
Program instructions
7.1 Bit logic
S7-200 SMART
System Manual, V2.3, 07/2017, A5E03822230-AF
175
As shown in the following figure, the CPU uses a logic stack to resolve the control logic. In
these examples, "iv0" to "iv31" identify the initial values of the logic stack, "nv" identifies a
new value provided by the instruction, and "S0" identifies the calculated value that is stored
in the logic stack.
1
The value is unknown (it could be either a 0 or a 1).
2
After the execution of a Logic push or a Load stack instruction, value iv31 is lost.
Содержание SIMATIC S7-200
Страница 30: ...Product overview 1 7 Programming software S7 200 SMART 30 System Manual V2 3 07 2017 A5E03822230 AF ...
Страница 267: ...Program instructions 7 6 Counters S7 200 SMART System Manual V2 3 07 2017 A5E03822230 AF 267 HSC modes 3 and 4 ...
Страница 394: ...Program instructions 7 18 Subroutine S7 200 SMART 394 System Manual V2 3 07 2017 A5E03822230 AF ...
Страница 425: ...Communication 8 5 PROFIBUS S7 200 SMART System Manual V2 3 07 2017 A5E03822230 AF 425 ...
Страница 786: ...Technical specifications A 11 S7 200 SMART cables S7 200 SMART 786 System Manual V2 3 07 2017 A5E03822230 AF ...
Страница 798: ...Error codes C 4 PLC fatal error codes S7 200 SMART 798 System Manual V2 3 07 2017 A5E03822230 AF ...
Страница 848: ...Ordering information F 6 Human Machine Interface devices S7 200 SMART 848 System Manual V2 3 07 2017 A5E03822230 AF ...