Interrupt Events In Priority Order - Siemens Simatic S7 Series System Manual

References
E.2 Interrupt events in priority order
E.2

Interrupt events in priority order

Table E- 2 Priority order for interrupt events
Priority group
Communications
Highest Priority
Discrete
Medium Priority
Timed
Lowest Priority
694
Event Description
8 Port 0 Receive character
9 Port 0 Transmit complete
23 Port 0 Receive message complete
24 Port 1 Receive message complete
25 Port 1 Receive character
26 Port 1 Transmit complete
19 PTO0 complete interrupt
20 PTO1 complete interrupt
34 PTO2 complete interrupt
0 I0.0 Rising edge
2 I0.1 Rising edge
4 I0.2 Rising edge
6 I0.3 Rising edge
35 I7.0 Rising edge (signal board)
37 I7.1 Rising edge (signal board)
1 I0.0 Falling edge
3 I0.1 Falling edge
5 I0.2 Falling edge
7 I0.3 Falling edge
36 I7.0 Falling edge (signal board)
38 I7.1 Falling edge (signal board)
12 HSC0 CV=PV (current value = preset value)
27 HSC0 Direction changed
28 HSC0 External reset
13 HSC1 CV=PV (current value = preset value)
16 HSC2 CV=PV (current value = preset value)
17 HSC2 Direction changed
18 HSC2 External reset
32 HSC3 CV=PV (current value = preset value)
10 Timed interrupt 0 SMB34
11 Timed interrupt 1 SMB35
21 Timer T32 CT=PT interrupt
22 Timer T96 CT=PT interrupt
System Manual, 09/2015, A5E03822230-AC
S7-200 SMART