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S5-115U Manual
2.4
Central Processing Units
Four CPU types are available for the S5-115U. Tables 2-6 and 2-7 show the most important CPU
features.
Execution time per
- 1000 statements
(see Appendix A for specific
information)
Internal program
memory (RAM)
Total program memory,
maximum
Cycle monitoring time
Program scanning
Address range, maximum
(digital inputs)
Address range, maximum
(digital outputs)
Address range, maximum
(analog inputs)
Address range, maximum
(analog outputs)
Flags
Timers
Counters
Time range
Counting range
Operation set
*
Sum from the internal program memory and submodule
EWA 4NEB 811 6130-02b
Table 2-1. CPU Comparison
CPU 941
CPU 942
Approx.
Approx.
10 msec.
10 msec.
2 Kbytes
10 Kbytes
*
18 Kbytes
42 Kbytes
Default approx. 500 ms, programmable
Cyclic, interrupt-driven, time-controlled
Q 0.0 to Q 127.7
PW 128 to PW 254
PW 128 to PW 254
1024, optionally
128, optionally
128, optionally
Approx. 170 operations
Technical Description
CPU 943
Approx.
5 msec.
48 Kbytes
*
48 Kbytes
1024
I 0.0 to I 127.7
1024
64
64
•
all retentive
•
half retentive
•
all non-retentive
•
all retentive
•
half retentive
•
all non-retentive
•
all retentive
•
half retentive
•
all non-retentive
0.01 to 9990 s
0 to 999
CPU 944
Approx.
1.5 msec.
96 Kbytes
96 Kbytes
2-7
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