Connecting The Input Wiring For The High-Speed Counters - Siemens SIMATIC S7-200 System Manual

SIMATIC Instructions

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
HSC0
HSC1
HSC2
HSC3
HSC4
HSC5
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.
9-32
Inputs Used
I0.0, I0.1, 0.2
I0.6, I0.7, I1.0, I1.1
I1.2, I1.3, I1.4, I1.5
I0.1
I0.3, I0.4, I0.5
I0.4
S7-200 Programmable Controller System Manual
A5E00066097-02