Basics Of Program Execution; Events And Obs - Siemens SIMATIC ET 200SP System Manual

Basics of program execution

8.1

Events and OBs

Start events
The table below gives an overview of the possible event sources for start events and their
OBs.
Table 8- 1 Start events
Types of event sources
Starting
2)
Cyclic program
2)
Time-of-day interrupt
2)
Time-delay interrupt
2)
Cyclic interrupt
2)
Hardware interrupt
2)
Status interrupt
Update interrupt
Manufacturer-specific or
profile-specific interrupt
Synchronous cycle interrupt
Time error
3)
Cycle monitoring time ex-
ceeded once
Diagnostics interrupt
Pull/plug interrupt for mod-
ules
Rack error
MC-servo
4)
MC-PreServo
4)
MC-PostServo
4)
MC-Interpolator
4)
143
Possible priorities (default
priority)
1
1
2 to 24 (2)
2 to 24 (3)
2 to 24 (8 to 17, frequency
dependent)
2 to 26 (18)
2 to 24 (4)
2 to 24 (4)
2 to 24 (4)
16 to 26 (21)
22
2 to 26 (5)
2 to 26 (6)
2 to 26 (6)
17 to 26 (25)
17 to 26 (25)
17 to 26 (25)
16 to 26 (24)
Possible OB num- Default system
bers response
100, ≥ 123 Ignore
1, ≥ 123 Ignore
10 to 17, ≥ 123 Not applicable
20 to 23, ≥ 123 Not applicable
30 to 38, ≥ 123 Not applicable
40 to 47, ≥ 123 Ignore
55 Ignore
56 Ignore
57 Ignore
61 to 64, ≥ 123 Ignore
80 Ignore
STOP
82 Ignore
83 Ignore
86 Ignore
91 Not applicable
67 Not applicable
95 Not applicable
92 Not applicable
System Manual, 09/2019, A5E03576849-AJ
8
Number of OBs
1)
0 to 100
0 to 100
0 to 20
0 to 20
0 to 20
0 to 50
0 or 1
0 or 1
0 or 1
0 to 2
0 or 1
0 or 1
0 or 1
0 or 1
0 or 1
0 or 1
0 or 1
0 or 1
Distributed I/O system