Blocks Used - Siemens Simatic S7-300 CP 341 User Manual

Programming Example for Standard Function Blocks

9.4 Blocks Used

9.4 Blocks Used
Blocks used
The table below shows the blocks used for the sample program.
Block
OB 1
OB 100
DB 21
DB 22
DB 40
DB 41
DB 42
DB 43
FB 7
FB 8
FC 5
FC 6
FC 14
FC 21
FC 22
208
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Symbol
CYCLE
RESTART
SEND IDB
RECV IDB
SEND WORK DB
RECV WORK DB
SEND SRC DB
RECV DST DB
P_RCV_RK
P_SND_RK
V24_STAT
V24_SET
V24_CYC
SEND
RECEIVE
CP 341 Point-to-Point Communication, Installation and Parameter Assignment
Description
Cyclic program processing
Cold restart processing
Instance DB for P_SND_RK FB
Instance DB for P_RCV_RK FB
Work DB for the standard FB 8
Work DB for the standard FB 7
Send data block
Receive data block
Standard FB for receiving data (RK 512)
Standard FB for sending data (RK 512)
Standard FC for reading CP outputs
Standard FC for writing to CP outputs
Control RS 232C secondary signals
Sending Data
receiving data
Manual, 09/2008, A5E02191071-01
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