VIPA CP 240 RS232, Manual

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Manual VIPA System 200V Chapter 3 Project engineering
HB97E - CP - Rev. 11/30 3-5
For the communication between CPU and CP 240 shown in the text below,
the following handling blocks are used:
FC 0 SEND Data output CPU to CP 240
FC 1 RECEIVE Receive data from CP 240
FC 9 SYNCHRON_RESET Synchronization between CPU and CP 240
The handling blocks are available as library and may be integrated into the
Siemens SIMATIC Manager like shown above.
A more detailed description of the handling blocks is to be found on the
following pages.
Your PLC program should be build-up with the following structure:
OB1:
CALL FC 9
//Call Synchron
ADR :=0 //1st DW in SEND/EMPF_DB
TIMER_NR :=T2 //Delay time Synchron
ANL :=M3.0 //Start-up running
NULL :=M3.1 //Interim flag
RESET :=M3.2 //Execute module reset
STEUERB_S :=MB2 //Control bits Send_FC
STEUERB_R :=MB1 //Control bits Receive_FC
U M 3.0 //as long as no start-up no
//SEND/RECEIVE processing
BEB
CALL FC 1
//Receive data
ADR :=0 //1st DW in SEND/RECEIVE_DB
_DB :=DB11 //Receive_DB telegram
ABD :=W#16#14 //1st DW receive buffer (DW20)
ANZ :=MW10 //Amount of received data
EMFR :=M1.0 //Reception ready
PAFE :=MB12 //Error byte
GEEM :=MW100 //Internal data
ANZ_INT :=MW102 //Internal data
empf_laeuft :=M1.1 //Internal data
letzter_block:=M1.2 //Internal data
fehl_empf :=M1.3 //Internal data
U M 1.0 //Reception ready
R M 1.0 //delete reception ready
CALL FC 0 //Send data
ADR :=0 //1st DW in SEND/RECEIVE_DB
_DB :=DB10 //Send_DB telegram
ABD :=W#16#14 //1st DW send buffer (DW20)
ANZ :=MW14 //Amount of data to send
FRG :=M2.0 //Set send ready
PAFE :=MB16 //Error byte
GESE :=MW104 //Internal data
ANZ_INT :=MW106 //Internal data
ende_kom :=M2.1 //Internal data
letzter_block:=M2.2 //Internal data
senden_laeuft:=M2.3 //Internal data
fehler_kom :=M2.4 //Internal data
OB100:
UN M 3.0
S M 3.0
//Start-up CPU running
PLC program