Siemens SIMATIC S5-115U, User Manual

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