Wiring
4.3 Terminal and block diagrams
CPU 1512C-1 PN (6ES7512-1CK00-0AB0)
Manual, 09/2016, A5E35306440-AB
95
Input addresses of the high-speed counters
You set the digital input addresses used by the high-speed counters (HSC) and the
assignment of A/B/N, DI0, DI1 and DQ1 signals in STEP 7 (TIA Portal). You can enable and
configure each HSC when you configure the compact CPU.
The compact CPU assigns the input addresses for the A/B/N signals automatically according
to the configuration.
You specify the input addresses for DI0 and DI1 according to the table Interconnection
overview of the inputs (Page 98). The interconnection produces a direct connection of the
HSC to an input of the on-board I/O. The high-speed counter then uses this input as
HSC DI0 or HSC DI1 ([DI] symbol). The [DI] symbols in the table identify the input addresses
for HSC DI0 and HSC DI1 that are offered for selection in the hardware configuration.
Assignment of HSC addresses of inputs
You can find an overview of the options for interconnecting the inputs of the front connectors
X11 and X12 in the section Interconnection overview of the inputs (Page 98).
Note
HSC compatibility mode
The displayed interc
onnection options in the section Interconnection overview of the inputs
98) assume that the "Front connector assignment like CPU 1511C" opti
on is disabled.
If the option is enabled, the input signals are interconnected the same way as for the
CPU
1511C-1 PN. In this case, the interconnection options of the CPU 1511C-1 PN manual
Digital outputs HSC-DQ0 and HSC-DQ1
Two digital outputs are available for each high-speed counter. Digital output HSC-DQ0 is a
logical output that cannot be interconnected with a digital output of the on-board I/O. Digital
output HSC-DQ0 can only be used via the user program. HSC-DQ1 is a physical output that
can be interconnected with a digital output of the on-board I/O.
The digital outputs are 24 V sourcing output switches relative to M and can be loaded with a
rated load current of 0.1 A. The outputs used as standard outputs have a rated load current
of 0.5 A. The digital outputs are protected against overload and short-circuit.
Note
It is possible to directly connect relays and contactors without external wiring. For information
on the maximum possible operating frequencies and the inductance values of th
e inductive
loads at the digital outputs, refer to the Technical specifications section.
The section Interconnection overview of outputs (Page 100) provides an overview of which
digital outputs you can interconnect to which high-speed counters. Digital outputs to which
no high-speed counter is interconnected can be used as standard outputs. The maximum
output delay of each digital output used as standard output is 500 µs.
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