Product overview
2.2 Hardware properties and firmware functions
CPU 1512C-1 PN (6ES7512-1CK01-0AB0)
34 Manual, 12/2017, A5E40898741-AA
Firmware functions of the digital on-board I/O module
Functions of the digital inputs
The digital inputs of the digital on-board I/O module have the following functions:
The high-speed digital inputs of the digital on-board
I/O module support technology functions such as fast
counting, measuring, position detection and pulse
generators (PWM, PTO and frequency output). Due
to the supported technology functions, the compact
CPUs are suitable for controlling pumps, fans, mixers,
conveyor belts, lifting platforms, gate control systems,
building management systems, synchronized axes,
Chapter Technology functions
(Page 42)
You have the option of reassigning parameters for the
digital on-board I/O module in RUN (for example,
values for input delay of individual channels can be
modified without affecting the other channels).
• Chapter Parameters of the digital
on-board I/O (Page 125)
• Chapter Parameter assignment
and structure of the parameter
data records of the digital on-
board I/O (Page 175)
Support of the value status
(Quality Information, QI)
Value status = 1 ("Good") indicates that the value of
the assigned input at the terminal is valid.
Value status = 0 ("Bad") indicates that no/too little
supply voltage L+ is applied at the terminal and that
the read value is therefore not valid.
Chapter Address space of the digital
on-board I/O (Page 116)
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