Specifications

SIMATIC Instructions
9-35
S7-200 Programmable Controller System Manual
C79000-G7076-C233-01
Table 9-8 HSC3 Modes of Operation
HSC3
Mode Description I0.1
0 Single phase up/down counter with internal direction control
SM137.3 = 0, count down
SM137.3 = 1, count up
Clock
Table 9-9 HSC4 Modes of Operation
HSC4
Mode Description I0.3 I0.4 I0.5
0 Single phase up/down counter with internal direction control
SM147 3 = 0 count down
Clock
1
SM147.3 = 0, count down
SM147.3 = 1, count up
Clock
Reset
3 Single phase up/down counter with external direction control
I0 4 = 0 count down
Clock
Dir.
4
I0.4 = 0, count down
I0.4 = 1, count up
Clock
Reset
6 Two phase counter with count up and count down clock inputs Clock
(U )
Clock
(D )
7
(Up) (Dn)
Reset
9 A/B phase quadrature counter,
phase A leads B b
y
90 de
g
rees for clockwise rotation,
Clock
Phase
A
Clock
Phase
B
10
hase
A
leads
B
by
90
degrees
for
clockwise
rotation
,
phase B leads A by 90 degrees for counterclockwise
rotation
A B
Reset
Table 9-10 HSC5 Modes of Operation
HSC5
Mode Description I0.4
0 Single phase up/down counter with internal direction control
SM157.3 = 0, count down
SM157.3 = 1, count up
Clock