Specifications

SIMATIC Instructions
9-32
S7-200 Programmable Controller System Manual
C79000-G7076-C233-01
Connecting the Input Wiring for the High-Speed Counters
Table 9-3 shows the inputs used for the clock, direction control, reset, and start
functions associated with the high-speed counters. These input functions and the
HSC modes of operation are described in Table 9-5 through Table 9-10.
Table 9-3 Dedicated Inputs for High-Speed Counters
High-Speed Counter
Inputs Used
HSC0 I0.0, I0.1, 0.2
HSC1 I0.6, I0.7, I1.0, I1.1
HSC2 I1.2, I1.3, I1.4, I1.5
HSC3 I0.1
HSC4 I0.3, I0.4, I0.5
HSC5 I0.4
There is some overlap in the input point assignments for some high-speed
counters and edge interrupts, as shown in the shaded area of Table 9-4. The same
input cannot be used for two different functions, however, any input not being used
by the present mode of its high-speed counter can be used for another purpose.
For example, if HSC0 is being used in mode 2 which uses I0.0 and I0.2, I0.1 can
be used for edge interrupts or for HSC3.
If a mode of HSC0 is used that does not use input I0.1, then this input is available
for use as either HSC3 or edge interrupts. Similarly, if I0.2 is not used in the
selected HSC0 mode, this input is available for edge interrupts; and if I0.4 is not
used in the selected HSC4 mode, this input is available for HSC5. Note that all
modes of HSC0 always use I0.0 and all modes of HSC4 always use I0.3, so these
points are never available for other uses when these counters are in use.