Siemens SIMATIC S7-300 Series Reference Manual page 151

New SFBs and SFCs in CPU 318-2
Function
Block
SFB 52
SFB 53
SFB 54
PLC S7-300, CPU Specifications CPU 312 IFM to CPU 318-2 DP
A5E00111190-01
CPU Function, depending on CPU and STEP 7 Version
Application
Fetching data records to a DP Slave
Fetching data records to a DP Slave
Receiving interrupts from a DP Slave
(not for I/O-dependent
OBs,MODE 1, OB1)
integrated DP interface,
(MODE 1, OB 40, 83, 86)
(OB 55 to OB 57, OB 82)
(central peripherals,
MODE 1, OB 40, OB 82)
Execution time See...
in ms
Initial call 221 Online help
Standard
Intermediate call 111
and
Final call 158
System
Initial call 284
functions
in STEP 7
Second call 110
Final call 110
90
170
176
140
4-9