Siemens SIMATIC S7-200 System Manual page 172

S7-200 Programmable Controller System Manual
Table 6-50 shows all interrupt events, with their priority and assigned event number.
Table 6-49 Interrupt Queue Overflow Bits
Description (0 = No Overflow, 1 = Overflow)
Communications queue
I/O Interrupt queue
Timed Interrupt queue
Table 6-50 Priority Order for Interrupt Events
Event Description
8 Port 0
9 Port 0
23 Port 0
24 Port 1
25 Port 1
26 Port 1
19 PLS0
20 PLS1
0 I0.0
2 I0.1
4 I0.2
6 I0.3
1 I0.0
3 I0.1
5 I0.2
7 I0.3
12 HSC0
27 HSC0
28 HSC0
13 HSC1
14 HSC1
15 HSC1
16 HSC2
17 HSC2
18 HSC2
32 HSC3
29 HSC4
30 HSC4
31 HSC4
33 HSC5
10 Timed interrupt 0 SMB34
11 Timed interrupt 1 SMB35
21 Timer T32
22 Timer T96
158
Receive character
Transmit complete
Receive message complete
Receive message complete
Receive character
Transmit complete
PTO pulse count complete interrupt
PTO pulse count complete interrupt
Rising edge
Rising edge
Rising edge
Rising edge
Falling edge
Falling edge
Falling edge
Falling edge
CV=PV (current value = preset value)
Direction changed
External reset
CV=PV (current value = preset value)
Direction changed
External reset
CV=PV (current value = preset value)
Direction changed
External reset
CV=PV (current value = preset value)
CV=PV (current value = preset value)
Direction changed
External reset
CV=PV (current value = preset value)
CT=PT interrupt
CT=PT interrupt
SM Bit
SM4.0
SM4.1
SM4.2
Priority Group Priority in Group
Communications
Hi h Highest Priority t P i it
Discrete
M di Medium Priority P i it
Timed
Lowest Priority L t P i it
0
0
0
1
1
1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
0
1
2
3