generated in a positive direction.
①
Positive direction of rotation
②
Negative direction of rotation
● PTO (Count Up (A) and Count Down (B)): When you select PTO when you select the
PTO signal type (count up (A) and count down (B)), an output (A) outputs pulses for
positive directions and another output (B) outputs pulses for negative directions.
①
Positive direction of rotation
②
Negative direction of rotation

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)