Performance; Timers, Counters And Code Blocks Supported; A.2.2.2 Performance - Siemens SIMATIC S7 Functional Safety Manual

A.2.2.2

Performance

Table A- 11 Performance
Type of instruction
Boolean
Move Word
Real math
A.2.2.3

Timers, counters and code blocks supported

Table A- 12 Blocks, timers and counters supported by CPU 1214FC
Element
Blocks Type
Size
Quantity
Address range for FBs, FCs,
and DBs
Nesting depth
Monitoring
OBs Program cycle
Startup
Time-delay interrupts
Cyclic interrupts
Hardware interrupts
Time error interrupts
Diagnostic error interrupts
Pull or plug of modules
Rack or station failure
Time of day
Status
Update
Profile
Timers Type
Quantity
Storage
Counters Type
Quantity
S7-1200 Functional Safety Manual
Manual, 02/2015, A5E03470344-AA
Execution speed
0.08 μs/instruction
1.7 μs/instruction
2.3 μs/instruction
Description
OB, FB, FC, DB
64 Kbytes
Up to 1024 blocks total (OBs + FBs + FCs + DBs)
FB and FC: 1 to 65535 (such as FB 1 to FB 65535)
DB: 1 to 59999
16 from the program cycle or startup OB
6 from any interrupt event OB
Status of 2 code blocks can be monitored simultaneously
Multiple
Multiple
4 (1 per event)
4 (1 per event)
50 (1 per event)
1
1
1
1
Multiple
1
1
1
IEC
Limited only by memory size
Structure in DB, 16 bytes per timer
IEC
Limited only by memory size
Technical specifications
A.2 Fail-Safe CPU technical specifications
151