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