Technical data

Table Of Contents
System Software for S7-300/400 System and Standard Functions - Volume 1/2
A5E00709327-01
ix
Contents
1
Organization Blocks 1-3
1.1
Overview of the Organization Blocks (OBs) ..................................................... 1-3
1.2
Program Cycle Organization Block (OB1)........................................................ 1-3
1.3
Time-of-Day Interrupt Organization Blocks (OB10 to OB17) ........................... 1-3
1.4
Time-Delay Interrupt Organization Blocks (OB20 to OB23)............................. 1-3
1.5
Cyclic Interrupt Organization Blocks (OB30 to OB38)...................................... 1-3
1.6
Hardware Interrupt Organization Blocks (OB40 to OB47)................................ 1-3
1.7
Status Interrupt OB (OB 55) ............................................................................. 1-3
1.8
Update Interrupt OB (OB 56)............................................................................ 1-3
1.9
Manufacturer Specific Interrupt OB (OB57)...................................................... 1-3
1.10
Multicomputing Interrupt Organization Block (OB60)....................................... 1-3
1.11
Synchronous Cycle Interrupt OBs (OB 61 to OB 64) ....................................... 1-3
1.12
Technology Synchronization Interrupt OB (OB 65) .......................................... 1-3
1.13
I/O Redundancy Error OB (OB70).................................................................... 1-3
1.14
CPU Redundancy Error OB (OB72)................................................................. 1-3
1.15
Communication Redundancy Error OB (OB73) ............................................... 1-3
1.16
Time Error Organization Block (OB80)............................................................. 1-3
1.17
Power Supply Error Organization Block (OB81) .............................................. 1-3
1.18
Diagnostic Interrupt Organization Block (OB82) .............................................. 1-3
1.19
Insert / Remove Module Interrupt Organization Block (OB83)......................... 1-3
1.20
CPU Hardware Fault Organization Block (OB84) ............................................ 1-3
1.21
Priority Class Error Organization Block (OB85) ............................................... 1-3
1.22
Rack Failure Organization Block (OB86).......................................................... 1-3
1.23
Communication Error Organization Block (OB87)............................................ 1-3
1.24
Processing Interrupt OB (OB 88)...................................................................... 1-3
1.25
Background Organization Block (OB90)........................................................... 1-3
1.26
Startup Organization Blocks (OB100, OB101 and OB102).............................. 1-3
1.27
Programming Error Organization Block (OB121) ............................................. 1-3
1.28
I/O Access Error Organization Block (OB122) ................................................. 1-3
2
Common Parameters for SFCs 2-3
2.1
Evaluating Errors with Output Parameter RET_VAL........................................ 2-3
2.2
Meaning of the Parameters REQ, RET_VAL and BUSY with Asynchronous
SFCs................................................................................................................. 2-3
3
Copy and Block Functions 3-3
3.1
Copying Memory Area with SFC 20 "BLKMOV"............................................... 3-3
3.2
Uninterruptible Copying of Variables with SFC 81 "UBLKMOV"...................... 3-3
3.3
Initializing a Memory Area with SFC 21 "FILL"................................................. 3-3
3.4
Creating a Data Block with SFC 22 "CREAT_DB"........................................... 3-3
3.5
Deleting a Data Block with SFC 23 "DEL_DB"................................................. 3-3