Technical data

Operation / processing CPU 922 CPU 928 CPU 928B
Interrupt-driven program processing
Extension of the cycle time by
inserting an empty OB 2
(without STEP 5 operations)
at an operation boundary 367
µs330 µs 492 µs
Response time
300
µs280 µs 297 µs
Time-driven program processing
Extension of the cycle time by
inserting an empty OB 13
(without STEP 5 operations)
at an operation boundary
375
µs
340
µs for the
first time
interrupt OB
180
µs for
each further
interrupt OB
due at the
same time
440
µs for the
first time
interrupt OB
200
µs for
each further
interrupt OB
due at the
same time
Clock pulse for calling the time-driven
program
(Time interrupt OB 10 to OB 18)
100 ms
10, 20, 50, 100,
200, 500 ms,
1, 2, 5 sec
10, 20, 50, 100,
200, 500 ms,
1, 2, 5 sec
Resolution times for clock-driven time
interrupt (OB 9) – – every minute,
every hour,
every day,
every month,
every year,
once
Resolution time for delay interrupt (OB 6)
––1 ms
Cycle time monitoring
default
selectable between
triggerable
150 ms
1 ... 4000 ms
yes
150 ms
1 ... 6000 ms
yes
150 ms
1 ... 13000 ms
yes
12
Appendix 1: Technical Data of the CPUs in the S5-135U
CPU 928B Programming Guide
C79000-A8576-C898-01
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